US20020065154A1 - Hockey stick - Google Patents
Hockey stick Download PDFInfo
- Publication number
- US20020065154A1 US20020065154A1 US09/929,299 US92929901A US2002065154A1 US 20020065154 A1 US20020065154 A1 US 20020065154A1 US 92929901 A US92929901 A US 92929901A US 2002065154 A1 US2002065154 A1 US 2002065154A1
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- United States
- Prior art keywords
- blade
- upper portion
- shaft
- face
- longitudinal axis
- Prior art date
- Legal status (The legal status 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 status listed.)
- Abandoned
Links
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Images
Classifications
-
- 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
- A63B59/70—Bats, rackets, or the like, not covered by groups A63B49/00 - A63B57/00 with bent or angled lower parts for hitting a ball on the ground, on an ice-covered surface, or in the air, e.g. for hockey or hurling
-
- 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
- A63B2102/24—Ice hockey
-
- 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
- A63B2209/02—Characteristics of used materials with reinforcing fibres, e.g. carbon, polyamide fibres
-
- 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
- A63B2209/02—Characteristics of used materials with reinforcing fibres, e.g. carbon, polyamide fibres
- A63B2209/023—Long, oriented fibres, e.g. wound filaments, woven fabrics, mats
-
- 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
- A63B49/02—Frames
- A63B49/10—Frames made of non-metallic materials, other than wood
- A63B49/11—Frames made of non-metallic materials, other than wood with inflatable tubes, e.g. inflatable during fabrication
-
- 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
- A63B53/02—Joint structures between the head and the shaft
-
- 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
-
- 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
- A63B60/08—Handles characterised by the material
-
- 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
- A63B60/10—Handles with means for indicating correct holding positions
Definitions
- the field of the present invention relates to hockey sticks and the blades thereof.
- hockey sticks are comprised of a blade portion and a shaft or handle portion. Traditionally, these portions were permanently joined to one another.
- the blade and shaft have been constructed in a manner that facilitates the user's replacement of the blade (i.e. the blades can be removably detached from the shaft and another blade can be attached and the removed blade can be attached to another shaft).
- the blades and shafts have been constructed, in whole or in part, using a wide variety of materials, including wood, aluminum, plastic and composite materials such as carbon, graphite, aramid, polyethylene, polyester and glass fibers.
- the blade portion is typically comprised of front and back faces, a hosel portion that extends longitudinally toward the shaft from the heel of the blade and a lower portion that extends generally perpendicular relative to the hosel portion away from the heel.
- the hosel portion of the blade employs a continuously uniform or a continuously gradually tapering cross-sectional geometry relative to and along its longitudinal axis moving from the upper portion of the hosel near the shaft toward the heel. Consequently, a uniform or gradually tapering longitudinal bending stiffness in the hosel results.
- the longitudinal bending stiffness of a member or a section of a member is the stiffness along a given longitudinal axis of the member relative to a defined direction.
- a member having a rectangular cross-sectional area has a longitudinal axis defined as Z′, a width defined as X, a height defined as Y and a length defined as L, where the width X is greater than the height Y.
- the longitudinal bending stiffness of the member illustrated in FIG. 9A in the direction X′ (which as illustrated is perpendicular to the longitudinal axis) may be measured by applying a force F to the member in the direction of X′ (i.e.
- the longitudinal bending stiffness in the Y′ direction is measured by applying a force F to the member in the Y′ direction (i.e. normal to the Z′-X′ plane) and measuring the bending of the member in that direction at a defined position of the member.
- the longitudinal bending stiffness in the X′ and Y′ directions may or may not be the same at a given section or region since the bending stiffness relates to the member's construction which is a function of the member's design, dimensions, geometry, and the properties of the materials employed.
- the longitudinal bending stiffness of a given member at a given position may vary depending on the direction in which the longitudinal bending stiffness is measured, and the stiffness at different positions may vary depending on the construction of the member at that position.
- the bending stiffness in the X′ direction is greater than the bending stiffness in the Y′ direction for the given force F (i.e.
- the member bends less in the X′ direction than in the Y′ direction of a given section when the same force F is applied).
- the assumption upon which the diagrams in FIGS. 9B and 9C are based is that all other relevant construction factors effecting the bending stiffness in the X′ and Y′ directions are equal except for the width X being greater than the height Y. Accordingly, a greater longitudinal bending stiffness should result in the X′ direction. It should be recognized, however, that the construction of the member can be modified in other respects so as to create a greater relative bending stiffness in the Y′ direction despite the width X being greater than the height Y.
- the “feel” of a hockey stick is a result of a myriad of factors including the type of materials employed in construction, the structure of the components, the dimensions of the components, the rigidity or bending stiffness of the shaft and blade, the weight and balance of the shaft and blade, the rigidity and strength of the joint(s) connecting the shaft to the blade, the curvature of the blade, etc.
- Experienced players and the public are often inclined to use hockey sticks that have a “feel” that is comfortable yet provides the desired performance.
- the subjective nature inherent in this decision often results in one hockey player preferring a certain “feel” of a particular hockey stick while another hockey player preferring the “feel” of another hockey stick.
- the hosel portion of the blade can be uniquely modified in geometry and/or bending stiffness as described in more detail below.
- the present invention relates to hockey sticks.
- a preferred embodiment relates to hockey stick blades comprising a face, an upper portion, and a lower portion.
- the upper portion having a longitudinal axis and being comprised of a defined region of reduced longitudinal bending stiffness in a direction that generally extends away from the face of the blade when measured relative to regions in the upper portion of the blade that border either side of the defined region along the longitudinal axis.
- FIG. 1 Another preferred embodiment relates to hockey sticks comprising a blade and a shaft.
- the blade is comprised of a face, an upper portion, a heel, and a lower portion.
- the upper portion having a longitudinal axis generally extending from the heel toward the shaft.
- the upper portion being comprised of a defined region of reduced longitudinal bending stiffness in a direction that generally extends away from the face of the blade when measured relative to regions in the upper portion of the blade that border either side of the defined region along the longitudinal axis.
- the blade and shaft are adapted to being joined to one another.
- Another preferred embodiment relates to hockey stick blades comprising a face, an upper portion, and a lower portion.
- the upper portion having a longitudinal axis and being comprised of a defined region having a reduced width dimension in a direction that generally extends away from the face of the blade when measured relative to regions in the upper portion of the blade that border either side of the defined region along the longitudinal axis.
- FIG. 1 In yet another preferred embodiment relates to hockey sticks comprising a blade and a shaft.
- the blade is comprised of a face, an upper portion, a heel, and a lower portion.
- the upper portion having a longitudinal axis generally extending from the heel toward the shaft.
- the upper portion being comprised of a defined region having a reduced width dimension in a direction that generally extends away from the face of the blade when measured relative to regions in the upper portion of the blade that border either side of the defined region along the longitudinal axis.
- the blade and shaft are adapted to being joined to one another.
- FIG. 1 is a diagram illustrating a hockey stick in accordance with a preferred embodiment.
- FIG. 2 is a right side view of the hockey stick blade in accordance with the embodiment set forth in FIG. 1.
- FIG. 3 is a top view of the hockey stick blade in accordance with the embodiment set forth in FIG. 1.
- FIG. 4 is a bottom view of the hockey stick blade in accordance with the embodiment set forth in FIG. 1.
- FIG. 5 is a rear view of the hockey stick blade in accordance with the embodiment set forth in FIG. 1.
- FIG. 6 is a front view of the hockey stick blade in accordance with the embodiment set forth in FIG. 1.
- FIG. 7 is a detailed rear view of the focused flex region of the hockey stick blade in accordance with the embodiment set forth in FIG. 1.
- FIG. 8A is a detailed diagram illustrating a cross-sectional view of the hockey stick blade in accordance with the embodiment set forth in FIG. 1 taken along line A-A of FIG. 7.
- FIG. 8B is a detailed diagram illustrating a cross-sectional view of the hockey stick blade in accordance with the embodiment set forth in FIG. 1 taken along line B-B of FIG. 7.
- FIG. 8C is a detailed diagram illustrating a cross-sectional view of the hockey stick blade in accordance with the embodiment set forth in FIG. 1 taken along line C-C of FIG. 7.
- FIG. 9A is a diagram illustrating a member having a longitudinal axis and comprising a rectangular cross-sectional area having width X, height Y and length L.
- FIG. 9B is a diagram illustrating the member of FIG. 9A with a force applied to the member in the X′ direction.
- FIG. 9C is a diagram illustrating the member of FIG. 9A with a force applied to the member in the Y′ direction.
- FIG. 1 is a diagram illustrating a hockey stick 10 in accordance with a preferred embodiment as disclosed herein.
- FIGS. 2 - 7 are diagrams illustrating from different perspectives and views the blade portion of the hockey stick illustrated in FIG. 1.
- a hockey stick 10 is comprised of a handle or shaft 20 and a blade 30 .
- the shaft 20 is preferably comprised of a hollow tubular member having a top section 50 , a middle section 60 and a bottom section 70 .
- the cross-sectional area of the shaft 20 is generally rectangular throughout the longitudinal length of the shaft 20 and generally employs two sets of opposed walls 21 , 22 , 23 and 24 .
- the blade 30 is comprised of a heel 80 , an upper portion 90 , a lower portion 100 and front and back faces 120 and 140 respectively.
- the heel 80 is generally defined as the angular junction between the lower portion 100 and upper portion 90 .
- the upper portion 90 in the preferred embodiment is comprised of two sets of opposed walls 31 , 32 , 33 , and 34 and a mating section 95 .
- the mating section 95 in a preferred embodiment is comprised of a rectangular cross section (also having two sets of opposed walls 31 a, 32 a, 33 a, and 34 a ) that is adapted to mate with the bottom section 70 of the shaft 20 in a four-plane lap joint along the inside of walls 21 , 22 , 23 , and 24 .
- the outside diameter of the rectangular cross-sectional area of the mating section 95 is preferably dimensioned to make a sliding fit inside the hollow center of the bottom section 70 of the shaft 20 .
- the blade 30 and shaft 20 are bonded together at the four-plane lap joint using an adhesive capable of removably cementing the blades to shafts.
- adhesives are commonly known and employed in the industry and include Z-WaxxTM and hot melt glues. Other mating configurations and methods known in the art may be used as well with the present invention.
- the blade 30 and shaft 20 may be permanently mounted to one another using construction and assembly structures and techniques known to those of ordinary skill in the art.
- the hockey stick 10 has a longitudinally extending axis 40 that extends from the top section 50 of the shaft 20 through the bottom section 70 of the shaft 20 and through the upper portion 90 of the blade 30 generally toward the heel 80 .
- the upper member 90 further comprises a focused flex region 110 , which is preferably comprised of a region of reduced longitudinal bending stiffness in a defined region of the upper portion 90 of the blade 30 .
- the stick has a reduction in longitudinal bending stiffness—or a focused flex region 110 —that gives it a higher flexibility about the axis line 200 .
- the present invention is not directed to providing increased flexibility about the axis line 130 , but rather in the direction of axis line 130 .
- stick of the present invention has a reduction in longitudinal bending stiffness—or a focused flex region 110 —that modifies the ability of the stick to flex in the general direction that extends away from the face 120 of the blade 30 (i.e in a direction generally normal to the plane defined by longitudinal axis 40 and transverse axis 200 ).
- the reduction of the bending stiffness is measured relative to the sections of the upper portion 90 of the blade 30 that immediately border either side of the focused flex region 110 moving along the longitudinal axis 40 —that is, the sections above and below the focused flex region 110 .
- the section of the upper portion 90 located above the focused flex region 110 as well as the section of the upper portion 90 of the blade 30 located below the focused flex region 110 have a longitudinal bending stiffness measured in a direction of axis line 130 that is greater than that in the focused flex region 110 .
- the reduced bending stiffness in the focused flex region 110 may be achieved by modifying the geometry of the upper portion 90 of the blade 30 .
- the widths of the two opposed walls 31 and 32 of the upper portion 90 are reduced generally in the direction of the axis line 130 so as to create a tapered, or hourglass, shape when viewed from a rear perspective as in FIG. 7.
- the reduction in the bending stiffness in the focused flex region 110 may be controlled using other construction techniques or modifications, in addition to or in combination with modifications to the geometry of the upper portion 90 .
- the upper portion 90 may be employed to achieve the relative reduction in the bending stiffness in the focused flex region 110 .
- the materials employed to construct the upper portion 90 in the focused flex region 110 may be varied either in quality (i.e. longitudinal bending stiffness properties) or quantity so as to result in a reduction of bending stiffness without necessarily changing the general structure, outer dimensions, or geometry of the upper portion 90 in the focused flex region 110 .
- the focused flex region 110 would be more readily detectable to the consumer and therefore may be advantageous from a marketing perspective.
- a modification in the outer dimensions or geometry of the upper portion 90 without change to the bending stiffness is also contemplated by the present invention.
- the focused flex region 110 is depicted in FIGS. 1 - 7 as being positioned below the rectangular cross sectional area of the mating section 95 it is contemplated that it may be placed within the this area as well.
- One advantage offered by the present invention is that it allows the stick designer to create a specific point, or area, where the stick will flex the most.
- This focused flex region 110 can be used to create a stick with a lower flex point than other sticks known in the art. This can be used to create a stick with different feel and an increased ability to generate lift on the puck—that is, to shoot the puck into the air.
- the blade 30 may be constructed of a variety of materials including wood, plastic, and composite materials such as fiberglass, carbon fiber, KevlarTM, graphite fiber, foam and other materials known to those of ordinary skill in the art. As illustrated in FIGS. 8 A- 8 C, when the blade 30 is formed of composite materials, the blade 30 may be manufactured by using a plurality of inner core pieces 160 composed preferably of compressed foam, such as polyurethane, however, other materials may also be employed such as wood, other foams and fiberglass.
- the inner core pieces 160 generally are dimensioned generally to have the external shape of the blade 30 when aligned with one another so as to be capable of fitting in a desired mold.
- Each inner core piece 160 is individually inserted into a first sleeve 170 preferably composed of a woven synthetic reinforcement material such as carbon fiber, fiberglass, KevlarTM or graphite fiber materials.
- the inner core pieces 160 having been individually inserted into the woven fiber sleeves 170 , are preferably also together enclosed into an additional woven fiber sleeve 180 preferably constructed of the same material as the first sleeve 170 .
- An additional layer of woven fiber reinforcement material 190 may also be layered between the two sets of sleeves on the top section of the blade 30 to form part of walls 31 and 31 a of the upper portion 90 and the top edge 150 of the blade 30 .
- the section may be sized to form a portion of the front 120 and rear faces 140 of the blade 30 .
- the blade assembly is then inserted into a mold having the desired shape of the blade 30 .
- a suitable matrix material or resin is then injected into mold to impregnate the woven fiber materials 170 , 180 , 190 and the blade 30 is cured.
- the molding process together with the dimensions of the inner core pieces 160 define the unique shape of the focused flex region 110 on the upper portion 90 of the blade 30 .
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Abstract
Description
- The field of the present invention relates to hockey sticks and the blades thereof.
- Generally, hockey sticks are comprised of a blade portion and a shaft or handle portion. Traditionally, these portions were permanently joined to one another. In more recent times, the blade and shaft have been constructed in a manner that facilitates the user's replacement of the blade (i.e. the blades can be removably detached from the shaft and another blade can be attached and the removed blade can be attached to another shaft). The blades and shafts have been constructed, in whole or in part, using a wide variety of materials, including wood, aluminum, plastic and composite materials such as carbon, graphite, aramid, polyethylene, polyester and glass fibers.
- The blade portion is typically comprised of front and back faces, a hosel portion that extends longitudinally toward the shaft from the heel of the blade and a lower portion that extends generally perpendicular relative to the hosel portion away from the heel. In conventional construction, the hosel portion of the blade employs a continuously uniform or a continuously gradually tapering cross-sectional geometry relative to and along its longitudinal axis moving from the upper portion of the hosel near the shaft toward the heel. Consequently, a uniform or gradually tapering longitudinal bending stiffness in the hosel results.
- The longitudinal bending stiffness of a member or a section of a member is the stiffness along a given longitudinal axis of the member relative to a defined direction. For example as illustrated in FIG. 9A, a member having a rectangular cross-sectional area has a longitudinal axis defined as Z′, a width defined as X, a height defined as Y and a length defined as L, where the width X is greater than the height Y. As illustrated in FIG. 9B, the longitudinal bending stiffness of the member illustrated in FIG. 9A in the direction X′ (which as illustrated is perpendicular to the longitudinal axis) may be measured by applying a force F to the member in the direction of X′ (i.e. normal to the Z′-Y′ plane) and measuring the bending of the member in that direction at a defined position. Alternatively, as illustrated in FIG. 9C, the longitudinal bending stiffness in the Y′ direction is measured by applying a force F to the member in the Y′ direction (i.e. normal to the Z′-X′ plane) and measuring the bending of the member in that direction at a defined position of the member.
- The longitudinal bending stiffness in the X′ and Y′ directions may or may not be the same at a given section or region since the bending stiffness relates to the member's construction which is a function of the member's design, dimensions, geometry, and the properties of the materials employed. Thus, the longitudinal bending stiffness of a given member at a given position may vary depending on the direction in which the longitudinal bending stiffness is measured, and the stiffness at different positions may vary depending on the construction of the member at that position. As illustrated in FIGS. 9B and 9C the bending stiffness in the X′ direction is greater than the bending stiffness in the Y′ direction for the given force F (i.e. the member bends less in the X′ direction than in the Y′ direction of a given section when the same force F is applied). The assumption upon which the diagrams in FIGS. 9B and 9C are based is that all other relevant construction factors effecting the bending stiffness in the X′ and Y′ directions are equal except for the width X being greater than the height Y. Accordingly, a greater longitudinal bending stiffness should result in the X′ direction. It should be recognized, however, that the construction of the member can be modified in other respects so as to create a greater relative bending stiffness in the Y′ direction despite the width X being greater than the height Y.
- The “feel” of a hockey stick is a result of a myriad of factors including the type of materials employed in construction, the structure of the components, the dimensions of the components, the rigidity or bending stiffness of the shaft and blade, the weight and balance of the shaft and blade, the rigidity and strength of the joint(s) connecting the shaft to the blade, the curvature of the blade, etc. Experienced players and the public are often inclined to use hockey sticks that have a “feel” that is comfortable yet provides the desired performance. Moreover, the subjective nature inherent in this decision often results in one hockey player preferring a certain “feel” of a particular hockey stick while another hockey player preferring the “feel” of another hockey stick.
- In order to modify the “feel” and/or performance of the hockey stick, the hosel portion of the blade can be uniquely modified in geometry and/or bending stiffness as described in more detail below.
- The present invention relates to hockey sticks. A preferred embodiment relates to hockey stick blades comprising a face, an upper portion, and a lower portion. The upper portion having a longitudinal axis and being comprised of a defined region of reduced longitudinal bending stiffness in a direction that generally extends away from the face of the blade when measured relative to regions in the upper portion of the blade that border either side of the defined region along the longitudinal axis.
- Another preferred embodiment relates to hockey sticks comprising a blade and a shaft. The blade is comprised of a face, an upper portion, a heel, and a lower portion. The upper portion having a longitudinal axis generally extending from the heel toward the shaft. The upper portion being comprised of a defined region of reduced longitudinal bending stiffness in a direction that generally extends away from the face of the blade when measured relative to regions in the upper portion of the blade that border either side of the defined region along the longitudinal axis. The blade and shaft are adapted to being joined to one another.
- Another preferred embodiment relates to hockey stick blades comprising a face, an upper portion, and a lower portion. The upper portion having a longitudinal axis and being comprised of a defined region having a reduced width dimension in a direction that generally extends away from the face of the blade when measured relative to regions in the upper portion of the blade that border either side of the defined region along the longitudinal axis.
- In yet another preferred embodiment relates to hockey sticks comprising a blade and a shaft. The blade is comprised of a face, an upper portion, a heel, and a lower portion. The upper portion having a longitudinal axis generally extending from the heel toward the shaft. The upper portion being comprised of a defined region having a reduced width dimension in a direction that generally extends away from the face of the blade when measured relative to regions in the upper portion of the blade that border either side of the defined region along the longitudinal axis. The blade and shaft are adapted to being joined to one another.
- The accompanying drawings illustrate presently preferred embodiments of the invention and, together with the description, serve to explain various principles of the invention.
- FIG. 1 is a diagram illustrating a hockey stick in accordance with a preferred embodiment.
- FIG. 2 is a right side view of the hockey stick blade in accordance with the embodiment set forth in FIG. 1.
- FIG. 3 is a top view of the hockey stick blade in accordance with the embodiment set forth in FIG. 1.
- FIG. 4 is a bottom view of the hockey stick blade in accordance with the embodiment set forth in FIG. 1.
- FIG. 5 is a rear view of the hockey stick blade in accordance with the embodiment set forth in FIG. 1.
- FIG. 6 is a front view of the hockey stick blade in accordance with the embodiment set forth in FIG. 1.
- FIG. 7 is a detailed rear view of the focused flex region of the hockey stick blade in accordance with the embodiment set forth in FIG. 1.
- FIG. 8A is a detailed diagram illustrating a cross-sectional view of the hockey stick blade in accordance with the embodiment set forth in FIG. 1 taken along line A-A of FIG. 7.
- FIG. 8B is a detailed diagram illustrating a cross-sectional view of the hockey stick blade in accordance with the embodiment set forth in FIG. 1 taken along line B-B of FIG. 7.
- FIG. 8C is a detailed diagram illustrating a cross-sectional view of the hockey stick blade in accordance with the embodiment set forth in FIG. 1 taken along line C-C of FIG. 7.
- FIG. 9A is a diagram illustrating a member having a longitudinal axis and comprising a rectangular cross-sectional area having width X, height Y and length L.
- FIG. 9B is a diagram illustrating the member of FIG. 9A with a force applied to the member in the X′ direction.
- FIG. 9C is a diagram illustrating the member of FIG. 9A with a force applied to the member in the Y′ direction.
- Reference will now be made to the construction and operations of preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The following descriptions of the preferred embodiments of the present invention are only exemplary of the invention. The present invention is not limited to these embodiments, but may be realized by other embodiments.
- FIG. 1 is a diagram illustrating a
hockey stick 10 in accordance with a preferred embodiment as disclosed herein. FIGS. 2-7 are diagrams illustrating from different perspectives and views the blade portion of the hockey stick illustrated in FIG. 1. As shown in FIGS. 1-7, ahockey stick 10 is comprised of a handle orshaft 20 and ablade 30. Theshaft 20 is preferably comprised of a hollow tubular member having atop section 50, amiddle section 60 and abottom section 70. The cross-sectional area of theshaft 20 is generally rectangular throughout the longitudinal length of theshaft 20 and generally employs two sets of opposedwalls blade 30 is comprised of aheel 80, anupper portion 90, alower portion 100 and front and back faces 120 and 140 respectively. Theheel 80 is generally defined as the angular junction between thelower portion 100 andupper portion 90. Theupper portion 90 in the preferred embodiment is comprised of two sets of opposedwalls mating section 95. Themating section 95 in a preferred embodiment is comprised of a rectangular cross section (also having two sets of opposedwalls bottom section 70 of theshaft 20 in a four-plane lap joint along the inside ofwalls mating section 95 is preferably dimensioned to make a sliding fit inside the hollow center of thebottom section 70 of theshaft 20. Preferably, theblade 30 andshaft 20 are bonded together at the four-plane lap joint using an adhesive capable of removably cementing the blades to shafts. Such adhesives are commonly known and employed in the industry and include Z-Waxx™ and hot melt glues. Other mating configurations and methods known in the art may be used as well with the present invention. Alternatively, theblade 30 andshaft 20 may be permanently mounted to one another using construction and assembly structures and techniques known to those of ordinary skill in the art. - In the preferred embodiment, the
hockey stick 10 has alongitudinally extending axis 40 that extends from thetop section 50 of theshaft 20 through thebottom section 70 of theshaft 20 and through theupper portion 90 of theblade 30 generally toward theheel 80. Theupper member 90 further comprises afocused flex region 110, which is preferably comprised of a region of reduced longitudinal bending stiffness in a defined region of theupper portion 90 of theblade 30. The stick has a reduction in longitudinal bending stiffness—or afocused flex region 110—that gives it a higher flexibility about theaxis line 200. The present invention is not directed to providing increased flexibility about theaxis line 130, but rather in the direction ofaxis line 130. Put another way, stick of the present invention has a reduction in longitudinal bending stiffness—or afocused flex region 110—that modifies the ability of the stick to flex in the general direction that extends away from theface 120 of the blade 30 (i.e in a direction generally normal to the plane defined bylongitudinal axis 40 and transverse axis 200). The reduction of the bending stiffness is measured relative to the sections of theupper portion 90 of theblade 30 that immediately border either side of thefocused flex region 110 moving along thelongitudinal axis 40—that is, the sections above and below thefocused flex region 110. Hence, the section of theupper portion 90 located above thefocused flex region 110 as well as the section of theupper portion 90 of theblade 30 located below thefocused flex region 110 have a longitudinal bending stiffness measured in a direction ofaxis line 130 that is greater than that in thefocused flex region 110. - As best illustrated in FIGS. 1 and 3-7, the reduced bending stiffness in the
focused flex region 110 may be achieved by modifying the geometry of theupper portion 90 of theblade 30. As shown in a preferred embodiment illustrated in FIGS. 1-8, the widths of the twoopposed walls upper portion 90 are reduced generally in the direction of theaxis line 130 so as to create a tapered, or hourglass, shape when viewed from a rear perspective as in FIG. 7. The reduction in the bending stiffness in thefocused flex region 110 may be controlled using other construction techniques or modifications, in addition to or in combination with modifications to the geometry of theupper portion 90. For example, internal or external structural configurations on theupper portion 90 may be employed to achieve the relative reduction in the bending stiffness in thefocused flex region 110. In addition, the materials employed to construct theupper portion 90 in thefocused flex region 110 may be varied either in quality (i.e. longitudinal bending stiffness properties) or quantity so as to result in a reduction of bending stiffness without necessarily changing the general structure, outer dimensions, or geometry of theupper portion 90 in thefocused flex region 110. - One advantage, however, that is associated with changing the outward geometry of the
upper member 90 in thefocused flex region 110 is that thefocused flex region 110 would be more readily detectable to the consumer and therefore may be advantageous from a marketing perspective. In this regard, a modification in the outer dimensions or geometry of theupper portion 90 without change to the bending stiffness is also contemplated by the present invention. Furthermore, it should be understood that while thefocused flex region 110 is depicted in FIGS. 1-7 as being positioned below the rectangular cross sectional area of themating section 95 it is contemplated that it may be placed within the this area as well. - One advantage offered by the present invention is that it allows the stick designer to create a specific point, or area, where the stick will flex the most. This
focused flex region 110 can be used to create a stick with a lower flex point than other sticks known in the art. This can be used to create a stick with different feel and an increased ability to generate lift on the puck—that is, to shoot the puck into the air. - The
blade 30 may be constructed of a variety of materials including wood, plastic, and composite materials such as fiberglass, carbon fiber, Kevlar™, graphite fiber, foam and other materials known to those of ordinary skill in the art. As illustrated in FIGS. 8A-8C, when theblade 30 is formed of composite materials, theblade 30 may be manufactured by using a plurality ofinner core pieces 160 composed preferably of compressed foam, such as polyurethane, however, other materials may also be employed such as wood, other foams and fiberglass. Theinner core pieces 160 generally are dimensioned generally to have the external shape of theblade 30 when aligned with one another so as to be capable of fitting in a desired mold. Eachinner core piece 160 is individually inserted into afirst sleeve 170 preferably composed of a woven synthetic reinforcement material such as carbon fiber, fiberglass, Kevlar™ or graphite fiber materials. Theinner core pieces 160, having been individually inserted into the wovenfiber sleeves 170, are preferably also together enclosed into an additionalwoven fiber sleeve 180 preferably constructed of the same material as thefirst sleeve 170. An additional layer of wovenfiber reinforcement material 190 may also be layered between the two sets of sleeves on the top section of theblade 30 to form part ofwalls upper portion 90 and thetop edge 150 of theblade 30. The section may be sized to form a portion of the front 120 andrear faces 140 of theblade 30. The blade assembly is then inserted into a mold having the desired shape of theblade 30. A suitable matrix material or resin is then injected into mold to impregnate the wovenfiber materials blade 30 is cured. In the illustrated preferred embodiment, the molding process together with the dimensions of theinner core pieces 160 define the unique shape of thefocused flex region 110 on theupper portion 90 of theblade 30. - While there has been illustrated and described what are presently considered to be preferred embodiments and features of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made, and equivalents may be substituted for elements thereof, without departing from the scope of the invention.
- In addition, many modifications may be made to adapt a particular element, feature or implementation to the teachings of the present invention without departing from the central scope of the invention. Therefore, it is intended that this invention not be limited to the particular embodiments disclosed herein, but that the invention include all embodiments falling within the scope of the appended claims.
Claims (4)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US09/929,299 US20020065154A1 (en) | 2000-01-07 | 2001-08-14 | Hockey stick |
US11/318,326 US7144343B2 (en) | 2000-01-07 | 2005-12-23 | Hockey stick |
US11/484,339 US7422532B2 (en) | 2000-01-07 | 2006-07-10 | Hockey stick |
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US47942900A | 2000-01-07 | 2000-01-07 | |
US09/929,299 US20020065154A1 (en) | 2000-01-07 | 2001-08-14 | Hockey stick |
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US11/318,326 Continuation US7144343B2 (en) | 2000-01-07 | 2005-12-23 | Hockey stick |
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US11/484,339 Expired - Lifetime US7422532B2 (en) | 2000-01-07 | 2006-07-10 | Hockey stick |
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US11/484,339 Expired - Lifetime US7422532B2 (en) | 2000-01-07 | 2006-07-10 | Hockey stick |
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2001
- 2001-01-03 CA CA2330083A patent/CA2330083C/en not_active Expired - Lifetime
- 2001-08-14 US US09/929,299 patent/US20020065154A1/en not_active Abandoned
-
2005
- 2005-12-23 US US11/318,326 patent/US7144343B2/en not_active Expired - Lifetime
-
2006
- 2006-07-10 US US11/484,339 patent/US7422532B2/en not_active Expired - Lifetime
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US20060142100A1 (en) * | 2003-03-13 | 2006-06-29 | Pearson Robert T | Durable high performance hockey stick |
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US20050164814A1 (en) * | 2004-01-09 | 2005-07-28 | Tucker Richard B.Sr. | Field hockey stick having a top weighted head |
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US20060019777A1 (en) * | 2004-07-26 | 2006-01-26 | Quikstick Lacrosse, Llc | Lacrosse stick |
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US20060090838A1 (en) * | 2004-10-28 | 2006-05-04 | Alain Bellefleur | Method of making a formable hockey stick blade |
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US7377865B2 (en) * | 2005-11-18 | 2008-05-27 | Stx, Llc | Bowed field hockey stick |
US20070129187A1 (en) * | 2005-11-18 | 2007-06-07 | Katelyn Bedwell | Bowed field hockey stick |
JP2019136970A (en) * | 2018-02-13 | 2019-08-22 | 三菱重工業株式会社 | Method for manufacturing composite material and composite material |
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US11383460B2 (en) | 2018-02-13 | 2022-07-12 | Mitsubishi Heavy Industries, Ltd. | Method for producing composite material |
Also Published As
Publication number | Publication date |
---|---|
US7422532B2 (en) | 2008-09-09 |
US7144343B2 (en) | 2006-12-05 |
US20060287142A1 (en) | 2006-12-21 |
CA2330083A1 (en) | 2001-07-07 |
CA2330083C (en) | 2010-04-13 |
US20060100044A1 (en) | 2006-05-11 |
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