US4141549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tennis racket
Assignee: Individual
•
Filing: 1977-05-19
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Granted: 1979-02-27
•
Expires: 1997-05-19
Abstract
Abstract A tennis racket has a frame member forming a head portion having duplicate strung ball striking matrices, each matrix being substantially coplanar with a respective front and rear face of the frame member. The matrices are formed with a plurality of intersecting string lengths, each being threaded through an aperture extending between the front and rear face of the frame member. In an alternate embodiment each string length traverses a respective front or rear face and then is passed through a radially directed aperture connecting an outer margin of the frame with an inner margin. A signal device is attachable to the matrices for emitting an audible response upon ball impact within a prescribed locus on the matrix.
Inventors
- 👤 Thomas J. Hayes
- 👤 William M. Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:12
CPC Classifications
A; A63; A63B; A63B51/00; A63B51/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
132 words
A racket suitable for use in propelling a game projectile, the racket comprising a stem portion and a head portion, said head portion including a frame member having an inner margin defining an included area, said frame member supporting projectile propelling means within said included area for providing an impact zone to contact with the game projectile, the propelling means further including a plurality of longitudinal string lengths and a plurality of transverse string lengths forming duplicate striking matrices, said matrices being substantially coplanar respectively with a front and a rear face of the frame member and signalling means including a noise emitting element attachable to each of the respective projectile matrices, whereby deflection upon projectile impact with either matrix will result in contact between said elements to effect an audible response.
Claim 2
Dependent Claim
132 words
A racket suitable for use in propelling a game projectile, the racket comprising a stem portion and a head portion, said head portion including a frame member having an inner margin defining an included area, said frame member supporting projectile propelling means within said included area for providing an impact zone to contact with the game projectile, the propelling means further including a plurality of longitudinal string lengths and a plurality of transverse string lengths forming duplicate striking matrices, said matrices being substantially coplanar respectively with a front and a rear face of the frame member and signalling means including a noise emitting element attachable to each of the respective projectile matrices, whereby deflection upon projectile impact with either matrix will result in contact between said elements to effect an audible response.
Claim 3
Dependent Claim
31 words
A racket as claimed in claim 1 wherein the signalling means includes at least two plate members, said plate members having string engagement means for resilient securement to the respective matrices.
Claim 4
Dependent Claim
37 words
A racket as claimed in claim 2 wherein each plate is provided with a noise emitting element, the spacing between said elements being selectively adjustable for contact in accordance with the magnitude of the projectile impact force.
Claim 5
Dependent Claim
19 words
A racket as claimed in claim 3 wherein the noise emitting element is threadably secured to the plate member.
Claim 6
Dependent Claim
17 words
A racket as claimed in claim 1 wherein the noise emitting element includes a half-round metallic head.
References Cited (Backward Citations)
US1502845A
Cited
FR1212195A
Cited
FR1398833A
Cited
DE2307942A1
Cited
US3820785A
Cited
DE2453029A1
Cited
US4049269A
Cited
US3968966A
Cited
US4090707A
Cited
US4076239A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-26 | 1982-08-28 | 1983-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-26 | 1986-08-28 | 1987-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-26 | 1990-08-28 | 1991-02-27 | $7700.00 | Window Closed / Lapsed |