WO2014199111A2 - Canne de golf - Google Patents

Canne de golf Download PDF

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Publication number
WO2014199111A2
WO2014199111A2 PCT/GB2014/000223 GB2014000223W WO2014199111A2 WO 2014199111 A2 WO2014199111 A2 WO 2014199111A2 GB 2014000223 W GB2014000223 W GB 2014000223W WO 2014199111 A2 WO2014199111 A2 WO 2014199111A2
Authority
WO
WIPO (PCT)
Prior art keywords
club head
golf club
ball striking
striking surface
golf
Prior art date
Application number
PCT/GB2014/000223
Other languages
English (en)
Other versions
WO2014199111A3 (fr
Inventor
Calum MCPHERSON
Original Assignee
Golphin Limited
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 Golphin Limited filed Critical Golphin Limited
Priority to US14/762,163 priority Critical patent/US20160082324A1/en
Priority to CN201480042184.6A priority patent/CN105407988A/zh
Priority to EP14734532.6A priority patent/EP3007783A2/fr
Publication of WO2014199111A2 publication Critical patent/WO2014199111A2/fr
Publication of WO2014199111A3 publication Critical patent/WO2014199111A3/fr

Links

Classifications

    • 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
    • A63B53/04—Heads
    • A63B53/047—Heads iron-type
    • 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
    • A63B53/04—Heads
    • A63B53/0408—Heads characterised by specific dimensions, e.g. thickness
    • 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
    • A63B53/04—Heads
    • A63B53/0416—Heads having an impact surface provided by a face insert
    • A63B53/042—Heads having an impact surface provided by a face insert the face insert consisting of a material different from that of the head
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
    • A63B71/0036—Accessories for stowing, putting away or transporting exercise apparatus or sports equipment
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2208/00—Characteristics or parameters related to the user or player
    • A63B2208/12—Characteristics or parameters related to the user or player specially adapted for children
    • 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
    • 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
    • A63B53/005—Club sets
    • 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
    • A63B53/04—Heads
    • A63B53/0433—Heads with special sole configurations
    • 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
    • A63B53/04—Heads
    • A63B53/0445—Details of grooves or the like on the impact surface

Definitions

  • the present invention relates to a novel golf club design which is particularly suitable for use by junior players such as those in the age group around 4 to 11 and ladies .
  • the present invention may be used by golfers whose physical condition prevents or impedes them from properly controlling their golf swing with standard golf clubs.
  • the game of golf is extremely popular across the world and is played by people of all ages and abilities. As with many sports, there is a benefit to the player if they learn how to play at an early age when a child's enthusiasm, ability to learn and physical development make it a better time to learn how to swing a golf club rather than when a person is an adult.
  • Stage 1 under-7 and under-8 which is called Mini Tag rugby;
  • Stage 2 under-9 and under-10 which is called Mini rugby;
  • Stage 3 under-11 and under-12 which is called Midi Rugby.
  • the main differences relate to the size of the pitch, number of players in a team, the way in which points are scored and the amount of physical contact allowed between players in opposing teams.
  • an iron-type golf club head comprising:
  • a front ball striking surface which has a face positioned between a heel which is connected to the neck and a toe which is at the free end of the ball striking surface an opposing rear surface;
  • an iron-type golf club head comprising:
  • a front ball striking surface which has a face positioned between a heel which is connected to the neck and a toe which is at the free end of the ball striking surface an opposing rear surface;
  • an iron-type golf club head comprising:
  • a front ball striking surface which has a face positioned between a heel which is connected to the neck and a toe which is at the free end of the ball striking surface an opposing rear surface;
  • the front ball striking surface comprises a recessed area into which is fixedly attached a separately formed insert which comprises the face.
  • the club head is constructed from a lightweight non-ferrous metal alloy or other material of a suitable density.
  • the alloy has a density of 2g/cm 3 to 3 g/cm 3 .
  • the alloy has a density of 2.6 g/cm 3 to 2.7 g/cm 3 .
  • the lightweight non-ferrous metal alloy is an aerospace alloy.
  • the lightweight non-ferrous metal alloy is a hard anodised aluminium alloy
  • the lightweight non-ferrous metal alloy is a non anodised aluminium alloys.
  • the use of the lightweight non-ferrous metal alloy allows the head to have the required strength and hardness but allows the club head to be significantly lighter than the typical golf club head known in the art made of steel alloys.
  • the use of the lightweight non-ferrous metal alloy allows the head to have the required strength and hardness but allows the club head to be significantly larger than the typical golf club head known in the art made of steel alloys.
  • the lightweight non-ferrous metal alloy is less dense than the type of steel allow which is typically used for making golf club heads.
  • the alloy is ASTM 356X Aluminium Alloy.
  • the alloy is a LM25 TF Aluminium Alloy.
  • the alloy is LM6 Aluminium Alloy
  • the opposing rear surface comprises a cavity back.
  • the sole of the club is shaped to allow the club to be grounded at an angle up to 60° to the vertical.
  • the leading edge and sole of the club are curved along the length of the ball striking surface in a direction upwards towards the ball striking surface.
  • the curve of the leading edge and sole of the club towards the ball striking surface in a direction along the ball striking surface has an average radius of curvature of between 70 and 150.
  • the sole of the club is curved upwards towards the ball striking surface from the leading edge to the opposing rear face.
  • the curve of the sole of the club is curved upwards towards the ball striking surface from the leading edge to the opposing rear face varies along the length of the club head from heel to toe.
  • the club has a volume which is between 15% and 45% greater than that of a standard steel alloy iron type golf club head.
  • the club has a sweet spot which is between 15% and 45% greater than that of a standard iron type steel alloy golf club head.
  • the club head density is between 40% and 80% of that of a standard iron type steel alloy golf club head.
  • the golf club heads are for use in golf clubs designed to coach a person, particularly a young person and/or adult ladies to play golf.
  • the golf club heads are for use in golf clubs designed to assist those afflicted with physical constraints to play golf.
  • the front ball striking surface comprises a recessed area into which is fixedly attached a separately formed insert which comprises the face.
  • the insert can be made of stainless steel, titanium or other similar materials.
  • the face comprises a plurality of laterally extending substantially parallel grooves which extend across the face of the club into the toe.
  • the grooves are cast into the club head.
  • the grooves are machined into the club head.
  • the grooves have a curved cross section.
  • the grooves are configured in accordance with R&A and/or USGA regulations.
  • the insert has a thickness of between 2 mm and 8 mm
  • the insert has a lengths of 60 mm to 90 mm in accordance with the overall club head dimensions
  • the insert has a heights of 50 to 75 mm through the centre line of the club in accordance with the overall club head size.
  • a progressive set of iron type golf club heads constructed in accordance with the first aspect or second aspect of the present invention.
  • the progressive set contains at least three of the following golf club heads: a 5 iron; a 6 iron; a 7 iron; an 8 iron; a 9 iron; a wedge and a sand wedge
  • the progressive set of golf club heads are for use in golf clubs designed to coach a person, particularly a young person and/or ladies to play golf.
  • the progressive set of golf club heads are for use in golf clubs designed to assist those afflicted with physical constraints to play golf.
  • Figure 1 is a diagram which shows the general shape and appearance of a known iron type golf club
  • Figure 2 is a side view of the face of a known type of cavity backed iron type golf club
  • Figure 3 is a perspective view of the back and sole of a cavity backed iron type golf club head
  • Figure 4a is a front view of a cavity backed iron type golf club head in accordance with the present invention and figure 4b is a side view along lines B-B of the golf club head of figure 4a;
  • Figure 5a is a front view of a cavity backed iron type golf club head in accordance with the present invention and figures 5b to 5e are cross section view along lines B-B C-C, D-D and E-E respectively of the golf club head of figure 5a
  • Figure 6 is a rear view of an embodiment of the cavity backed iron type golf club head in accordance with the present invention.
  • Figure 7 is a rear view of another embodiment of the cavity backed iron type golf club head in accordance with the present invention.
  • Figure 8 is a rear view of another embodiment of the cavity backed iron type golf club head in accordance with the present invention.
  • Figure 9 is an illustration of an example of a golf club which incorporates a golf club; and
  • Figure 10a is a front view of another embodiment of the present invention, figure 10b is a side view of the embodiment of figure 10a and figure 10c shows a similar embodiment where the recess and insert have a tapered edge Detailed Description of the Drawings
  • the present invention provides an improved golf club head which is for use in a golf club.
  • the club head of the present invention will be described in the context of known types of golf clubs and in particular cavity backed golf clubs.
  • FIG 1 is an illustration of a known type of golf club which is of a standard type and appearance.
  • the golf club 1 comprises a shaft 5 upon which is situated a grip 3.
  • the grip 3 is used by the golfer to hold and control the club with both hands during the golf swing.
  • the shaft 5 extends from the grip 3 at the top of the golf club 1 to the club head 7 located at the bottom of the shaft 5.
  • the shaft 5 is connected to the club head 9 by a tubular extension of the club head 9 called the neck or hosel 17.
  • FIG 2 is a front view illustration of a known type of cavity backed iron type golf club head 10.
  • the front view of the golf club head 10 shows the ball striking surface 12 and the hosel 17.
  • the ball striking surface 12 comprises a toe 13 at the free end of the ball striking surface, a heel 15 beside the hosel 17.
  • the club face 9 is situated between the heel 15 and the toe 13 and comprises a series of closely spaced laterally extending grooves 16.
  • the purpose of the grooves 16 is to grip the ball upon impact, to provide better control of the flight of the ball and to create backspin.
  • the grooves are markedly larger than conventional iron heads to reduce side spin, meaning the ball flies straighter
  • the grooves 16 also define the area of the club face 9 that should be beside the golf ball when a golfer is addressing the ball before taking a golf shot.
  • the face 9 defines the area within which the "sweet spot" on the golf club head is found. The sweet spot if the place where the weight distribution and geometry of the golf club head create a position at which the maximum response of a golf ball is achieved for a given amount of effort.
  • the leading edge 18 is at the lower end of the ball striking surface 12 is the point on the club which first contacts the ball or ground below the ball when a golf shot is made.
  • the top edge 20 is at the upper end of the ball striking surface 12.
  • Figure 3 is a perspective view of the back and sole of a known type of cavity backed iron-type golf club.
  • Figure 3 shows the lower portion of a golf club 21 with a shaft 23 and a club head 25 connected to the shaft 23.
  • the club head 25 has a sole 27 which is a substantially flat and linear portion of the club head which should be on the ground when the golfer is addressing the ball.
  • the sole 27 projects rearwards from the leading edge on the front of the golf club head 25 beyond the cavity back 29.
  • the purpose of this design is to create a lower centre of mass and higher moment of inertia, making it easier to hit the golf ball and causing the ball to fly further.
  • the substantially flat sole 27 is significantly thicker than the cavity back.
  • Figures 4a and 4b are drawings which illustrate a first embodiment of an iron type golf club head in accordance with the present invention.
  • Figure 4a shows a golf club head 31 which comprises a ball striking surface 33 having a heel 35 which is connected to a hosel 37.
  • the golf club head is constructed in an investment casting process (also known as a lost wax process) and/or gravity die cast, low pressure die cast or high pressure die cast, from an aerospace standard aluminium allow such as a hard anodised aluminium alloy.
  • the face 39 is part of the striking surface and contains a number of laterally arranged, vertically spaced grooves 43 which have a curved cross section as shown in figure 4B.
  • the grooves extend onto the toe of the club head 31. Accordingly, the area of the ball striking surface 33 which is designed to strike the ball is larger relative to the overall surface area of the ball striking surface than is known in the art, where the toe area should not be used for striking the ball.
  • Figure 4b is a cross section of the golf club head of figure 4a at position BB.
  • the substantially curved cross section of the grooves 43 is shown.
  • the grooves 43 are vertically spaced and extend down the face 39 of the club from near the top edge 47 to near the leading edge 41.
  • the cavity 53 is defined by a protrusion 54 extending rearwards from the top edge of the ball striking surface and by a similar protrusion 56 which extends rearwards from the leading edge 41 of the ball striking surface.
  • the thickness of the club head as defined by the distance between the ball striking surface and the opposing rear surface which contains the protrusions 54, 56 and the cavity back 53, increases uniformly towards the sole 55 of the golf club head to create a wedge shape within the cavity when seen in cross section; he cavity 53, being a recess between protrusions 54 and 56.
  • the golf club head is shaped such that weight is distributed to lower the centre of gravity and increase the moment of inertia.
  • head size and its sweet spot is around 35 % larger than that of standard golf clubs for children and is around 35% lighter.
  • a typical set of irons might comprise a 5 iron, 7 iron and a wedge although other combinations such as a 5 iron, 8 iron and a wedge or a 5 iron, 6 iron, 8 iron, 9 iron a wedge and a sand wedge are foreseen depending upon the purchaser and the golfer's requirements.
  • Figure 5a is a front view of the golf club head 31 shown in figures 4a and 4b but which shows the shape of the cavity back (dashed lines ) 61.
  • the edge of the cavity back 62 nearer the leading edge 41 follows a smooth curve whereas the edge of the cavity back nearer upper edge 47 has an undulating shape 64.
  • Cross sectional views at points A, B, C and D are shown in figures 5b, 5c, 5d and 5e respectively.
  • the uniform wedge shape in cross section is shown as defined by the shape of the cavity with respect to protrusions 54 and 56. This feature is less apparent in figure 5e where the cross section is towards the toe of the club head.
  • the leading edge 41 of the golf club head and the sole contain a substantial degree of curvature in comparison with standard cavity backed iron type golf club heads.
  • the leading edge may have an average radius of curvature of between 70 and 150.
  • the radius of curvature on the sole of the club may be defined at different points along the leading edge and around the club head 31.
  • Figure 6 is a drawing of the opposing rear surface of a golf club 81 in accordance with the present invention.
  • the edge of the cavity back 85 nearer the leading edge 83 follows a smooth curve whereas the edge of the cavity back 89 nearer upper edge 87 has an undulating shape.
  • Figure 7 of the present invention shows an embodiment of the present invention in which the edge of the cavity back 95 nearer the leading edge 93 and the edge of the cavity back 99 nearer upper edge 97 follow a smooth curve.
  • Figure 8 shows an alternative embodiment of the present invention 101 in which the edge of the cavity back nearer the leading edge follows an undulating shape whereas the edge of the cavity back nearer upper edge has a smooth curve 64.
  • the position of the undulations in this example of the present invention provide a finger grip which makes the club head easier to hold, especially when wet.
  • Figure 9 shows a golf club made in accordance with the present invention, the golf club 111 comprising a shaft 113, a grip 115 and a head 117 made in accordance with the present invention.
  • the golf club 111 comprising a shaft 113, a grip 115 and a head 117 made in accordance with the present invention.
  • embodiments of the present invention can be over 15% lighter than standard child golf clubs and they can be at least 15% larger.
  • head size and its sweet spot is around 35 % larger and the head is circa 35 % lighter than a standard type. This produces significant advantages to a child and a lady golfer who will find it easier to swing the club in a controlled manner control the club because the head is lighter and to swing the golf club more freely which helps to generate more club head speed and allows for maximum distance on each shot.
  • the iron type golf club head is cast in an investment casting process from an aerospace aluminium alloy ASTM 356.
  • ASTM 356 This is a high grade alloy with excellent to strength to weight ratio, hardness, and corrosion resistance etc.
  • One alternative alloy is LM25 TF
  • Other casting processes such as casting processes, such as gravity diecast or high pressure die casting can be used.
  • 3 iron types will be created for 3 to 6 year old (stage 1) golfers namely a 5 iron, 7 iron and a wedge.
  • stage 2 The same suite of irons for 6 to 9 year old (stage 2) golfers will be created from a zinc/aluminium alloy at circa 15 % lighter and 15 % larger in head size and sweet spot than "normal" kids clubs.
  • the shorter, lighter shafts which may be used allow the child golfer to have better posture and setup over the ball. It also encourages better contact with the ball instead of hitting or digging into the turf. Also, higher or easier lofted woods and irons make it much simpler for the kids to get the ball up into the air while
  • the shaft may comprise a 0.370 inch tip, graphite shaft with a ladies or regular type flex.
  • Several shaft lengths may be used therefore, the butt end of the shaft has to be large enough at the shortest length and big enough at the longest length to fit into the club head.
  • Figure 10a is another embodiment of an iron type golf club head in accordance with the present invention.
  • Figure 10a shows a golf club head 121 which comprises a ball striking surface 123 having a heel 125 which is connected to a hosel 127 a leading edge 131 and a top edge137.
  • the golf club head is constructed in two parts.
  • the golf club head 121 is constructed with a recess 128 in an investment casting process (also known as a lost wax process) and/or gravity die cast, low pressure die cast or high pressure die cast, from an aerospace standard aluminium allow such as a hard anodised aluminium alloy.
  • the face 129 of the ball striking surface 123 is formed as a separate component from the remainder of the club head 121 and comprises an insert 129 which fits into the recessed section 128 of the ball striking surface so that the face 129 is flush with the ball striking surface of the club in the usual way.
  • the insert 129 is made from stainless steel, titanium or other suitable material which is harder and of higher density than the remainer of the club head.
  • the face contains a number of laterally arranged, vertically spaced grooves 133 which comply equipment standards as set out by Royal and Ancient Golf Club (R and A) and /or the United States Golf Association (USGA). These standards specify dimensions such as groove shape, depth, width and length.
  • R and A Royal and Ancient Golf Club
  • USGA United States Golf Association
  • this embodiment of the invention may be used by those wishing to progress from junior golf towards full adult clubs because they combine a reduction in club head weight with the prescribed groove dimensions on the club face. They may also be used by those wo, for whatever reason, wish to use a lighter iron-type golf club.
  • the insert 129 may be fixed in position in the recess 128 using a suitable adhesive such as an Aerospace standard adhesive. As illustrated in figure 10b, the adhesive may be applied to the surface of the recess or the rear surface of the insert.
  • Figure 10c is a side view of another embodiment of the invention 221 in which the opposing side surfaces of the recess 228 and the insert 229 are tapered such that a when in position, the opposing surfaces form a physical barrier which prevents outward movement of the insert.
  • An adhesive or other mechanical fixing may also be applied to secure the insert in position.
  • the present invention assists young golfers with the transition from "baby plastic” clubs to the lightest and biggest stage 1 clubs then to stage 2 clubs towards the age of 10 when the young golfers will progress towards the use of golf clubs which conform to the standard R and A specification.
  • the radial shape to the base profile of the club which allows for a variable lie of the club on the ground accommodating different heights of young golfer 2.
  • the tapered, wedge shape wall thickness of the clubs through the cross section which gets thicker towards the bottom of the club thus propelling the ball in a higher trajectory.
  • the present invention is geared to make the transition from plastic clubs and softballs a much less painful experience and at the same time encourage more young players to persevere with golf. Improvements and modifications may be incorporated herein without deviating from the scope of the invention.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Golf Clubs (AREA)

Abstract

L'invention concerne une tête de canne de golf du type fer, qui comprend une surface de frappe de balle avant ayant une face positionnée entre un talon qui est relié au hosel et une pointe qui est au niveau de l'extrémité libre de la surface de frappe de balle, une surface arrière opposée, un bord avant au niveau de l'extrémité inférieure de la surface de frappe de balle, un bord supérieur au niveau de l'extrémité supérieure de la surface de frappe de balle, et une base placée au niveau de la partie inférieure de la tête de canne qui s'étend vers l'arrière de la surface de frappe de balle à la surface arrière opposée. La tête de canne de golf peut avoir diverses caractéristiques qui réduisent le poids de la canne par comparaison avec des cannes de golf standard, et qui les rendent plus facile à utiliser par des joueurs de golf débutants et des personnes qui manquent de force ou qui ont perdu de la force dans les mains et les bras. L'invention comprend la construction de la tête de canne à partir d'un d'alliage métallique non-ferreux léger ou d'un autre matériau d'une densité appropriée, la création d'une courbe accentuée au niveau du bord avant et de la base de la canne, et la réalisation d'un insert pondéré qui forme la face de canne et est placé dans une zone renfoncée formée sur le reste de la tête de canne de golf.
PCT/GB2014/000223 2013-06-10 2014-06-10 Canne de golf WO2014199111A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US14/762,163 US20160082324A1 (en) 2013-06-10 2014-06-10 Golf club
CN201480042184.6A CN105407988A (zh) 2013-06-10 2014-06-10 高尔夫球杆
EP14734532.6A EP3007783A2 (fr) 2013-06-10 2014-06-10 Canne de golf

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB1310278.5A GB201310278D0 (en) 2013-06-10 2013-06-10 Golf club
GBGB1310278.5 2013-06-10

Publications (2)

Publication Number Publication Date
WO2014199111A2 true WO2014199111A2 (fr) 2014-12-18
WO2014199111A3 WO2014199111A3 (fr) 2015-02-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2014/000223 WO2014199111A2 (fr) 2013-06-10 2014-06-10 Canne de golf

Country Status (5)

Country Link
US (1) US20160082324A1 (fr)
EP (1) EP3007783A2 (fr)
CN (1) CN105407988A (fr)
GB (1) GB201310278D0 (fr)
WO (1) WO2014199111A2 (fr)

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CN108261740A (zh) * 2018-03-29 2018-07-10 隆回县三百运动用品有限公司 一种高尔夫球杆头
CN111167093A (zh) * 2020-03-02 2020-05-19 南京佑天金属科技有限公司 一种高尔夫球杆头
KR102519324B1 (ko) * 2021-11-08 2023-04-06 파슨스 익스트림 골프, 엘엘씨 골프 클럽 헤드 및 골프 클럽 헤드 제조 방법

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GB201310278D0 (en) 2013-07-24
WO2014199111A3 (fr) 2015-02-05
CN105407988A (zh) 2016-03-16
US20160082324A1 (en) 2016-03-24
EP3007783A2 (fr) 2016-04-20

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