WO2021074704A1 - Universal grip for handles - Google Patents

Universal grip for handles Download PDF

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Publication number
WO2021074704A1
WO2021074704A1 PCT/IB2020/055216 IB2020055216W WO2021074704A1 WO 2021074704 A1 WO2021074704 A1 WO 2021074704A1 IB 2020055216 W IB2020055216 W IB 2020055216W WO 2021074704 A1 WO2021074704 A1 WO 2021074704A1
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WO
WIPO (PCT)
Prior art keywords
section
grip
hand
hand grip
universal
Prior art date
Application number
PCT/IB2020/055216
Other languages
French (fr)
Inventor
Sudhir Maan
Original Assignee
Maan, Amrita
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maan, Amrita filed Critical Maan, Amrita
Publication of WO2021074704A1 publication Critical patent/WO2021074704A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
    • A63B60/06—Handles
    • A63B60/14—Coverings specially adapted for handles, e.g. sleeves or ribbons
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J45/00—Devices for fastening or gripping kitchen utensils or crockery
    • A47J45/06—Handles for hollow-ware articles
    • A47J45/067—Handles for coffee pots or the like
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B49/00—Stringed rackets, e.g. for tennis
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00—Golf clubs
    • A63B53/14—Handles
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B59/00—Bats, rackets, or the like, not covered by groups A63B49/00 - A63B57/00
    • A63B59/50—Substantially rod-shaped bats for hitting a ball in the air, e.g. for baseball
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
    • A63B60/06—Handles
    • A63B60/12—Handles contoured according to the anatomy of the user's hand
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions
    • B25G1/10—Handle constructions characterised by material or shape
    • B25G1/102—Handle constructions characterised by material or shape the shape being specially adapted to facilitate handling or improve grip
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B5/00—Brush bodies; Handles integral with brushware
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2102/00—Application of clubs, bats, rackets or the like to the sporting activity ; particular sports involving the use of balls and clubs, bats, rackets, or the like
    • A63B2102/04—Badminton
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2102/00—Application of clubs, bats, rackets or the like to the sporting activity ; particular sports involving the use of balls and clubs, bats, rackets, or the like
    • A63B2102/20—Cricket
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2102/00—Application of clubs, bats, rackets or the like to the sporting activity ; particular sports involving the use of balls and clubs, bats, rackets, or the like
    • A63B2102/32—Golf
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2209/00—Characteristics of used materials

Definitions

  • the present invention relates to a universal grip employed as a single hand or double hand ergonomic grip to reduce the body effort of the user. More particularly, the present invention relates to a universal hand grip with a predefined degree taper/angle as per devised formula to improve the performance of the user.
  • the universal hand grip has an arc, angle and a V shape protrusion for improving the grip and performance of the user and for controlling the centripetal and centrifugal force at the same time.
  • Handles have generic use in a variety of applications such as sports equipment like cricket bats, golf clubs, badminton rackets etc., domestic equipment like toothbrushes etc., industrial tools like hammers, screw drivers, puckers etc., stationary equipment like pens, pencil, paint brushes etc., medical equipment’s, physiotherapy etc., and many other diverse applications like household items like jug, cups, spoon utensils.
  • the successful usage of sports equipment and industrial tools is dependent upon the ability of a user to hold the equipment or tool in an optimum position by hand and achieve its movement solely based on the movement of users’ hands.
  • Firmness of the hold on an equipment or tool is dependent on the friction between palm of a hand and the surface of grip. It is a known fact that friction is dependent upon the following:
  • Conventional grips such as grips for golf clubs, have outwards taper. Such grips force body of a sportsperson to over swing in order to arrive at the result, for example, connecting with a golf ball. Importantly, over swinging of a golf club leads to mental stress, which results in fatigue and ultimately an unknown confused state of mind of the user with unsolved questions.
  • US3837647 discloses a golf club hand grip formed of a tubular sleeve of substantially circular cross-section surrounding the free end of the golf club shank, with the grip being formed in an elongated, truncated conical shape whose larger base is at the sleeve end closest to the club head end of the shank and whose smaller base is adjacent the free end of the shank, so that the outer surface of the grip is gradually tapered along a straight line taper whose smaller diameter is adjacent the free end of the club, for the full length of the grip, with the grip smaller diameter end terminating in an integral, enlarged diameter knob-like portion.
  • the main drawback of the invention is that the arc provided in the golf club hand grip is not smooth and the golf club is imbalanced due to the imbalance of the steep of the grip. Moreover, the edges shown in the invention is aggressive and not user-friendly.
  • US2131966 discloses a golf club handle having a gripping portion of a length adapted to accommodate the two hands of the player. Said gripping portion having a point of larger cross-section intermediate its handle, the upper portion of the grip tapering towards the top of the club so as to have its smallest cross-section adjacent the top of the club and the lower portion of the grip tapering toward the head end of the club. Said upper portion of such cross-sectional size is such that it may be substantially enveloped by the little, ring and middle fingers.
  • the main drawback of the invention is that the grip mentioned in the invention is confined to the golf players.
  • US6890265B2 discloses a reverse taper grip for attachment to an elongated golf club shaft or other similar handle or the like is provided, the grip being formed of resilient synthetic resin material and presenting an outer gripping surface of reverse taper design along at least a portion of the grip.
  • the grip presents a moderate reverse taper angle with the ratio of the greater thickness end to the smaller thickness end being from about 1.1- 1.7.
  • the main drawback of the invention is that the taper grip has no stopper or stop end to control the speed of the grip and it is confined to golf players.
  • Designing handles for sports goods like golf sticks and cricket bat represent two problems.
  • One of the problem is the centrifugal force which is experienced when swung and the other is the need to hold it in an ergonomically convenient way in order to apply force.
  • Conventional handles mostly solve only one of these two problems. Usually the wider outward of the handle, curbs only the centrifugal force. A few designs narrow outwards to provide ergonomic convenience but let the centrifugal force work freely.
  • the main object of the present invention is to provide a universal hand grip with a predefined calculated degree taper to improve the performance of the user.
  • Another object of the present invention is to provide a universal hand grip that does not allow the body of the user to lose control at any time of usage.
  • Yet another object of the present invention is to provide a calculated formula rate of taper/angle and a gradient reversal that curbs the centrifugal force without any ergonomic inconvenience.
  • Still another object of the present invention is to provide a universal hand grip having a first section, a second section and a third section either attached together to form a single continuous body or made continuous as a single body.
  • the present invention provides a universal hand grip with a predefined degree taper to improve the performance of the user.
  • the universal grip employed as a single hand or double hand grip is used for various applications.
  • the present invention provides a universal hand grip comprising a first section having an open end and a posterior end; a second section having an anterior end and a posterior end; a third section having an anterior end and a posterior end; the posterior end of the third section is extended to form a stopper end; the anterior end of the second section is connected to the posterior end of the first section and the posterior end of the second section is connected to the anterior end of the third section thus forming the hand grip; the first section is hollow to accommodate shaft of an equipment that extends inside the hand grip; the second section has its outer surface with a predefined degree taper emerging from the anterior side to the posterior side; the diameter of the stopper end is equal to the diameter of the anterior end of the second section; the length between posterior end and the anterior end of the third section is equal to the diameter of the anterior end of the third section; the diameter of the anterior end of the second section is equal to the diameter of the posterior end of the first section and the diameter of the posterior end of the second section is equal to the diameter of the anterior end of the anterior end of the first
  • the present invention provides a universal hand grip having a cross-section of a shape including but not limited to circular, rectangular, truncated square pyramidal structure, truncated rectangular pyramidal structure, brick taper, oval, egg shape.
  • the three sections are attached either by a joining method such as but not limited to gluing, welding or made continuous as a single body.
  • the equipments include but are not limited to single hand equipment such as but not limited to polo, all racket games like badminton, lawn tennis, table tennis, snooker, billiards etc.; two hand equipments such as but not limited to golf, cricket, hockey, etc.; three finger holding equipments such as but not limited to pen, paint brush, toothbrush etc; medical equipments such as walker, dental handpiece etc.; industrial tools such as hammer, screwdriver etc. and household items such as jug, cleaning brushes etc.
  • the first section is preferably conical in shape.
  • the predefined degree taper is calculated as taper increase in total grip length which is directly proportional to the length of the grip and taper increase in length of grip per mm.
  • the diameter of the hand grip is subject to change based on age, size of the hand and region to which the user belongs. Further, the diameter of handgrip is subject to change based on weight of the equipment to which it is connected.
  • the hand grip is optionally covered with a sleeve made of a material including but not limited to synthetic fibers, rubber, PVC, leather, wood etc.
  • the universal grip is operated by any human being irrespective of their age, profession etc. and is beneficial for sportspersons, industrial workers and users working in a plurality of occupations and is also useful in household items.
  • the universal hand grip allows one hand or both the hands to be freely turned or twisted in any desired direction without any error to perform different tasks.
  • the present invention provides a universal hand grip comprising a first section, a second section having an anterior end and a posterior end and a third section having an anterior end and a posterior end.
  • the posterior end of the third section is extended to form a stopper end.
  • the anterior end of the second section is connected to the posterior end of the first section and the posterior end of the second section is connected to the anterior end of the third section thus forming a single body.
  • the sections are attached either by joining methods or made continuous as a single body of the hand grip.
  • the second section has its outer surface with a predefined degree taper emerging from the anterior side to the posterior side.
  • the universal grip has an arc between the anterior end and the posterior end of the third section.
  • the diameter of the stopper end is equal to the length between the anterior end and the posterior end of the third section.
  • the universal grip has a V-shape protrusion on the second section.
  • the V-shape protrusion is either half V shape starting from anterior end of the second section and ending at half the length of the second section or full V shape starting from anterior end of the second section and ending at posterior end of the second section.
  • the V-shape protrusion controls the face of the equipment.
  • the present invention provides a universal hand grip comprising a first section having an open end and a posterior end, a second section having an anterior end and a posterior end and a third section having an anterior end and a posterior end.
  • the posterior end of the third section is extended to form a stopper end.
  • the anterior end of the second section is connected to the posterior end of the first section and the posterior end of the second section is connected to the anterior end of the third section thus forming a single body.
  • the sections are attached either by joining methods or made continuous as a single body of the hand grip.
  • the second section has its outer surface with a predefined degree taper emerging from the anterior side to the posterior side.
  • the universal grip has an angle between the anterior end and the posterior end of the third section.
  • the angle at the third section moves hand in an angle according to the user’s needs.
  • the diameter of the stopper end is equal to the diameter of the posterior end of the third section.
  • the universal grip has a V-shape protrusion on the second section.
  • the V-shape protrusion is either half V shape starting from anterior end of the second section and ending at half the length of the second section or full V shape starting from anterior end of the second section and ending at posterior end of the second section.
  • the V-shape protrusion controls the face of the equipment.
  • the universal hand grip transfers the force from the hand to said grip starting from little finger to the index finger through ring finger and middle finger of hand of the user.
  • the universal hand grip allows all the fingers to participate and perform in order/ sequence according to the structure of fingers.
  • the sequel balance combination of fingers further connects with other structural and muscles of the body that leads to easy free flow of energy in the body.
  • the universal grip ensures that the user gets hold on the circumference of the grip and the user utilizes the strength of all the fingers and the hand.
  • Fig. 1(c) represents a table of degree of predefined degree taper including palm of user.
  • Fig. 1(d) represents a table of degree of predefined taper including highest middle finger ratio of user.
  • Fig. 1(e) represents a table of performance analysis of conventional grip.
  • Fig. 1(f) represents a table of performance analysis of universal grip.
  • Fig. 2(a) to 2(c) illustrates a perspective view and front view of the universal hand grip for cricket bat in accordance to an embodiment of the present invention.
  • Fig. 3(a) and Fig. 3(b) illustrates a cross sectional view of conventional hand grip and the universal hand grip in accordance to an embodiment of the present invention.
  • Fig. 4 shows a front view of the universal hand grip for badminton racquet in accordance to an embodiment of the present invention.
  • Fig. 5 shows a front view of the universal grip for the golf stick in accordance to an embodiment of the present invention.
  • Fig. 6 shows a front view of the universal grip for the hand tool hammer in accordance to an embodiment of the present invention.
  • Fig. 7 shows a front view of the universal grip for the tooth brush in accordance to an embodiment of the present invention.
  • Fig. 8 shows a front view of the universal grip for the pen in accordance to an embodiment of the present invention.
  • Fig. 9 shows a front view of the universal grip for the Jug in accordance to an embodiment of the present invention.
  • Fig. 10 shows a front view of the universal grip for the bike in accordance to an embodiment of the present invention.
  • the present invention provides a universal hand grip to increase the performance of the user.
  • the universal hand grip allows the user to move, twist, turn, rotate easily and reduce the body effort of the user at the time of usage.
  • the universal hand grip ensures an increase in performance of a user to about double in terms of performance and results obtained as compared to conventional grips.
  • the universal hand grip ensures a perfect connection with nervous system that further activates the sense of using maximum strength of hands/fmgers and body. A user’s body never loses control at any time of usage of the universal hand grip.
  • the universal hand grip ensures that a perfect balance of body and strength is created at the time of holding the grip.
  • the universal hand grip also ensures that a perfect balance is created between upper body and lower body of the user.
  • Said grip ensures that hands of the user act as socket to the external object and the user makes a circle/arc or any angle at any degree while operating the universal grip.
  • the universal hand grip ensures that the wrist of the user is strong at the time of usage and ensures that the body effort by the user is substantially reduced and the body posture of the user is correct.
  • Said grip directly connects to the core muscles of the user and ensures that hand(s) of a user are stress free at the time of usage.
  • Said grip ensures that no additional/undesired pressure is applied on any finger at the time of usage and ensures that a balanced energy flow (blood circulation) in fingers is maintained during use.
  • the present invention is also based on the realization that if the body of a human being is divided breadth-wise from the center, two body halves, i.e. a right half and a left half are obtained, it is important that the respective body half, i.e. leading side/portion of the user is utilized efficiently for obtaining maximum output. For example, if a right-handed user is playing a single hand game namely badminton, the right half of the user’s body becomes the leading side. Further, both the halves have their separate balancing center of their side/portions. The configuration of the universal hand grip ensures that the user gets maximum hold on the circumference of the grip.
  • the universal grip When the user holds the handle of a golf club or racket or industrial tool that is provided with the universal grip by any one or both hand, i.e. left or right hand or using both left and right hand. Said hand naturally/automatically connects with the center of leading half and ensures agronomic gripping of the handle. This is enabled as the user is able to utilize his/her full half as a leading portion/side, thereby ensuring that the user is able to perform much better as opposed to the case in conventional grips which allow users to utilize the half of their body only partially.
  • the configuration of the universal hand grip also makes a natural connect with the vestibular system which makes the use of instrument/ tool easy to use, and further opens the scope of improvement /innovation.
  • the universal hand grip is customizable according to the calculated formula given in Fig. 1(c) and Fig. 1(d) as per user requirement using a computer aided design application and its size and shape depends on the size and shape of human hands.
  • the computer aided design application takes an impression of palm of the user and record details of palm such as contour of palm, length of palm and fingers, valleys in the palm etc. Based on recorded details of palm, a profile of palm for user is created.
  • the profile of palm of user is fed in the cutting/ molding tool for manufacturing the hand grip.
  • the cutting/ molding tool used is in accordance with the material used for manufacturing the universal grip.
  • the material includes but is not limited to wood, metal, polymer, plastic etc.
  • the universal hand grip 100 comprises of three sections (101, 102, 103).
  • the three sections are either attached to each other by a joining method such as but not limited to gluing, welding thus forming a single body 100 or made continuous as a hand grip 100 using methods such as but not limited to injection molding method.
  • the first section 101 is conical in shape providing an open end 101a to insert the shaft of the equipment of various applications and a posterior end 101b.
  • the second section 102 has an anterior end 102a and a posterior end 102b and a third section 103 has an anterior end 103a and a posterior end 103b.
  • the posterior end 103b is extended to form a stopper end 103c.
  • the anterior end 102a of the second section 102 is connected to the first section 101 and the posterior end 102b of the second section 102 is connected to the anterior end 103a of the third section 103 thus forming a single body 100.
  • the first section 101 is conical in shape having an open end 101a and a posterior end 101b.
  • the first section 101 is hollow from inside to insert the shaft of equipment that expands along the length of the single body 100.
  • the second section 102 has its outer surface with a predefined degree taper emerging from the anterior end 102a to the posterior end 102b.
  • the diameter of the stopper end 103c is equal to the diameter of the anterior end 102a of the second section 102.
  • the length between posterior end 103b and the anterior end 103a of the third section 103 is equal to the diameter of the anterior end 103a of the third section 103.
  • the diameter of the anterior end 102a of the second section 102 is equal to the diameter of the posterior end 101b of first section 101 and the diameter of the posterior end 102b of the second section 102 is equal to the anterior end 103 a of the third section 103.
  • the present invention provides the front view of the universal hand grip 100.
  • the third section 103 has an arc or angle between the anterior end 103a and the posterior end 103b of the third section 103 and the diameter of the stopper end 103c is equal to the diameter of the the posterior end 103b of the third section 103.
  • the angle allows the hand grip 100 to move around in angle and arc allows the hand grip 100 to move fast around the user’s body.
  • the angle is useful in direction control applications and arc is useful in speed control applications.
  • the material of the hand grip 100 includes such as but not limited to hard rubber, wood, metal.
  • the hand grip 100 is optionally covered with a material such as but not limited to synthetic fibers, rubber, PVC and leather.
  • the centrifugal and centripetal force works together at the stopper end 103c.
  • the centrifugal force does not allow the handgrip 100 to slip out of the user’s hands and at the same time angle at the stopper end 103c allows the hands/fmgers to maintain the angle at the time of action.
  • the predefined degree taper allows the fmgers/hands of the user to hold the universal grip 100 and the centripetal force allows the hand grip to stay close to the user’s body.
  • Table 1 shown in Fig. 1(c) provides the degree of predefined degree taper for examples of variation in diameter and slope, examples of sizes of hands and fingers, holding lengths and angle base.
  • the table 1 shows, the calculation of length of the universal hand grip, predefined degree taper as taper increased in total grip length of the universal hand grip and taper increase in length of grip per mm are determined based on the above parameters for 20 users.
  • the configuration of the universal grip is realized based on experimentation by taking into consideration varying sizes and configurations of human hands.
  • the predefined degree taper calculated as taper increased in total grip length and the taper increase in length of grip per mm including the palm of the user is calculated using a formula given in equation (1) and (2):
  • width of single palm is equal to sum of width of the four fingers i.e. from little finger to index finger.
  • Table 1 shows that the variation in diameter is 1.3150 per 100mm length of the grip which is subject to ⁇ 20% variation depending upon race, region and age of the user.
  • Table 2 shown in Fig. 1(d) provides the degree of predefined degree taper for examples of variation in diameter and slope, examples of sizes of hands and fingers, holding lengths and angle base including the highest middle finger ratio of the user.
  • the calculation of length of the universal hand grip, predefined degree taper of the universal hand grip is determined using the middle ratio of the user based on the above parameters for 20 users.
  • the configuration of the universal grip is realized based on experimentation by taking into consideration varying sizes and configurations of human hands.
  • the predefined degree taper is calculated using a formula given in equation (3)-(4):
  • width of single palm is equal to sum of width of the four fingers i.e. from little finger to index finger.
  • Table 2 shows that the variation in diameter is 1.4600 per 100 mm length of the grip which is subject to ⁇ 20% variation depending upon race, region and age of the user.
  • the formula is useful in medical field as it helps in preventing medical illnesses caused due to force exerted by the muscles due to uncomfortable design of the grip.
  • the medical illnesses related to upper body and upper body muscles are prevented.
  • one such experimentation is undertaken in which various parameters such as width of palm of a single hand, total width of palms of both the hands of a user, length of thumb, length of index finger, length of middle/center figure, length of ring finger, length of little finger, average height of all fingers, average height increase in ratio of average height of fingers, combination of width of little and ring fingers, combination of width of little and middle fingers, combination of width of little and index fingers, combination of width of little finger and thumb, average of all the average fingers are taken into account. Based on these measured and calculated parameters of hand and fingers of multiple users, increase/decrease in length of the hand grip are determined to determine the overall length of the grip.
  • predefined degree taper of the second section of the universal hand grip is also determined based upon the above parameters for each user. Based on the taper calculated for each user, an average predefined degree taper is calculated which is employed in the universal hand grip according to the present invention. The participation of all the fingers allows the fingers to hold the maximum surface area that activates all the muscles accordingly. For a customized grip as per the user, a circumference calculation is taken in consideration based on diameter of anterior and posterior end of the second section and a taper length needed to hold the grip is achieved as per user. The customized grip is useful for single hand as well as double hand users.
  • a group of five users are given the conventional hand grip and the universal grip for rating on a variety of parameters including hold on grip, body posture, body movement comfort, body balance, finishing body posture, body coordination with grip, control on ball, distance increase, hitting quality, fear factor, increase in self-learning capabilities, sense of improvement, confidence and over all experience.
  • the five users include professional sportsmen and commoners. On scale of 1 to 10 based the conventional and the universal grip are rated where the value 1 indicates the lowest marks and the value 10 represents highest marks.
  • Table 3 shown in Fig. 1(e) shows the performance analysis of the conventional grip.
  • Table 3 it is shown that the majority of users rated the hold of the grip below 5 showing that the conventional grip provides an average hold on grip. Also, the users rated the fear factor with the conventional grip more than 7 i.e. there is a high fear factor that conventional grip acts differently than expected by the user.
  • Table 4 shown in Fig. 1(f) shows the performance analysis of the universal grip. Similar to analysis of conventional grip, the universal grip is rated on variety of parameters. In table 4 it is shown that the majority of users rated the hold of the grip more than 7 showing that the conventional grip provides a good hold on grip. Also, the users rated the fear factor with the conventional grip less than 4 i.e. there is a below average fear factor that conventional grip acts differently than expected by the user i.e. the universal grip stays in the expected position of the user. The universal grip is much more stable and remains straight as expected by the user in comparison with the conventional grip.
  • the present invention provides the universal hand grip 100 for a cricket bat.
  • the universal hand grip has three sections namely 101, 102 and 103. The three sections are attached to each other by various joining methods such as but not limited to pasting, welding.
  • the universal grip has a V-shape protrusion on the second section.
  • the V-shape protrusion is either half V shape starting from anterior end of the second section and ending at half the length of the second section or full V shape starting from anterior end of the second section and ending at posterior end of the second section.
  • the V-shape protrusion controls the face of the equipment as the V-shape protrusion helps in accommodating the muscle between the thumb and index finger which usually remains loose in conventional grips and applies a greater force. Further, the pointed protmsion of the V-shape helps the user to identify the straight face of the cricket bat.
  • Fig. 3(a) shows the conventional hand grip of the cricket bat and 3(b) shows the hand grip of the cricket bat in accordance to the embodiment of the present invention.
  • the V- shape protrusion helps the arc to control the cricket bat.
  • the height of the V-shape protrusion matches with the maximum thickness of the cricket bat.
  • the V-shape protrusion starts from the maximum thickness and finishes at the lowest diameter of the hand grip.
  • the V-shape protrusion is applicable either ways i.e. along the long arc or along the short arc if the grip is oval or semi oval as per requirement of the user.
  • the present invention provides the universal hand grip 100 for a badminton stick configured to fit the human hands in a way that maximizes the area of contact between the hand and said grip 100.
  • the universal hand grip 100 includes three sections namely 101, 102 and 103. The three sections are attached to each other by various integrated means such as but not limited to pasting, welding.
  • the diameter of said grip 100 of the badminton stick is minimum near the portion gripped by the little finger and is increased gradually through the portion gripped by the ring finger, portion gripped by the middle finger and the portion gripped by the index finger of hand of the user.
  • the stopper end 103c is provided at the end of said grip 100 to prevent sliding of the badminton stick due to axial force applied on the handle during swinging motion.
  • the cross section of the badminton stick is rectangular in shape. The first section is optionally beveled as it helps the user to differentiate if the badminton stick is facing straight.
  • the posterior end 101b of the first section 101 of the universal hand grip 100 is provided towards the head of the badminton stick.
  • the first section 101 has a desired taper such that the diameter of the open end 101a of the first section 101 is minimum and towards the head of the badminton stick and this diameter increases gradually towards the anterior end 102a of the second section 102.
  • the second section 102 is the grip portion of the universal grip 100 held by a user or a badminton player during operation of the badminton stick.
  • the second section 102 has a predefined degree taper such that the anterior end 102a of the second section 102 attached to the posterior end 101b of the first section 101 has a maximum diameter and the posterior end 102b of the second section 102 attached to the anterior end 103a of the third section 103 has a minimum diameter.
  • the posterior end 102b of the second section 102 that attaches to the anterior end 103a of the third section 103 is the section that is proximal to the little finger of the user when the user holds the badminton stick during operation.
  • the present invention provides the universal hand grip 100 for a golf stick configured to fit the human hands in a way that maximizes the area of contact between the hand and said grip 100.
  • the universal grip 100 includes three sections namely 101, 102 and 103. The three sections are attached to each other by various joining methods such as but not limited to pasting, welding.
  • the diameter of said grip 100 of the golf stick is minimum near the portion gripped by the little finger and is increased gradually through the portion gripped by the ring finger, portion gripped by the middle finger and the portion gripped by the index finger of hand of the user.
  • the stopper 103c is provided at the end of said grip 100 to prevent sliding of the golf stick 104 due to axial force applied on the handle during swinging motion.
  • the posterior end 101b of the first section 101 of the universal hand grip 100 is provided towards the operating section of the golf club or golf stick.
  • the operating section of the golf club or golf stick is that section which contacts the golf ball while operation of the golf stick during a game of golf.
  • the first section 101 has a desired taper such that the diameter of the first section 101 is minimum towards the operating section of the golf club or golf stick and this diameter increases gradually towards the anterior end 102a of the second section 102.
  • the second section 102 is the grip portion of the universal hand grip 100 held by a user or a golf player during operation of the golf club or golf stick.
  • the second section 102 has a predefined degree taper such that the anterior end 102a of the second section 102 attached to the posterior end 101b of the first section 101 has a maximum diameter and the posterior end 102b of the second section 102 attached to the anterior end 103a of the third section 103 has a minimum diameter.
  • the posterior end 102b of the second section 102 that attaches to the anterior end 103a of the third section 103 is the section that is proximal to the little finger of the user when the user holds the golf stick during operation.
  • the universal hand grip 100 includes a hollow section at the open end 101a of the first section 101 for gripping the end of the golf club or golf stick.
  • the diameter of the open end 101a of the universal grip 100 is configured according to the size and configuration of the golf stick.
  • the present invention provides the universal hand grip 100 for a hand tool hammer configured to fit the human hands in a way that maximizes the area of contact between the hand and said grip 100.
  • the universal hand grip 100 includes three sections namely 101, 102 and 103. The three sections are attached to each other by various integrated means such as but not limited to pasting, welding.
  • the diameter of said grip 100 of the hand tool hammer 106 is minimum near the portion gripped by the little finger and is increased gradually through the portion gripped by the ring finger, portion gripped by the middle finger and the portion gripped by the index finger of hand of the user.
  • the stopper end 103c is provided at the end of said grip 100 to prevent sliding of the hand tool hammer 106 due to axial force applied on the grip 100 during swinging motion.
  • the cross section of the hand tool 106 is preferably rectangular in shape.
  • the posterior end 101b of the first section 101 of the universal hand grip 100 is provided towards the head of the hand tool hammer.
  • the first section 101 has a desired taper such that the diameter of the first section 101 is minimum towards the head of the hand tool hammer and this diameter increases gradually towards the anterior end 102a of the second section 102.
  • the second section 102 is the grip portion of the universal hand grip 100 held by a user.
  • the second section 102 has a predefined degree taper such that the anterior end 102a of the second section 102 attached to the posterior end 101b of the first section 101 has a maximum diameter and the posterior end 102b of the second section 102 attached to the anterior end 103a of the third section 103 has a minimum diameter.
  • the posterior end 102b of the second section 102 that attaches to the anterior end 103a of the third section 103 is the section that is proximal to the little finger of the user when the user holds the hand tool hammer during operation.
  • the universal hand grip 100 includes a hollow section at open end 101a for gripping the end of the hand tool hammer.
  • the diameter of the open end 101a of the universal hand grip 100 is configured according to the size and configuration of the hand tool hammer.
  • the present invention provides the universal hand grip 100 for a tooth brush.
  • the universal hand grip 100 includes three sections namely 101, 102 and 103. The three sections are attached to each other by various integrated means such as but not limited to pasting, welding.
  • force from the hand is transferred from the little finger to the index finger through ring finger and middle finger of hand of the user and the force from the hand gets transferred to the universal hand grip 100.
  • the diameter of said grip 100 of the tooth brush is minimum near the portion gripped by the little finger and is increased gradually through the portion gripped by the ring finger, portion gripped by the middle finger and the portion gripped by the index finger of hand of the user.
  • the stopper end 103c is provided at the end of said grip 100 to prevent sliding of the tooth brush due to axial force applied on the grip 100.
  • the cross section of the tooth brush is preferably circular in shape.
  • the posterior end 101b of the first section 101 of the universal hand grip 100 is provided towards the head of the tooth brush.
  • the first section 101 has a desired taper such that the diameter of the first section 101 is minimum towards the head of the tooth brush and this diameter increases gradually towards the anterior end 102a of the second section 102.
  • the second section 102 is the grip portion of the universal hand grip 100 held by a user.
  • the second section 102 also has a predefined degree taper such that the anterior end 102a of the second section 102 attached to the first section 101 has a maximum diameter and the posterior end 102b of the second section 102 attached to the anterior end 103a of the third section 103 has a minimum diameter.
  • the posterior end 102b of the second section 102 that attaches to the anterior end 103 a of the third section 103 is the section that is proximal to the little finger of the user when the user holds the tooth brush.
  • the present invention provides the universal hand grip 100 for a pen.
  • the universal hand grip 100 includes three sections namely 101, 102 and 103. The three sections are attached to each other by various means such as but not limited to pasting, welding.
  • force from the hand is transferred from the little finger to the index finger through ring finger and middle finger of hand of the user and the force from the hand gets transferred to the universal hand grip 100.
  • the diameter of said grip 100 of the pen is minimum near the portion gripped by the little finger and is increased gradually through the portion gripped by the ring finger, portion gripped by the middle finger and the portion gripped by the index finger of hand of the user.
  • the stopper end 103c is provided at the end of said grip 100 to prevent sliding.
  • the cross section of the pen is preferably circular in shape.
  • the posterior end 101b of the first section 101 of the universal hand grip 100 is provided towards the head of the pen has a finger tip arch designed ergonomically to fit exactly in finger tip arch of user and prevent the issue such as problem of children bending down close to the pen or handbook.
  • the finger tip arch and slope of the second section 102 both are reverse to each other and hence prevent the slippage of pen while writing.
  • the first section 101 has a desired taper such that the diameter of the first section 101 is minimum towards the head of the pen and this diameter increases gradually towards the anterior end 102a of the second section 102.
  • the first section 101 is narrowed down to hold the nib.
  • the second section 102 is the grip portion of the universal hand grip 100 held by a user.
  • the second section 102 also has a predefined degree taper such that the anterior end 102a of the second section 102 attached to the first section 101 has a maximum diameter and the posterior end 102b of the second section 102 attached to the anterior end 103a of the third section 103 has a minimum diameter.
  • the present invention provides the universal hand grip 100 for a jug.
  • the universal hand grip 100 includes three sections namely 101, 102 and 103.
  • the three sections are attached to each other by various integrated means such as but not limited to pasting, welding.
  • the second section 102 has a predefined degree taper such that the anterior end 102a of the second section 102 attached to the posterior end 101b of the first section 101 has a maximum diameter and the posterior end 102b of the second section 102 attached to the anterior end 103a of the third section 103 has a minimum diameter.
  • the posterior end 102b of the second section 102 that attaches to the anterior end 103 a of the third section 103 is the section that is proximal to the little finger of the user when the user holds the jug.
  • the present invention provides the universal hand grip 100 for a bike.
  • the universal hand grip 100 includes three sections namely 101, 102 and 103.
  • the second section 102 has a predefined degree taper such that the anterior end 102a of the second section 102 has a maximum diameter and is attached to the anterior end 103 a of the third section 103 having a minimum diameter.
  • the angle provided in the third section ensures firm grip of the handle and does not let the handle slip from hand while riding.
  • the present invention provides a universal handgrip that helps in increasing the performance of the user as it allows the user to move, twist, turn, rotate easily and reduce the body effort of the user at the time of usage.
  • the universal hand grip ensures a perfect connection with nervous system that further activates the sense of using maximum strength of hands/fmgers and body. A user’s body never loses control at any time of usage of the universal hand grip.
  • the universal hand grip ensures that a perfect balance of body and strength is created at the time of holding the grip. Further, the universal hand grip ensures a perfect balance between upper body and lower body of the user. It allows an ergonomic hold of the universal hand grip without any compromise with uncomfortable body posture.

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Abstract

The present invention relates to a universal grip employed as a single hand or double hand ergonomic grip to reduce the body effort of the user. More particularly, the present invention relates to a universal hand grip with a predefined degree taper/angle as per devised formula to improve the performance of the user. The universal hand grip has an arc, angle and a V shape protrusion for improving the grip and performance of the user and for controlling the centripetal and centrifugal force at the same time.

Description

“UNIVERSAL GRIP FOR HANDLES”
FIELD OF THE INVENTION
The present invention relates to a universal grip employed as a single hand or double hand ergonomic grip to reduce the body effort of the user. More particularly, the present invention relates to a universal hand grip with a predefined degree taper/angle as per devised formula to improve the performance of the user. The universal hand grip has an arc, angle and a V shape protrusion for improving the grip and performance of the user and for controlling the centripetal and centrifugal force at the same time.
BACKGROUND OF THE INVENTION
Handles have generic use in a variety of applications such as sports equipment like cricket bats, golf clubs, badminton rackets etc., domestic equipment like toothbrushes etc., industrial tools like hammers, screw drivers, puckers etc., stationary equipment like pens, pencil, paint brushes etc., medical equipment’s, physiotherapy etc., and many other diverse applications like household items like jug, cups, spoon utensils. The successful usage of sports equipment and industrial tools is dependent upon the ability of a user to hold the equipment or tool in an optimum position by hand and achieve its movement solely based on the movement of users’ hands. Firmness of the hold on an equipment or tool is dependent on the friction between palm of a hand and the surface of grip. It is a known fact that friction is dependent upon the following:
(i) roughness (co-effrcient of friction) of two surfaces, namely hands of a user and the material and shape of the grip; (ii) the amount of surface area that is in contact between two surfaces; and
(iii) the amount of force applied by hand muscles in tightening the grip.
Out of the three factors affecting friction between the palm and handle -grip material as described above, roughness is constant for any two given surfaces and hence can be ignored. The amount of force applied is dependent upon the user and hence may be ignored. The factor that any grip design of a handle needs to address is maximizing the surface area. Majority of existing handle-grip designs offer a virtually flat or regular and fixed ribbing on their surface. On the other hand, human hands have anatomically non- uniform contouring and vary from person to person. This results in either a small portion of a human hand being in contact with the handle-grip or the user needing to apply excessive force to increase the surface area of contact. Also, the conventional grips do not allow all the fingers to hold the maximum surface area and hence all the muscles do not activate accordingly. This results in tiredness and tightness or reduced blood flow to surrounding muscle groups, thus affecting performance of the user. The usage of such conventional handles result in medical conditions such as tennis elbow, etc. While using conventional handles, users face multiple challenges such as loss of energy and loss of hold while making balance, creating speed, or while generating power. Further, users consume extra time to perform an activity and lose stability while using conventional handles.
Balance, speed, power and stability are important factors for almost all equipment, particularly in sports. However, conventional designs of handles face challenges in generating accurate balance, power and/or stability. Further, conventional designs of handles fail to create an accurate connection with the body or senses of users. Furthermore, users face difficulty in producing desired finishing and result with existing handles. Moreover, usage of conventional handles results in an increased pressure, increased mental and physical stress, confusion and fear in mind of user during use, thereby demotivating the user to use the equipment/tools equipped with such handles. In other words, conventional designs of handles restrict a user’s scope of improvement in all working fields. Furthermore, ergonomic connection is completely missing in conventional designs of handles grips. In almost all conventional handles/grips, users are required to adjust their gripping style or operation as per the available design of handles /grip. Imperfect connection of user’s hands or fingers with the handle/grip results in a number of challenges, such as partial or complete disconnection of handle/grip from users’ hands or fingers, inability of users to use their strength completely, inability of the vestibular system of users to ensure complete balance, sub- concious stress, fatigue, more time taken to complete the job, inability to perform according to users’ potential, and so on. Further, while holding conventional handles/grips, user’s mind is not able to give proper order, thereby leading the user to stay in a confuse state and many times, the user is not able to understand the reason for disconnection of the handle/grip from hands or fingers. This creates a sense of fear in the minds of users. In the case of a sportsperson, especially for sports such as golf, cricket, badminton, lawn tennis, table tennis etc., the sense of fear due to unpredictability of positive connection of the handle/grip with users’ hands or fingers further effects their performance, which is not desirable.
Conventional grips, such as grips for golf clubs, have outwards taper. Such grips force body of a sportsperson to over swing in order to arrive at the result, for example, connecting with a golf ball. Importantly, over swinging of a golf club leads to mental stress, which results in fatigue and ultimately an unknown confused state of mind of the user with unsolved questions.
US3837647 discloses a golf club hand grip formed of a tubular sleeve of substantially circular cross-section surrounding the free end of the golf club shank, with the grip being formed in an elongated, truncated conical shape whose larger base is at the sleeve end closest to the club head end of the shank and whose smaller base is adjacent the free end of the shank, so that the outer surface of the grip is gradually tapered along a straight line taper whose smaller diameter is adjacent the free end of the club, for the full length of the grip, with the grip smaller diameter end terminating in an integral, enlarged diameter knob-like portion. The main drawback of the invention is that the arc provided in the golf club hand grip is not smooth and the golf club is imbalanced due to the imbalance of the steep of the grip. Moreover, the edges shown in the invention is aggressive and not user-friendly.
US2131966 discloses a golf club handle having a gripping portion of a length adapted to accommodate the two hands of the player. Said gripping portion having a point of larger cross-section intermediate its handle, the upper portion of the grip tapering towards the top of the club so as to have its smallest cross-section adjacent the top of the club and the lower portion of the grip tapering toward the head end of the club. Said upper portion of such cross-sectional size is such that it may be substantially enveloped by the little, ring and middle fingers. The main drawback of the invention is that the grip mentioned in the invention is confined to the golf players. US6890265B2 discloses a reverse taper grip for attachment to an elongated golf club shaft or other similar handle or the like is provided, the grip being formed of resilient synthetic resin material and presenting an outer gripping surface of reverse taper design along at least a portion of the grip. The grip presents a moderate reverse taper angle with the ratio of the greater thickness end to the smaller thickness end being from about 1.1- 1.7. The main drawback of the invention is that the taper grip has no stopper or stop end to control the speed of the grip and it is confined to golf players.
Designing handles for sports goods like golf sticks and cricket bat represent two problems. One of the problem is the centrifugal force which is experienced when swung and the other is the need to hold it in an ergonomically convenient way in order to apply force. Conventional handles mostly solve only one of these two problems. Mostly the wider outward of the handle, curbs only the centrifugal force. A few designs narrow outwards to provide ergonomic convenience but let the centrifugal force work freely.
Therefore, there is a need for a grip/handle portion which is efficient in handling the centrifugal force and enables a user to perform ergonomically and efficiently.
OBJECT OF THE INVENTION
The main object of the present invention is to provide a universal hand grip with a predefined calculated degree taper to improve the performance of the user. Another object of the present invention is to provide a universal hand grip that does not allow the body of the user to lose control at any time of usage.
Yet another object of the present invention is to provide an ergonomically universal hand grip that is easy to hold and enables the hand of the user to make a circle/arc or any angle at any degree. Yet another object of the present invention is to provide a universal hand grip that enables the user to move, twist, turn and rotate easily at the time of usage.
Yet another object of the present invention is to provide a universal hand grip with an arc, angle and a V shape protrusion for improving the grip and performance of the user. Yet another object of the present invention is to provide a universal grip that narrows down towards the outward end and then widens at the tip of the outward end to overcome the issue of centrifugal force.
Yet another object of the present invention is to provide a calculated formula rate of taper/angle and a gradient reversal that curbs the centrifugal force without any ergonomic inconvenience.
Still another object of the present invention is to provide a universal hand grip having a first section, a second section and a third section either attached together to form a single continuous body or made continuous as a single body.
SUMMARY OF THE INVENTION
The present invention provides a universal hand grip with a predefined degree taper to improve the performance of the user. The universal grip employed as a single hand or double hand grip is used for various applications.
In a main embodiment, the present invention provides a universal hand grip comprising a first section having an open end and a posterior end; a second section having an anterior end and a posterior end; a third section having an anterior end and a posterior end; the posterior end of the third section is extended to form a stopper end; the anterior end of the second section is connected to the posterior end of the first section and the posterior end of the second section is connected to the anterior end of the third section thus forming the hand grip; the first section is hollow to accommodate shaft of an equipment that extends inside the hand grip; the second section has its outer surface with a predefined degree taper emerging from the anterior side to the posterior side; the diameter of the stopper end is equal to the diameter of the anterior end of the second section; the length between posterior end and the anterior end of the third section is equal to the diameter of the anterior end of the third section; the diameter of the anterior end of the second section is equal to the diameter of the posterior end of the first section and the diameter of the posterior end of the second section is equal to the diameter of the anterior end of the third section; the hand grip transfers force exerted by hand of a user to said grip; the hand grip optionally has an arc or an angle between the anterior end and the posterior end of the third section and the diameter of the stopper end is equal to the diameter of the posterior end of the third section; and the hand grip optionally has a V- shape protrusion on the second section. The arc provided in third section provides an ergonomic fit as well as helps in preventing slippage of grip. In yet another embodiment, the present invention provides a universal hand grip having a cross-section of a shape including but not limited to circular, rectangular, truncated square pyramidal structure, truncated rectangular pyramidal structure, brick taper, oval, egg shape. The three sections are attached either by a joining method such as but not limited to gluing, welding or made continuous as a single body. The equipments include but are not limited to single hand equipment such as but not limited to polo, all racket games like badminton, lawn tennis, table tennis, snooker, billiards etc.; two hand equipments such as but not limited to golf, cricket, hockey, etc.; three finger holding equipments such as but not limited to pen, paint brush, toothbrush etc; medical equipments such as walker, dental handpiece etc.; industrial tools such as hammer, screwdriver etc. and household items such as jug, cleaning brushes etc. The first section is preferably conical in shape. The predefined degree taper is calculated as taper increase in total grip length which is directly proportional to the length of the grip and taper increase in length of grip per mm. However, the diameter of the hand grip is subject to change based on age, size of the hand and region to which the user belongs. Further, the diameter of handgrip is subject to change based on weight of the equipment to which it is connected. The hand grip is optionally covered with a sleeve made of a material including but not limited to synthetic fibers, rubber, PVC, leather, wood etc.
The universal grip is operated by any human being irrespective of their age, profession etc. and is beneficial for sportspersons, industrial workers and users working in a plurality of occupations and is also useful in household items. The universal hand grip allows one hand or both the hands to be freely turned or twisted in any desired direction without any error to perform different tasks.
In an additional embodiment, the present invention provides a universal hand grip comprising a first section, a second section having an anterior end and a posterior end and a third section having an anterior end and a posterior end. The posterior end of the third section is extended to form a stopper end. The anterior end of the second section is connected to the posterior end of the first section and the posterior end of the second section is connected to the anterior end of the third section thus forming a single body. The sections are attached either by joining methods or made continuous as a single body of the hand grip. The second section has its outer surface with a predefined degree taper emerging from the anterior side to the posterior side. The universal grip when handled by the user transfers the force from the hand of the user to said grip. The universal grip has an arc between the anterior end and the posterior end of the third section. The diameter of the stopper end is equal to the length between the anterior end and the posterior end of the third section. The universal grip has a V-shape protrusion on the second section. The V-shape protrusion is either half V shape starting from anterior end of the second section and ending at half the length of the second section or full V shape starting from anterior end of the second section and ending at posterior end of the second section. The V-shape protrusion controls the face of the equipment.
In an additional embodiment, the present invention provides a universal hand grip comprising a first section having an open end and a posterior end, a second section having an anterior end and a posterior end and a third section having an anterior end and a posterior end. The posterior end of the third section is extended to form a stopper end. The anterior end of the second section is connected to the posterior end of the first section and the posterior end of the second section is connected to the anterior end of the third section thus forming a single body. The sections are attached either by joining methods or made continuous as a single body of the hand grip. The second section has its outer surface with a predefined degree taper emerging from the anterior side to the posterior side. The universal grip when handled by the user transfers the force from the hand of the user to said grip. The universal grip has an angle between the anterior end and the posterior end of the third section. The angle at the third section moves hand in an angle according to the user’s needs. The diameter of the stopper end is equal to the diameter of the posterior end of the third section. The universal grip has a V-shape protrusion on the second section. The V-shape protrusion is either half V shape starting from anterior end of the second section and ending at half the length of the second section or full V shape starting from anterior end of the second section and ending at posterior end of the second section. The V-shape protrusion controls the face of the equipment.
The universal hand grip transfers the force from the hand to said grip starting from little finger to the index finger through ring finger and middle finger of hand of the user. The universal hand grip allows all the fingers to participate and perform in order/ sequence according to the structure of fingers. The sequel balance combination of fingers further connects with other structural and muscles of the body that leads to easy free flow of energy in the body. The universal grip ensures that the user gets hold on the circumference of the grip and the user utilizes the strength of all the fingers and the hand.
BRIEF DESCRIPTION OF DRAWINGS
An understanding of the device of the present invention may be obtained by reference to the following drawings: Fig. 1(a) and Fig. 1(b) shows a perspective view and the front view of the universal hand grip in accordance to an embodiment of the present invention.
Fig. 1(c) represents a table of degree of predefined degree taper including palm of user.
Fig. 1(d) represents a table of degree of predefined taper including highest middle finger ratio of user. Fig. 1(e) represents a table of performance analysis of conventional grip.
Fig. 1(f) represents a table of performance analysis of universal grip.
Fig. 2(a) to 2(c) illustrates a perspective view and front view of the universal hand grip for cricket bat in accordance to an embodiment of the present invention.
Fig. 3(a) and Fig. 3(b) illustrates a cross sectional view of conventional hand grip and the universal hand grip in accordance to an embodiment of the present invention.
Fig. 4 shows a front view of the universal hand grip for badminton racquet in accordance to an embodiment of the present invention.
Fig. 5 shows a front view of the universal grip for the golf stick in accordance to an embodiment of the present invention. Fig. 6 shows a front view of the universal grip for the hand tool hammer in accordance to an embodiment of the present invention.
Fig. 7 shows a front view of the universal grip for the tooth brush in accordance to an embodiment of the present invention. Fig. 8 shows a front view of the universal grip for the pen in accordance to an embodiment of the present invention.
Fig. 9 shows a front view of the universal grip for the Jug in accordance to an embodiment of the present invention.
Fig. 10 shows a front view of the universal grip for the bike in accordance to an embodiment of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
Many aspects of the invention can be better understood with references made to the drawings below. The components in the drawings are not necessarily drawn to scale. Instead, emphasis is placed upon clearly illustrating the components of the present invention. Moreover, like reference numerals designate corresponding parts through the several views in the drawings. Before explaining at least one embodiment of the invention, it is to be understood that the embodiments of the invention are not limited in their application to the details of construction and to the arrangement of the components set forth in the following description or illustrated in the drawings. The embodiments of the invention are capable of being practiced and carried out in various ways. In addition, the phraseology and terminology employed herein are for the purpose of description and should not be regarded as limiting.
The present invention provides a universal hand grip to increase the performance of the user. The universal hand grip allows the user to move, twist, turn, rotate easily and reduce the body effort of the user at the time of usage. The universal hand grip ensures an increase in performance of a user to about double in terms of performance and results obtained as compared to conventional grips. The universal hand grip ensures a perfect connection with nervous system that further activates the sense of using maximum strength of hands/fmgers and body. A user’s body never loses control at any time of usage of the universal hand grip. The universal hand grip ensures that a perfect balance of body and strength is created at the time of holding the grip. The universal hand grip also ensures that a perfect balance is created between upper body and lower body of the user. It is very easy to ergonomically hold the universal hand grip. Said grip ensures that hands of the user act as socket to the external object and the user makes a circle/arc or any angle at any degree while operating the universal grip. The universal hand grip ensures that the wrist of the user is strong at the time of usage and ensures that the body effort by the user is substantially reduced and the body posture of the user is correct. Said grip directly connects to the core muscles of the user and ensures that hand(s) of a user are stress free at the time of usage. Said grip ensures that no additional/undesired pressure is applied on any finger at the time of usage and ensures that a balanced energy flow (blood circulation) in fingers is maintained during use.
The present invention is also based on the realization that if the body of a human being is divided breadth-wise from the center, two body halves, i.e. a right half and a left half are obtained, it is important that the respective body half, i.e. leading side/portion of the user is utilized efficiently for obtaining maximum output. For example, if a right-handed user is playing a single hand game namely badminton, the right half of the user’s body becomes the leading side. Further, both the halves have their separate balancing center of their side/portions. The configuration of the universal hand grip ensures that the user gets maximum hold on the circumference of the grip. When the user holds the handle of a golf club or racket or industrial tool that is provided with the universal grip by any one or both hand, i.e. left or right hand or using both left and right hand. Said hand naturally/automatically connects with the center of leading half and ensures agronomic gripping of the handle. This is enabled as the user is able to utilize his/her full half as a leading portion/side, thereby ensuring that the user is able to perform much better as opposed to the case in conventional grips which allow users to utilize the half of their body only partially. The configuration of the universal hand grip also makes a natural connect with the vestibular system which makes the use of instrument/ tool easy to use, and further opens the scope of improvement /innovation.
In the present invention, the universal hand grip is customizable according to the calculated formula given in Fig. 1(c) and Fig. 1(d) as per user requirement using a computer aided design application and its size and shape depends on the size and shape of human hands. The computer aided design application takes an impression of palm of the user and record details of palm such as contour of palm, length of palm and fingers, valleys in the palm etc. Based on recorded details of palm, a profile of palm for user is created. The profile of palm of user is fed in the cutting/ molding tool for manufacturing the hand grip. The cutting/ molding tool used is in accordance with the material used for manufacturing the universal grip. The material includes but is not limited to wood, metal, polymer, plastic etc. When molding is used, a mold is made and then the universal grip is manufactured by a process including but not limited to injection molding and said grip is made according to the shape of human hand mold. Now referring to Fig. 1(a), the present invention provides a schematic representation of the universal hand grip 100. The universal hand grip 100 comprises of three sections (101, 102, 103). The three sections are either attached to each other by a joining method such as but not limited to gluing, welding thus forming a single body 100 or made continuous as a hand grip 100 using methods such as but not limited to injection molding method. The first section 101 is conical in shape providing an open end 101a to insert the shaft of the equipment of various applications and a posterior end 101b. The second section 102 has an anterior end 102a and a posterior end 102b and a third section 103 has an anterior end 103a and a posterior end 103b. The posterior end 103b is extended to form a stopper end 103c. The anterior end 102a of the second section 102 is connected to the first section 101 and the posterior end 102b of the second section 102 is connected to the anterior end 103a of the third section 103 thus forming a single body 100. The first section 101 is conical in shape having an open end 101a and a posterior end 101b. The first section 101 is hollow from inside to insert the shaft of equipment that expands along the length of the single body 100. The second section 102 has its outer surface with a predefined degree taper emerging from the anterior end 102a to the posterior end 102b. The diameter of the stopper end 103c is equal to the diameter of the anterior end 102a of the second section 102. The length between posterior end 103b and the anterior end 103a of the third section 103 is equal to the diameter of the anterior end 103a of the third section 103. The diameter of the anterior end 102a of the second section 102 is equal to the diameter of the posterior end 101b of first section 101 and the diameter of the posterior end 102b of the second section 102 is equal to the anterior end 103 a of the third section 103.
Now referring to Fig. 1(b), the present invention provides the front view of the universal hand grip 100. The third section 103 has an arc or angle between the anterior end 103a and the posterior end 103b of the third section 103 and the diameter of the stopper end 103c is equal to the diameter of the the posterior end 103b of the third section 103. The angle allows the hand grip 100 to move around in angle and arc allows the hand grip 100 to move fast around the user’s body. The angle is useful in direction control applications and arc is useful in speed control applications. The material of the hand grip 100 includes such as but not limited to hard rubber, wood, metal. The hand grip 100 is optionally covered with a material such as but not limited to synthetic fibers, rubber, PVC and leather.
The centrifugal and centripetal force works together at the stopper end 103c. The centrifugal force does not allow the handgrip 100 to slip out of the user’s hands and at the same time angle at the stopper end 103c allows the hands/fmgers to maintain the angle at the time of action. The predefined degree taper allows the fmgers/hands of the user to hold the universal grip 100 and the centripetal force allows the hand grip to stay close to the user’s body.
Table 1 shown in Fig. 1(c) provides the degree of predefined degree taper for examples of variation in diameter and slope, examples of sizes of hands and fingers, holding lengths and angle base. The table 1 shows, the calculation of length of the universal hand grip, predefined degree taper as taper increased in total grip length of the universal hand grip and taper increase in length of grip per mm are determined based on the above parameters for 20 users. The configuration of the universal grip is realized based on experimentation by taking into consideration varying sizes and configurations of human hands. The predefined degree taper calculated as taper increased in total grip length and the taper increase in length of grip per mm including the palm of the user is calculated using a formula given in equation (1) and (2):
Predefined degree taper = Taper increased in total grip length = Tength of the grip * Taper increase in length of grip per mm ... (1)
Taper increase in length of grip per mm = Average ratio of all the fingers/ width of single palm ... (2)
Wherein, width of single palm is equal to sum of width of the four fingers i.e. from little finger to index finger.
Table 1 shows that the variation in diameter is 1.3150 per 100mm length of the grip which is subject to ± 20% variation depending upon race, region and age of the user. Table 2 shown in Fig. 1(d) provides the degree of predefined degree taper for examples of variation in diameter and slope, examples of sizes of hands and fingers, holding lengths and angle base including the highest middle finger ratio of the user.
As shown in the table, the calculation of length of the universal hand grip, predefined degree taper of the universal hand grip is determined using the middle ratio of the user based on the above parameters for 20 users. The configuration of the universal grip is realized based on experimentation by taking into consideration varying sizes and configurations of human hands. The predefined degree taper is calculated using a formula given in equation (3)-(4):
Predefined degree taper = Taper increased in total grip length = Tength of the grip * Taper increase in length of grip per mm ... (3)
Taper increase in length of grip per mm = Highest middle finger ratio taken/ width of single palm ... (4)
Wherein, width of single palm is equal to sum of width of the four fingers i.e. from little finger to index finger.
Table 2 shows that the variation in diameter is 1.4600 per 100 mm length of the grip which is subject to ± 20% variation depending upon race, region and age of the user.
The formula is useful in medical field as it helps in preventing medical illnesses caused due to force exerted by the muscles due to uncomfortable design of the grip. The medical illnesses related to upper body and upper body muscles are prevented.
In an example, one such experimentation is undertaken in which various parameters such as width of palm of a single hand, total width of palms of both the hands of a user, length of thumb, length of index finger, length of middle/center figure, length of ring finger, length of little finger, average height of all fingers, average height increase in ratio of average height of fingers, combination of width of little and ring fingers, combination of width of little and middle fingers, combination of width of little and index fingers, combination of width of little finger and thumb, average of all the average fingers are taken into account. Based on these measured and calculated parameters of hand and fingers of multiple users, increase/decrease in length of the hand grip are determined to determine the overall length of the grip. Finally, predefined degree taper of the second section of the universal hand grip is also determined based upon the above parameters for each user. Based on the taper calculated for each user, an average predefined degree taper is calculated which is employed in the universal hand grip according to the present invention. The participation of all the fingers allows the fingers to hold the maximum surface area that activates all the muscles accordingly. For a customized grip as per the user, a circumference calculation is taken in consideration based on diameter of anterior and posterior end of the second section and a taper length needed to hold the grip is achieved as per user. The customized grip is useful for single hand as well as double hand users.
Further, for performance analysis of the universal grip, a group of five users are given the conventional hand grip and the universal grip for rating on a variety of parameters including hold on grip, body posture, body movement comfort, body balance, finishing body posture, body coordination with grip, control on ball, distance increase, hitting quality, fear factor, increase in self-learning capabilities, sense of improvement, confidence and over all experience. The five users include professional sportsmen and commoners. On scale of 1 to 10 based the conventional and the universal grip are rated where the value 1 indicates the lowest marks and the value 10 represents highest marks.
Table 3 shown in Fig. 1(e) shows the performance analysis of the conventional grip. In table 3 it is shown that the majority of users rated the hold of the grip below 5 showing that the conventional grip provides an average hold on grip. Also, the users rated the fear factor with the conventional grip more than 7 i.e. there is a high fear factor that conventional grip acts differently than expected by the user.
Table 4 shown in Fig. 1(f) shows the performance analysis of the universal grip. Similar to analysis of conventional grip, the universal grip is rated on variety of parameters. In table 4 it is shown that the majority of users rated the hold of the grip more than 7 showing that the conventional grip provides a good hold on grip. Also, the users rated the fear factor with the conventional grip less than 4 i.e. there is a below average fear factor that conventional grip acts differently than expected by the user i.e. the universal grip stays in the expected position of the user. The universal grip is much more stable and remains straight as expected by the user in comparison with the conventional grip.
EXAMPLE 1
UNIVERSAL HAND GRIP FOR A CRICKET BAT Now referring to Fig. 2(a)-2(c), the present invention provides the universal hand grip 100 for a cricket bat. The universal hand grip has three sections namely 101, 102 and 103. The three sections are attached to each other by various joining methods such as but not limited to pasting, welding. The universal grip has a V-shape protrusion on the second section. The V-shape protrusion is either half V shape starting from anterior end of the second section and ending at half the length of the second section or full V shape starting from anterior end of the second section and ending at posterior end of the second section. The V-shape protrusion controls the face of the equipment as the V-shape protrusion helps in accommodating the muscle between the thumb and index finger which usually remains loose in conventional grips and applies a greater force. Further, the pointed protmsion of the V-shape helps the user to identify the straight face of the cricket bat.
Fig. 3(a) shows the conventional hand grip of the cricket bat and 3(b) shows the hand grip of the cricket bat in accordance to the embodiment of the present invention. The V- shape protrusion helps the arc to control the cricket bat. The height of the V-shape protrusion matches with the maximum thickness of the cricket bat. The V-shape protrusion starts from the maximum thickness and finishes at the lowest diameter of the hand grip. The V-shape protrusion is applicable either ways i.e. along the long arc or along the short arc if the grip is oval or semi oval as per requirement of the user.
EXAMPLE 2
UNIVERSAL HAND GRIP FOR A BADMINTON STICK
Now referring to Fig. 4, the present invention provides the universal hand grip 100 for a badminton stick configured to fit the human hands in a way that maximizes the area of contact between the hand and said grip 100. The universal hand grip 100 includes three sections namely 101, 102 and 103. The three sections are attached to each other by various integrated means such as but not limited to pasting, welding. When the badminton stick fitted with the universal grip 100 is gripped by hand(s) of a user and operated, force from the hand is transferred from the little finger to the index finger through ring finger and middle finger of hand of the user and the force from the hand gets transferred to the universal grip 100. The diameter of said grip 100 of the badminton stick is minimum near the portion gripped by the little finger and is increased gradually through the portion gripped by the ring finger, portion gripped by the middle finger and the portion gripped by the index finger of hand of the user. The stopper end 103c is provided at the end of said grip 100 to prevent sliding of the badminton stick due to axial force applied on the handle during swinging motion. The cross section of the badminton stick is rectangular in shape. The first section is optionally beveled as it helps the user to differentiate if the badminton stick is facing straight.
The posterior end 101b of the first section 101 of the universal hand grip 100 is provided towards the head of the badminton stick. The first section 101 has a desired taper such that the diameter of the open end 101a of the first section 101 is minimum and towards the head of the badminton stick and this diameter increases gradually towards the anterior end 102a of the second section 102. The second section 102 is the grip portion of the universal grip 100 held by a user or a badminton player during operation of the badminton stick. The second section 102 has a predefined degree taper such that the anterior end 102a of the second section 102 attached to the posterior end 101b of the first section 101 has a maximum diameter and the posterior end 102b of the second section 102 attached to the anterior end 103a of the third section 103 has a minimum diameter. The posterior end 102b of the second section 102 that attaches to the anterior end 103a of the third section 103 is the section that is proximal to the little finger of the user when the user holds the badminton stick during operation.
EXAMPLE 3
UNIVERSAL HAND GRIP FOR A GOLF STICK
Now referring to Fig. 5, the present invention provides the universal hand grip 100 for a golf stick configured to fit the human hands in a way that maximizes the area of contact between the hand and said grip 100. The universal grip 100 includes three sections namely 101, 102 and 103. The three sections are attached to each other by various joining methods such as but not limited to pasting, welding. When the golf stick fitted with the universal grip 100 is gripped by hand(s) of a user and operated, force from the hand is transferred from the little finger to the index finger through ring finger and middle finger of hand of the user and the force from the hand gets transferred to the universal grip 100. The diameter of said grip 100 of the golf stick is minimum near the portion gripped by the little finger and is increased gradually through the portion gripped by the ring finger, portion gripped by the middle finger and the portion gripped by the index finger of hand of the user. The stopper 103c is provided at the end of said grip 100 to prevent sliding of the golf stick 104 due to axial force applied on the handle during swinging motion.
The posterior end 101b of the first section 101 of the universal hand grip 100 is provided towards the operating section of the golf club or golf stick. The operating section of the golf club or golf stick is that section which contacts the golf ball while operation of the golf stick during a game of golf. The first section 101 has a desired taper such that the diameter of the first section 101 is minimum towards the operating section of the golf club or golf stick and this diameter increases gradually towards the anterior end 102a of the second section 102. The second section 102 is the grip portion of the universal hand grip 100 held by a user or a golf player during operation of the golf club or golf stick. The second section 102 has a predefined degree taper such that the anterior end 102a of the second section 102 attached to the posterior end 101b of the first section 101 has a maximum diameter and the posterior end 102b of the second section 102 attached to the anterior end 103a of the third section 103 has a minimum diameter. The posterior end 102b of the second section 102 that attaches to the anterior end 103a of the third section 103 is the section that is proximal to the little finger of the user when the user holds the golf stick during operation.
The universal hand grip 100 includes a hollow section at the open end 101a of the first section 101 for gripping the end of the golf club or golf stick. The diameter of the open end 101a of the universal grip 100 is configured according to the size and configuration of the golf stick.
EXAMPLE 4
UNIVERSAL HAND GRIP FOR A HAND TOOL HAMMER
Now referring to Fig. 6, the present invention provides the universal hand grip 100 for a hand tool hammer configured to fit the human hands in a way that maximizes the area of contact between the hand and said grip 100. The universal hand grip 100 includes three sections namely 101, 102 and 103. The three sections are attached to each other by various integrated means such as but not limited to pasting, welding. When the handle tool hammer fitted with the universal grip 100 is gripped by hand(s) of a user and operated, force from the hand is transferred from the little finger to the index finger through ring finger and middle finger of hand of the user and the force from the hand gets transferred to the universal hand grip 100. The diameter of said grip 100 of the hand tool hammer 106 is minimum near the portion gripped by the little finger and is increased gradually through the portion gripped by the ring finger, portion gripped by the middle finger and the portion gripped by the index finger of hand of the user. The stopper end 103c is provided at the end of said grip 100 to prevent sliding of the hand tool hammer 106 due to axial force applied on the grip 100 during swinging motion. The cross section of the hand tool 106 is preferably rectangular in shape.
The posterior end 101b of the first section 101 of the universal hand grip 100 is provided towards the head of the hand tool hammer. The first section 101 has a desired taper such that the diameter of the first section 101 is minimum towards the head of the hand tool hammer and this diameter increases gradually towards the anterior end 102a of the second section 102. The second section 102 is the grip portion of the universal hand grip 100 held by a user. The second section 102 has a predefined degree taper such that the anterior end 102a of the second section 102 attached to the posterior end 101b of the first section 101 has a maximum diameter and the posterior end 102b of the second section 102 attached to the anterior end 103a of the third section 103 has a minimum diameter. The posterior end 102b of the second section 102 that attaches to the anterior end 103a of the third section 103 is the section that is proximal to the little finger of the user when the user holds the hand tool hammer during operation.
The universal hand grip 100 includes a hollow section at open end 101a for gripping the end of the hand tool hammer. The diameter of the open end 101a of the universal hand grip 100 is configured according to the size and configuration of the hand tool hammer.
EXAMPLE 5
UNIVERSAL HAND GRIP FOR A TOOTHBRUSH
Now referring to Fig. 7, the present invention provides the universal hand grip 100 for a tooth brush. The universal hand grip 100 includes three sections namely 101, 102 and 103. The three sections are attached to each other by various integrated means such as but not limited to pasting, welding. When the tooth brush fitted with the universal grip 100 is gripped by hand(s) of a user and operated, force from the hand is transferred from the little finger to the index finger through ring finger and middle finger of hand of the user and the force from the hand gets transferred to the universal hand grip 100. The diameter of said grip 100 of the tooth brush is minimum near the portion gripped by the little finger and is increased gradually through the portion gripped by the ring finger, portion gripped by the middle finger and the portion gripped by the index finger of hand of the user. The stopper end 103c is provided at the end of said grip 100 to prevent sliding of the tooth brush due to axial force applied on the grip 100. The cross section of the tooth brush is preferably circular in shape.
The posterior end 101b of the first section 101 of the universal hand grip 100 is provided towards the head of the tooth brush. The first section 101 has a desired taper such that the diameter of the first section 101 is minimum towards the head of the tooth brush and this diameter increases gradually towards the anterior end 102a of the second section 102. The second section 102 is the grip portion of the universal hand grip 100 held by a user. The second section 102 also has a predefined degree taper such that the anterior end 102a of the second section 102 attached to the first section 101 has a maximum diameter and the posterior end 102b of the second section 102 attached to the anterior end 103a of the third section 103 has a minimum diameter. The posterior end 102b of the second section 102 that attaches to the anterior end 103 a of the third section 103 is the section that is proximal to the little finger of the user when the user holds the tooth brush.
EXAMPLE 6
UNIVERSAL HAND GRIP FOR A PEN
Now referring to Fig. 8, the present invention provides the universal hand grip 100 for a pen. The universal hand grip 100 includes three sections namely 101, 102 and 103. The three sections are attached to each other by various means such as but not limited to pasting, welding. When the pen fitted with the universal grip 100 is gripped by hand(s) of a user and operated, force from the hand is transferred from the little finger to the index finger through ring finger and middle finger of hand of the user and the force from the hand gets transferred to the universal hand grip 100. The diameter of said grip 100 of the pen is minimum near the portion gripped by the little finger and is increased gradually through the portion gripped by the ring finger, portion gripped by the middle finger and the portion gripped by the index finger of hand of the user. The stopper end 103c is provided at the end of said grip 100 to prevent sliding. The cross section of the pen is preferably circular in shape.
The posterior end 101b of the first section 101 of the universal hand grip 100 is provided towards the head of the pen has a finger tip arch designed ergonomically to fit exactly in finger tip arch of user and prevent the issue such as problem of children bending down close to the pen or handbook. The finger tip arch and slope of the second section 102 both are reverse to each other and hence prevent the slippage of pen while writing. The first section 101 has a desired taper such that the diameter of the first section 101 is minimum towards the head of the pen and this diameter increases gradually towards the anterior end 102a of the second section 102. The first section 101 is narrowed down to hold the nib. The second section 102 is the grip portion of the universal hand grip 100 held by a user. The second section 102 also has a predefined degree taper such that the anterior end 102a of the second section 102 attached to the first section 101 has a maximum diameter and the posterior end 102b of the second section 102 attached to the anterior end 103a of the third section 103 has a minimum diameter.
EXAMPLE 7
UNIVERSAL HAND GRIP FOR A JUG
Now referring to Fig. 9, the present invention provides the universal hand grip 100 for a jug. The universal hand grip 100 includes three sections namely 101, 102 and 103. The three sections are attached to each other by various integrated means such as but not limited to pasting, welding. When the jug handle fitted with the universal grip 100 is gripped by hand(s) of a user and operated, force from the hand is transferred from the little finger to the index finger through ring finger and middle finger of hand of the user and the force from the hand gets transferred to the universal hand grip 100. The second section 102 has a predefined degree taper such that the anterior end 102a of the second section 102 attached to the posterior end 101b of the first section 101 has a maximum diameter and the posterior end 102b of the second section 102 attached to the anterior end 103a of the third section 103 has a minimum diameter. The posterior end 102b of the second section 102 that attaches to the anterior end 103 a of the third section 103 is the section that is proximal to the little finger of the user when the user holds the jug.
EXAMPLE 8
UNIVERSAL HAND GRIP FOR A BIKE
Now referring to Fig. 10, the present invention provides the universal hand grip 100 for a bike. The universal hand grip 100 includes three sections namely 101, 102 and 103. When the bike handle is fitted with the universal grip 100 is gripped by hand(s) of a user and operated, force from the hand is transferred from the little finger to the index finger through ring finger and middle finger of hand of the user and the force from the hand gets transferred to the universal hand grip 100. The second section 102 has a predefined degree taper such that the anterior end 102a of the second section 102 has a maximum diameter and is attached to the anterior end 103 a of the third section 103 having a minimum diameter. The angle provided in the third section ensures firm grip of the handle and does not let the handle slip from hand while riding.
Therefore, the present invention provides a universal handgrip that helps in increasing the performance of the user as it allows the user to move, twist, turn, rotate easily and reduce the body effort of the user at the time of usage. The universal hand grip ensures a perfect connection with nervous system that further activates the sense of using maximum strength of hands/fmgers and body. A user’s body never loses control at any time of usage of the universal hand grip. The universal hand grip ensures that a perfect balance of body and strength is created at the time of holding the grip. Further, the universal hand grip ensures a perfect balance between upper body and lower body of the user. It allows an ergonomic hold of the universal hand grip without any compromise with uncomfortable body posture.
The foregoing description of embodiments of the invention has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed, and modifications and variations are possible in light of the above teachings or may be acquired from practice of the invention. The embodiments were chosen and described in order to explain the principals of the invention and its practical application to enable one skilled in the art to utilize the invention in various embodiments and with various modifications as are suited to the particular use contemplated.

Claims

We claim:
1. A universal hand grip (100) comprising: a first section (101) having an open end (101a) and a posterior end (101b); a second section (102) having an anterior end (102a) and a posterior end (102b); a third section (103) having an anterior end (103a) and a posterior end (103b); wherein; the posterior end (103b) of the third section (103) is extended to form a stopper end
(103c); the anterior end (102a) of the second section (102) is connected to the posterior end (101b) of the first section (101) and the posterior end (102b) of the second section (102) is connected to the anterior end (103a) of the third section (103) thus forming the hand grip
(100); the first section (101) is hollow to accommodate shaft of an equipment that extends inside the hand grip (100); the second section (102) has its outer surface with a predefined degree taper emerging from the anterior side (102a) to the posterior side (102b); the diameter of the stopper end (103c) is equal to the diameter of the anterior end (102a) of the second section (102); the length between posterior end (103b) and the anterior end (103a) of the third section (103) is equal to the diameter of the anterior end (103a) of the third section (103); the diameter of the anterior end (102a) of the second section (102) is equal to the diameter of the posterior end (101b) of the first section (101) and the diameter of the posterior end (102b) of the second section (102) is equal to the anterior end (103a) of the third section (103); the hand grip (100) transfers force exerted by hand of a user to said grip (100); the hand grip (100) optionally has an arc or an angle between the anterior end (103a) and the posterior end (103b) of the third section (103); and the hand grip (100) optionally has a V-shape protrusion on the second section (102).
2. The hand grip (100) as claimed in claim 1, wherein, the hand grip (100) is having a cross- section of a shape including but not limited to circular, rectangular, truncated square pyramidal structure, truncated rectangular pyramidal structure, brick taper, oval, egg shape.
3. The hand grip (100) as claimed in claim 1, wherein, the three sections (101, 102 and 103) are attached either by a joining method such as but not limited to gluing, welding or made continuous as a single body.
4. The hand grip (100) as claimed in claim 1, wherein, the equipment include but are not limited to single hand equipment such as but not limited to polo, all racket games like badminton, lawn tennis, table tennis, snooker, billiards etc.; two hand equipments such as but not limited to golf, cricket, hockey, etc.; three finger holding equipments such as but not limited to pen, paint brush, toothbrush etc; medical equipments such as walker, dental handpiece etc.; industrial tools such as hammer, screwdriver etc. and household items such as jug, cleaning brushes etc.
5. The hand grip (100) as claimed in claim 1, wherein, the first section (101) is preferably conical in shape.
6. The hand grip (100) as claimed in claim 1, wherein, the hand grip (100) is employed as a single hand or double hand grip to reduce the body effort of the user.
7. The hand grip (100) as claimed in claim 1, wherein, the predefined degree taper is directly proportional to the length of the grip and taper increase in length of grip per mm.
8. The hand grip (100) as claimed in claim 7, wherein, the taper increase in length is directly proportional to either average ratio of all the fingers or highest middle finger ratio taken and inversely proportional to width of single palm.
9. The hand grip (100) as claimed in claim 8, wherein the width of single palm is equal to sum of width of four fingers of the palm from little finger to index finger.
10. The hand grip (100) as claimed in claim 1, wherein, the hand grip (100) is made of a material including but not limited to hard rubber, wood, metal, plastic.
11. The hand grip (100) as claimed in claim 1, wherein, the hand grip (100) is optionally covered with a sleeve made of a material including but not limited to synthetic fibers, rubber, PVC, leather. 12. The hand grip (100) as claimed in claim 1, wherein, the V-shape protrusion is either half
V shape starting from anterior end (102a) of the second section (102) and ending at half the length of the second section (102) or full V shape starting from anterior end (102a) of the second section (102) and ending at posterior end (102b) of the second section (102). 13. A process for manufacture of customized universal grip (100), wherein said process comprises steps of: a) taking an impression of palm(s) of a user and recording details of palm(s) using a computer aided design application; b) generating a profile of palm(s) based on details of palm(s) recorded in step a); c) feeding the profile of palm(s) in a cutting/molding tool for manufacturing the customized universal grip (100); d) cutting/ molding a material for manufacturing the customized universal grip (100). 14. The process as claimed in claim 12, wherein the process either manufactures the universal grip (100) section wise or as single body for single hand and double hand users.
15. The process as claimed in claim 12, wherein the details of palm includes but are not limited to contour of palm, valleys of palm etc.
16. The process as claimed in claim 12, wherein the material includes but is not limited to wood, metal, polymer, plastic etc.
PCT/IB2020/055216 2019-10-13 2020-06-03 Universal grip for handles WO2021074704A1 (en)

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KR20090039518A (en) * 2007-10-18 2009-04-22 이선우 Grip for golf club
CN202078707U (en) * 2009-07-24 2011-12-21 上海红双喜股份有限公司 Badminton racket with plastic handle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220080271A1 (en) * 2020-09-14 2022-03-17 Timothy N. Wright Configurable golfing apparatus
US11554300B2 (en) * 2020-09-14 2023-01-17 Timothy N. Wright Configurable golfing apparatus

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