Patent US4538812A successfully refreshed from Google Patents.
US4538812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weight device for athletic racket
Assignee: Individual
•
Filing: 1982-02-22
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Granted: 1985-09-03
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Expires: 2002-02-22
Abstract
Abstract A weight device for attachment to a tennis racket having two sheets separated by an elastic member. Each sheet contains a plurality of weights which are housed in chambers. The chambers are formed by the joining of two layers of flexible material at spaced locations.
Inventors
- 👤 David B. Mugford
- 👤 Sidney J. Guidicianne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:52
CPC Classifications
A; A63; A63B; A63B60/00; A63B60/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
173 words
The combination of an athletic racket having a tubular member, with a weight device for detachable affixation to such athletic racket, said device comprising: first and second flexible sheets, said first sheet and said second sheet each having first and second sides, said first sides comprising non-slip surfaces having a high coefficient of friction with respect to the surface of the tubular member; at least one weight attached to each flexible sheet; an elastic member distinct from the non-slip surface and integrally attached to the first and second sheets for elastically separating the sheets into two weight-bearing portions which by stretching of the elastic member may be variably spaced apart from each other so as to position the weights on substantially opposing sides of the racket while tensioning the sheets; and latch means, for removably latching the first and second sheets together into a physically closed loop around the tubular member so as to maintain the elastic tension of the sheets while frictionally securing the weights in opposing balanced positions around the racket.
Claim 2
Dependent Claim
173 words
The combination of an athletic racket having a tubular member, with a weight device for detachable affixation to such athletic racket, said device comprising: first and second flexible sheets, said first sheet and said second sheet each having first and second sides, said first sides comprising non-slip surfaces having a high coefficient of friction with respect to the surface of the tubular member; at least one weight attached to each flexible sheet; an elastic member distinct from the non-slip surface and integrally attached to the first and second sheets for elastically separating the sheets into two weight-bearing portions which by stretching of the elastic member may be variably spaced apart from each other so as to position the weights on substantially opposing sides of the racket while tensioning the sheets; and latch means, for removably latching the first and second sheets together into a physically closed loop around the tubular member so as to maintain the elastic tension of the sheets while frictionally securing the weights in opposing balanced positions around the racket.
Claim 3
Dependent Claim
131 words
A combination in accordance with claim 1, wherein the first and second sheets each have a plurality of weights attached thereto, said first sheet and said second sheet each comprising first and second layers coextensively disposed in generally parallel planes, said layers being joined to one another along a series of at least four parallel lines so as to form between the layers, a plurality of chambers, said plurality of weights being located in said chambers and said chambers having longitudinal axes; the parallel lines, the elastic member and the longitudinal axes of said chambers all being substantially parallel to a central axis of the tubular member thereby permitting flexible disposition of the device around the tubular member for assuring conformal contact of the respective non-slip surface and the tubular member.
Claim 4
Dependent Claim
19 words
A combination in accordance with claim 2 wherein the latch means comprises mating strips of hook and loop-type material.
Claim 5
Dependent Claim
12 words
A combination, in accordance with claim 3 wherein the weights are granular.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-09-02 | 1989-03-04 | 1989-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-02 | 1993-03-04 | 1993-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-02 | 1997-03-04 | 1997-09-03 | $7700.00 | Window Closed / Lapsed |