EP2701810B1 - Hockey stick - Google Patents

Hockey stick Download PDF

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Publication number
EP2701810B1
EP2701810B1 EP12703600.2A EP12703600A EP2701810B1 EP 2701810 B1 EP2701810 B1 EP 2701810B1 EP 12703600 A EP12703600 A EP 12703600A EP 2701810 B1 EP2701810 B1 EP 2701810B1
Authority
EP
European Patent Office
Prior art keywords
hockey stick
inlay
hook
main body
stick according
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.)
Active
Application number
EP12703600.2A
Other languages
German (de)
French (fr)
Other versions
EP2701810A1 (en
Inventor
Nikolaï Rolf CARELS
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Princess Sportsgear & Traveller BV
Original Assignee
Princess Sportsgear & Traveller BV
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 Princess Sportsgear & Traveller BV filed Critical Princess Sportsgear & Traveller BV
Publication of EP2701810A1 publication Critical patent/EP2701810A1/en
Application granted granted Critical
Publication of EP2701810B1 publication Critical patent/EP2701810B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
    • 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
    • A63B60/0081—Substantially flexible shafts; Hinged shafts
    • 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
    • A63B71/0054—Features for injury prevention on an apparatus, e.g. shock absorbers
    • A63B2071/009—Protective housings covering the working parts of the apparatus
    • 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
    • A63B2102/22—Field hockey
    • 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

Definitions

  • the present invention relates to a hockey stick provided with one or more inlays of an elastomeric material, such as a synthetic or natural rubber.
  • Hockey sticks must have sufficient strength to withstand mechanical impacts during play. To this end it has been proposed to apply a protective rubber coating to the shaft or blade of hockey sticks.
  • WO 2005/082470 discloses an ice hockey stick with shaft edges provided with elastomeric bumpers. With some of the disclosed embodiments the elastomeric bumper is formed by a layer extending over the width of a side face of the stick at the grip. WO 2005/082470 also discloses an embodiment with a fully rubber coated cylindrical grip.
  • the object of the present invention is an object of the present invention to balance impact strength of the hockey sticks' main body with sufficient damping properties of the inlays. It is a further object of the invention to provide a hockey strick with improved ball control and improved damping of vibrations caused by impact loads during play. Preferably, the stick should enable more convenient and more controllable ball acceptance.
  • the object of the invention is achieved with a hockey stick according to appended claim 1.
  • the inlay main body can for instance extend over at least a part of a side edge of the shaft and/or a field contact zone of the hook. It has been found that due to this thickness gradient and due to the side webs the inlay can be made such that impact damping by the inlay is substantially enhanced locally without substantially affecting the impact strength of the sticks' core material.
  • Such an inlay has a U-shaped or J-shaped cross section gripping around part of the shaft.
  • the thick inlay main body effectively protects the side edge of the shaft, while the thinner webs contribute to a better attachment of the inlay to the shaft.
  • the side webs can have a constant thickness.
  • the inlay main body can be provided with a curved outer surface.
  • the contact surface contacting the opposed surface of the hockey stick can be flat.
  • the inlay main body may for instance cover at least the lower section of the shaft side edge facing the hook. This part of the hockey stick can particularly be exposed to impact loads during play, e.g., with back hand shots.
  • the inlay comprises a field contact section extending over at least a part of a field contact zone of the hook.
  • Such a field contact section of the inlay may for example have a gradually varying thickness, e.g., the thickness may gradually be reduced in the direction of the side webs. This results in a more convenient contact between the hook and the field during play.
  • the inlays can have two or more inlay main bodies.
  • the inlay comprises a first inlay main body covering at least the lower section of the shaft side edge facing the hook, and a second inlay main body covering at least a field contact zone of the hook, wherein the inlay comprises a web extending over the back face of the hockey stick to connect both inlay main bodies and wherein the web has a lesser thickness than the inlay main bodies.
  • the web connecting the two inlay main bodies can for example cover at least the back side of the hook.
  • the inlay main body has a thickness of 1 - 5 mm, e.g., about 2,5 - 3, 5 mm, whereas the side extensions have a thickness of 0,5 - 2 mm, e.g., about 0,8 - 1,2 mm. Other thicknesses can also be used, if so desired.
  • the inlays can be shaped to be flush with the surface of the hockey stick, if so desired. This can for example be achieved by positioning the inlay in a matching recess in the hockey stick.
  • the inlays are made of an elastomeric material, for example, thermoset elastomeric urethane, thermoset elastomeric dicyclopentadiene, thermoplastic elastomers, thermoplastic urethanes, or thermoplastic rubbers, such as styrene modified thermoplastic rubbers. Good results are obtained with 2K thermoplastic rubbers, e.g., having a Shore hardness of 90 or more. Fiber reinforced rubber, such as carbon rubber, can also be used.
  • some parts of the inlay can be made of a different elastomeric material than the rest of the inlay. For instance, an inlay section covering a field contact zone of the hook may be made of an elastomer, e.g., a thermoplastic rubber with a higher hardness. This is to reduce wear and to reduce slowing down of the stick by field contact.
  • the inlay or inlays can be applied on the hockey stick by directly moulding the inlays onto the stick, for instance by reaction injection moulding.
  • adhesives can be used to fixate the inlay(s).
  • Other suitable techniques can also be used, if so desired.
  • the invention is particularly suitable for use with field hockey sticks of a fiber reinforced composite material, but can also be used for other types of field or ice hockey sticks if so desired.
  • FIG. 1 and 2 shows a hockey stick 1, e.g., made of a fibre reinforced composite material.
  • the hockey stick 1 has a flat front side 2, a convex back side 3, and two rounded longitudinal edges 4, 5 joining and spacing the front and back sides 2, 3.
  • the hockey stick 1 has a substantially cylindrical grip (not shown) at its top end, a hook 6 at its lower end, and a shaft 7 extending between the hook and the grip. From grip to hook the front side of the shaft 7 grip gradually flattens, while the back side 3 remains rounded.
  • the hockey stick 1 comprises an inlay 10 of an elastomeric material, such as a thermoplastic rubber.
  • the inlay 10 comprises an inlay main body 11 with a thickness varying from a maximum of about 3 mm to a minimum of about 1 mm.
  • the main body 11 extends along a major part of the longitudinal edge 5 of the shaft 7 facing the hook 6.
  • Over the length of the inlay main body 11 the inlay 10 has a U-shaped cross section, with a back web 12 extending over about half the width of the back face, and a front web 13 extending over almost the full flat front side 2.
  • the back web 12 and the front web 13 have a thickness of about 1 mm.
  • the back web 12 and the inlay main body 11 of the inlay 10 stop near the hook 6.
  • the front web 13 also comprises a section 14 which extends over the flat front side of the hook 6 to provide improved ball control. This section 14 of the front web 13 can have a larger thickness than the other parts of the front web 13.
  • the inlay 10 is sunk in a correspondingly shaped recess 15 in the hockey stick 1.
  • the depth of the recess 15 is such that the inlay 10 is fully flush with the hockey stick surface.
  • the transition between the inlay main body 11 and the front and back webs 12, 13 is not visible from the outside when the inlay is attached within the recess 15.
  • FIG. 5 - 9 show a second embodiment of a hockey stick 20.
  • the hockey stick 20 comprises an inlay 21 of varying thickness positioned in a matching recess in the hickey stick 20.
  • the inlay 21 comprises a first inlay main body 22 covering the lower section 23 of the shaft side edge facing the hook 24, and a second inlay main body 25 covering at least a field contact zone 26 of the hook 24.
  • the second inlay main body 25 may be made of a harder material than the first inlay main body 21.
  • the inlay 21 also comprises a web 27 of an essentially constant thickness extending over the front face 28 of the hockey stick 20 to connect both inlay main bodies 22, 25.
  • a side web 29 extends over a part of the back side 30 of the shaft with a curved outline 31.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Laminated Bodies (AREA)
  • Golf Clubs (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Description

  • The present invention relates to a hockey stick provided with one or more inlays of an elastomeric material, such as a synthetic or natural rubber.
  • Hockey sticks must have sufficient strength to withstand mechanical impacts during play. To this end it has been proposed to apply a protective rubber coating to the shaft or blade of hockey sticks.
  • WO 2005/082470 , for instance, discloses an ice hockey stick with shaft edges provided with elastomeric bumpers. With some of the disclosed embodiments the elastomeric bumper is formed by a layer extending over the width of a side face of the stick at the grip. WO 2005/082470 also discloses an embodiment with a fully rubber coated cylindrical grip.
  • Physical properties of the shaft material limit the maximum thickness of the shaft. Therefore, thicker elastomeric inlays result in thinner shaft cores and, consequently, lower impact resistance. This is particularly the case with field hockey sticks of fibre reinforced materials. Therefore, with the system of WO 2005/082470 only relatively thin elastomeric bumpers can be used at the shaft edges. It has in practice been found that this does not result in satisfactory protection, particularly with forehand shots and backhand shots imparting the shaft at the edge facing the blade. Such impact loads form a major cause of damage or even breaking of hockey stick shafts.
  • It is an object of the present invention to balance impact strength of the hockey sticks' main body with sufficient damping properties of the inlays. It is a further object of the invention to provide a hockey strick with improved ball control and improved damping of vibrations caused by impact loads during play. Preferably, the stick should enable more convenient and more controllable ball acceptance.
    The object of the invention is achieved with a hockey stick according to appended claim 1. The inlay main body can for instance extend over at least a part of a side edge of the shaft and/or a field contact zone of the hook.
    It has been found that due to this thickness gradient and due to the side webs the inlay can be made such that impact damping by the inlay is substantially enhanced locally without substantially affecting the impact strength of the sticks' core material.
  • Such an inlay has a U-shaped or J-shaped cross section gripping around part of the shaft. The thick inlay main body effectively protects the side edge of the shaft, while the thinner webs contribute to a better attachment of the inlay to the shaft.
    In a more specific embodiment the side webs can have a constant thickness.
  • To allow the outer surface of the inlay to follow the contour of the hockey stick, the inlay main body can be provided with a curved outer surface. The contact surface contacting the opposed surface of the hockey stick can be flat.
    The inlay main body may for instance cover at least the lower section of the shaft side edge facing the hook. This part of the hockey stick can particularly be exposed to impact loads during play, e.g., with back hand shots.
    Optionally, the inlay comprises a field contact section extending over at least a part of a field contact zone of the hook. Such a field contact section of the inlay may for example have a gradually varying thickness, e.g., the thickness may gradually be reduced in the direction of the side webs. This results in a more convenient contact between the hook and the field during play.
    The inlays can have two or more inlay main bodies. For instance, the inlay comprises a first inlay main body covering at least the lower section of the shaft side edge facing the hook, and a second inlay main body covering at least a field contact zone of the hook, wherein the inlay comprises a web extending over the back face of the hockey stick to connect both inlay main bodies and wherein the web has a lesser thickness than the inlay main bodies. In such an embodiment, the web connecting the two inlay main bodies can for example cover at least the back side of the hook.
  • Good impact resistance is obtained if the inlay main body has a thickness of 1 - 5 mm, e.g., about 2,5 - 3, 5 mm, whereas the side extensions have a thickness of 0,5 - 2 mm, e.g., about 0,8 - 1,2 mm. Other thicknesses can also be used, if so desired.
  • The inlays can be shaped to be flush with the surface of the hockey stick, if so desired. This can for example be achieved by positioning the inlay in a matching recess in the hockey stick.
  • The inlays are made of an elastomeric material, for example, thermoset elastomeric urethane, thermoset elastomeric dicyclopentadiene, thermoplastic elastomers, thermoplastic urethanes, or thermoplastic rubbers, such as styrene modified thermoplastic rubbers. Good results are obtained with 2K thermoplastic rubbers, e.g., having a Shore hardness of 90 or more. Fiber reinforced rubber, such as carbon rubber, can also be used. Optionally some parts of the inlay can be made of a different elastomeric material than the rest of the inlay. For instance, an inlay section covering a field contact zone of the hook may be made of an elastomer, e.g., a thermoplastic rubber with a higher hardness. This is to reduce wear and to reduce slowing down of the stick by field contact.
  • Optionally, the inlay or inlays can be applied on the hockey stick by directly moulding the inlays onto the stick, for instance by reaction injection moulding. Alternatively, adhesives can be used to fixate the inlay(s). Other suitable techniques can also be used, if so desired.
  • The invention is particularly suitable for use with field hockey sticks of a fiber reinforced composite material, but can also be used for other types of field or ice hockey sticks if so desired.
  • The invention will be further explained under reference to exemplary embodiments shown by the accompanying drawings.
    • Figure 1:
    shows in front view an exemplary embodiment of a hockey stick according to the invention;
    Figure 2:
    shows the back view of the hockey stick of Figure 1;
    Figure 3:
    shows the hockey stick of Figure 1 in cross section along line A-A;
    Figure 4:
    shows the hockey stick of Figure 1 in cross section along line B-B;
    Figure 5:
    shows a perspective view of a second exemplary embodiment of a hockey stick;
    Figure 6:
    shows a further view of the hockey stick of Figure 5;
    Figure 7:
    shows a front view of the hockey stick of Figure 5;
    Figure 8:
    shows a cross section along line B-B in Figure 7;
    Figure 9:
    shows a cross section along line A-A in Figure 7.
  • Figures 1 and 2 shows a hockey stick 1, e.g., made of a fibre reinforced composite material. The hockey stick 1 has a flat front side 2, a convex back side 3, and two rounded longitudinal edges 4, 5 joining and spacing the front and back sides 2, 3. The hockey stick 1 has a substantially cylindrical grip (not shown) at its top end, a hook 6 at its lower end, and a shaft 7 extending between the hook and the grip. From grip to hook the front side of the shaft 7 grip gradually flattens, while the back side 3 remains rounded.
  • The hockey stick 1 comprises an inlay 10 of an elastomeric material, such as a thermoplastic rubber. The inlay 10 comprises an inlay main body 11 with a thickness varying from a maximum of about 3 mm to a minimum of about 1 mm. The main body 11 extends along a major part of the longitudinal edge 5 of the shaft 7 facing the hook 6. Over the length of the inlay main body 11 the inlay 10 has a U-shaped cross section, with a back web 12 extending over about half the width of the back face, and a front web 13 extending over almost the full flat front side 2. The back web 12 and the front web 13 have a thickness of about 1 mm. The back web 12 and the inlay main body 11 of the inlay 10 stop near the hook 6. The front web 13 also comprises a section 14 which extends over the flat front side of the hook 6 to provide improved ball control. This section 14 of the front web 13 can have a larger thickness than the other parts of the front web 13.
  • The inlay 10 is sunk in a correspondingly shaped recess 15 in the hockey stick 1. The depth of the recess 15 is such that the inlay 10 is fully flush with the hockey stick surface. The transition between the inlay main body 11 and the front and back webs 12, 13 is not visible from the outside when the inlay is attached within the recess 15.
  • Figure 5 - 9 show a second embodiment of a hockey stick 20. The hockey stick 20 comprises an inlay 21 of varying thickness positioned in a matching recess in the hickey stick 20. The inlay 21 comprises a first inlay main body 22 covering the lower section 23 of the shaft side edge facing the hook 24, and a second inlay main body 25 covering at least a field contact zone 26 of the hook 24. The second inlay main body 25 may be made of a harder material than the first inlay main body 21. The inlay 21 also comprises a web 27 of an essentially constant thickness extending over the front face 28 of the hockey stick 20 to connect both inlay main bodies 22, 25. A side web 29 extends over a part of the back side 30 of the shaft with a curved outline 31.

Claims (13)

  1. Hockey stick (1) comprising a shaft (7), a hook (6), a back face (3) a front face (2), two side edges (4, 5) spacing the back and front faces, and one or more inlays (10) of an elastomeric material characterized in that at least one of the one or more inlays (10) comprises an inlay main body (11) of varying thickness extending over a part of a side edge, and two side webs (12, 13) extending from the inlay main body over at least a part of the back or front face, wherein the first side web (13) extends over at least a part of the front face of the hockey stick, and the second side web (12) extends over at least a part of the back face of the hockey stick, wherein the inlay main body (11) comprises a thickness which gradually reduces in the direction of the side webs (12, 13).
  2. Hockey stick according to claim 1 wherein the side webs (12, 13) have a constant thickness.
  3. Hockey stick according to any one of the preceding claims wherein the inlay main body (11) has a curved outer surface and a flat contact surface contacting the opposed surface of the hockey stick.
  4. Hockey stick according to any one of the preceding claims wherein the inlay (10) extends over a lower section of the shaft side edge facing the hook (6).
  5. Hockey stick according to any one of the preceding claims wherein the inlay (10) extends over at least a part of the hook (6).
  6. Hockey stick according to claim 5 wherein the inlay (10) comprises a field contact section extending over at least a part of a field contact zone of the hook (6).
  7. Hockey stick according to claim 6 wherein the field contact section of the inlay has a gradually varying thickness.
  8. Hockey stick according to claim 6 or 7 wherein the inlay (10) comprises a first inlay main body covering at least the lower section of the shaft side edge facing the hook, and a second inlay main body covering at least a field contact zone of the hook, wherein the inlay comprises a web extending over the front face of the hockey stick to connect both inlay main bodies.
  9. Hockey stick according to claim 8 wherein the web connecting the two inlay main bodies covers at least the front side of the hook.
  10. Hockey stick according to any one of the preceding claims, wherein the inlay main body (11) has a thickness of 1 - 5 mm, e.g., about 2,5 - 3,5 mm, whereas the side webs (12, 13) have a thickness of 0, 5 - 2 mm, e.g., about 0,8 - 1,2 mm.
  11. Hockey stick according to any one of the preceding claims wherein the one or more inlays (10) are flush with the surface of the hockey stick (1).
  12. Hockey stick according to any one of the preceding claims wherein the inlays (10) are made of a 2K thermoplastic rubber.
  13. Hockey stick according to any one of the preceding claims wherein the hockey stick (1) is made of a fibre reinforced composite material.
EP12703600.2A 2011-04-28 2012-01-03 Hockey stick Active EP2701810B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1038782A NL1038782C2 (en) 2011-04-28 2011-04-28 ADJUSTMENT OF A HOCKEY STICK.
PCT/NL2012/050003 WO2012148262A1 (en) 2011-04-28 2012-01-03 Hockey stick

Publications (2)

Publication Number Publication Date
EP2701810A1 EP2701810A1 (en) 2014-03-05
EP2701810B1 true EP2701810B1 (en) 2017-03-15

Family

ID=45581990

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12703600.2A Active EP2701810B1 (en) 2011-04-28 2012-01-03 Hockey stick

Country Status (6)

Country Link
EP (1) EP2701810B1 (en)
AU (1) AU2012248903B2 (en)
ES (1) ES2626292T3 (en)
NL (1) NL1038782C2 (en)
WO (1) WO2012148262A1 (en)
ZA (1) ZA201308995B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10315082B1 (en) 2017-11-30 2019-06-11 Bauer Hockey, Llc Hockey stick with co-molded construction

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2310802C (en) * 1999-08-04 2007-05-01 Sport Maska Inc. Double pressing method and machine for manufacturing a hockey stick shaft, and hockey stick shaft made therefrom
US7201678B2 (en) * 2003-09-19 2007-04-10 Easton Sports, Inc. Sports equipment handle with cushion and grip ribs
DE602005020591D1 (en) * 2004-02-26 2010-05-27 Sport Maska Inc SPORT APPARATUS AND BOWL WITH INCREASED IMPACT PROTECTION AND METHOD OF MANUFACTURE THEREOF

Also Published As

Publication number Publication date
ES2626292T3 (en) 2017-07-24
ZA201308995B (en) 2014-09-25
EP2701810A1 (en) 2014-03-05
NL1038782C2 (en) 2012-10-30
WO2012148262A1 (en) 2012-11-01
AU2012248903A1 (en) 2013-12-19
AU2012248903B2 (en) 2017-05-11

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