WO1994014506B1 - Racket handle extender - Google Patents
Racket handle extenderInfo
- Publication number
- WO1994014506B1 WO1994014506B1 PCT/US1993/012562 US9312562W WO9414506B1 WO 1994014506 B1 WO1994014506 B1 WO 1994014506B1 US 9312562 W US9312562 W US 9312562W WO 9414506 B1 WO9414506 B1 WO 9414506B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- extender
- handle
- shaft
- racket
- bar
- Prior art date
Links
- 239000004606 Fillers/Extenders Substances 0.000 title claims abstract 68
- 239000000463 material Substances 0.000 claims abstract 19
- 239000002250 absorbent Substances 0.000 claims abstract 8
- 230000002745 absorbent Effects 0.000 claims abstract 6
- 230000001808 coupling Effects 0.000 claims 3
- 238000010168 coupling process Methods 0.000 claims 3
- 238000005859 coupling reaction Methods 0.000 claims 3
- 239000000945 filler Substances 0.000 claims 2
- 208000008532 Arm Injury Diseases 0.000 claims 1
- 238000005728 strengthening Methods 0.000 claims 1
Abstract
A racket handle extender (22) is provided for use with a conventional sports racket (20). The extender comprises a bar (34) having a cross-sectional shape that generally matches the cross-sectional shape of the racket handle (28), and a stem (32) that protrudes from one end of the bar. The stem has a cross section smaller than that of the bar and is shaped to be placed within the end of the shaft (26) of a conventional sports racket (20) after the shaft has been properly hollowed out. The bar includes a hollow portion and has an opening at the end opposite the stem for inserting weights (38) and a cap (42). Supports (40) are disposed along at least one side of the bar and the shaft for strenghtening the attachment of the extender to the racket. The bar is made of a lightweight, strong, vibration absorbent material. The bar may also have vibration absorbent material attached to it.
Claims
1. A racket handle extender for use with a sports racket having a head, a shaft, and a handle having a receptacle formed as part of an end of the handle opposite that connected to the head, said extender comprising:
(a) a bar having a cross-sectional shape substantially the same size as that of the racket handle; and
(b) a stem protruding from one end of said bar, said stem adapting said bar to mate with a receptacle formed as part of the sports racket shaft, so that the racket handle extender is strongly securable to the end of the handle.
2. The extender of Claim 1, wherein said stem has a cross section smaller than that of said bar, said stem being shaped to fit within an end of the racket handle.
3. The extender of Claim 1, further comprising a textured grip attached to said bar, said attached grip having a size matching that of the racket handle so as to create a smooth transition between the two.
4. The extender of Claim 1, wherein said bar is partially hollow, having an opening at an end opposite said stem, said racket handle extender further including a cap sized to cover said opening.
5. The extender of Claim 4, further including at least one weight sized to be inserted within said bar for changing the balance of the racket.
6. The extender of Claim 1, further including at least one support secured to said bar and securable to the shaft, for strengthening an attachment of said extender to the racket.
7. The extender of Claim 6, wherein said at least one support is disposed along at least one side of said bar, said at least one support extending from said bar onto the shaft when in use to strengthen the attachment of said bar to the shaft.
8. The extender of Claim 6, wherein at least one end of said at least one support is securable within the shaft.
9. The extender of Claim 1, wherein at least one of said bar and said stem comprises a vibration absorbent material. -18-
10. The extender of Claim 1, wherein at least one of said bar and said stem comprises a material having a density less than 4.6 Mg/m3 and a tensile strength greater than 5 MPa.
11. The extender of Claim 1, wherein said stem has a cross-sectional area at least as large as that of said bar.
12. A method of extending the length of a sports racket having a head, a shaft, and a handle, comprising the step of securing a handle extender to the shaft to form an extended portion of the handle, such that the racket can be strongly held farther from the head of the racket.
13. The method of Claim 12, wherein the handle extender comprises a material having a density less than 4.6 Mg/m3 and a tensile strength greater than 5 MPa.
14. The method of Claim 12, further comprising the step of removing the handle extender from the shaft and resecuring a handle extender to the same shaft.
15. The method of Claim 12, wherein the handle extender comprises vibration absorbent material.
16. The method of Claim 12, further comprising the step of attaching vibration absorbent material to the handle extender to reduce vibrations and add structural strength to the handle extender.
17. The method of Claim 12, further comprising the step of inserting at least one balancing weight within the handle extender.
18. The method of Claim 12, further comprising the step of hollowing a portion of the inside of the shaft before securing the handle extender, and wherein said step of securing a handle extender includes inserting one end of the handle extender into the hollowed portion of the shaft.
19. The method of Claim 12, wherein the racket includes a grip, the method further comprising the steps of removing the grip from the handle before said step of securing a handle extender; and replacing a grip over the handle and said extended portion after said step of securing a handle extender. -19-
20. The method of Claim 19, further comprising the step of attaching a support along at least one side of the handle extender and a portion of the handle.
21. The method of Claim 12, further comprising the step of securing the handle extender to the shaft by applying a buildup material to the handle and the handle extender, wherein the extender is thereby strengthened and the chance of arm injury is reduced.
22. The method of Claim 12, further comprising the steps of:
(a) securing a grip to the racket and extender; and
(b) securing a textured material to the extender, wherein said textured material covers only a portion of the grip so that a different feel of one part of the grip is achieved and may be readily felt by a player for proper hand repositioning along the length of the extender without having to look at the sports racket during play.
23. The method of Claim 12, further comprising the step of adapting the racket such that it can receive and secure a handle extender before the step of attaching a handle extender.
24. A racket handle extender for use with a conventional sports racket having a head and a shaft with an end portion, said extender comprising:
(a) a hollow elongate tube having a cross-sectional shape substantially like that of the shaft, such that said tube may be secured to the end portion of the shaft; and
(b) means to absorb vibrations coupled to said tube.
25. The extender of Claim 24, wherein the shaft has a recess formed within the end portion thereof, and wherein said cross-sectional shape of at least a portion of said tube is smaller than that of the shaft so as to match a cross-sectional shape of the recess formed in the end portion, such that said tube may be secured within the recess.
26. The extender of Claim 25, further including means to removably secure said tube to the shaft.
27. The extender of Claim 26, wherein said securing means comprise at least one notch disposed within an outer surface of said tube and engagement means -20-
that may be coupled to the shaft and may be moved into engagement with said notch such that said tube may be removably secured to said shaft.
28. The extender of Claim 24, further comprising a grip portion disposed on one end of said tube, said grip portion having a textured surface.
29. The extender of Claim 24, wherein said cross-sectional shape of at least a portion of said tube is larger than that of the shaft so as to substantially match a cross-sectional shape of the end portion of the shaft, such that said tube is adapted to slide over the end portion and be secured in place.
30. The extender of Claim 29, further comprising at least one support secured to said tube.
31. The extender of Claim 24, further comprising at least one weight removably fitted within said tube for balancing the sports racket.
32. The extender of Claim 24, wherein said tube comprises a material with a density less than 4.6 Mg m3 and a tensile strength greater than 20 MPa.
33. The extender of Claim 24, further comprising at least one brace disposed within said tube extending between opposite sides of said tube.
34. The extender of Claim 24, wherein said means to absorb vibrations comprises a filler material disposed within at least a portion of said tube.
35. The extender of Claim 24, wherein said tube comprises a vibration absorbent material.
36. A racket handle extender for use with a sports racket having a head and a shaft with an end portion having a receptacle, said extender comprising:
(a) a bar having a cross-sectional shape that is substantially the same size as the shaft; and
(b) attachment means coupled to said bar to removably and strongly secure said bar to the shaft. -21 -
37. The extender of Claim 36, wherein said attachment means comprises a rod having one end shaped to fit within the end portion recess of the shaft, and wherein the end of said bar includes an opening shaped to receive another end of said rod such that said rod may be disposed partially within said bar and partially within the shaft for attachment of said bar to the shaft.
38. A method of rebalancing a sports racket having: a head and a shaft with an end portion, comprising the steps of:
(a) securing a removable handle extender, having a cross-sectional size substantially the same as that of the shaft, to the end of the racket, such that the sports racket can be held strongly farther from the head during play; and
(b) securing at least one balancing weight to the extended racket
39. A method of reducing vibration in association with altering the length of a sports racket having a head and a shaft with an end portion, comprising the steps of:
(a) securing a removable extender having a cross-sectional size that is substantially like that of the shaft to the end portion of the racket, such that the sports racket can be held strongly farther from the head; and
(b) coupling a vibration-absorbent material, having a density less than 2.3 Mg/m3 and a tensile strength of at least 0.2 MPa, to the extender.
40. The method of Claim 39, wherein said step of coupling a material comprises disposing a filler material within the extended portion.
41. The method of Claim 39, wherein said step of coupling a material comprises attaching a material to at least an outer portion of the handle extender.
42. A method of reducing vibration in association with altering the length of a sports racket having a head and a shaft with an end portion, comprising the step of securing a removable extender, having a cross-sectional size substantially like that of the shaft, to the end portion of the racket, such that the racket can be held strongly farther from the head, wherein the extender comprises vibration-absorbent material.
43. A method of lengthening a sports racket having a handle, comprising the step of strongly securing a strong and removable handle extender to the handle, the extender projecting beyond the handle. -22-
44. The method of Claim 46, wherein the support means comprise at least one longitudinally oriented support placed on at least a part of the handle extender.
45. The method of Claim 46, wherein the support means comprise at least one brace strongly secured within the handle extender, extending between opposite sides of the extender.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU59600/94A AU5960094A (en) | 1992-12-23 | 1993-12-22 | Racket handle extender |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US99537692A | 1992-12-23 | 1992-12-23 | |
| US07/995,376 | 1992-12-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1994014506A1 WO1994014506A1 (en) | 1994-07-07 |
| WO1994014506B1 true WO1994014506B1 (en) | 1994-08-18 |
Family
ID=25541711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1993/012562 WO1994014506A1 (en) | 1992-12-23 | 1993-12-22 | Racket handle extender |
Country Status (2)
| Country | Link |
|---|---|
| AU (1) | AU5960094A (en) |
| WO (1) | WO1994014506A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130303297A1 (en) * | 2012-05-11 | 2013-11-14 | Charles Victor Mackie | T/P weights 5 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3332291A1 (en) * | 1983-09-07 | 1985-03-28 | Puma-Sportschuhfabriken Rudolf Dassler Kg, 8522 Herzogenaurach | BALL RACKETS, IN PARTICULAR TENNIS RACKETS |
| DE3704121A1 (en) * | 1986-02-19 | 1987-08-20 | Nippon Musical Instruments Mfg | VIBRATION ABSORBER FOR A ROCKET |
| BE1000688A6 (en) * | 1987-07-14 | 1989-03-14 | Donnay Donnay S A Ets | Racket handle. |
-
1993
- 1993-12-22 AU AU59600/94A patent/AU5960094A/en not_active Abandoned
- 1993-12-22 WO PCT/US1993/012562 patent/WO1994014506A1/en active Application Filing
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