US4076241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sports racket
Assignee: Individual
•
Filing: 1976-07-12
•
Granted: 1978-02-28
•
Expires: 1996-07-12
Abstract
Abstract A sports racket having a head including a frame within which is strung a plurality of string elements interconnected in such a manner to provide substantially concave ball-engaging surfaces on each face of the racket head.
Inventors
- 👤 Ernest L. Newsome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:41
CPC Classifications
A; A63; A63B; A63B51/00; A63B51/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
135 words
A sports racket comprising a head having a frame, a plurality of transversely and longitudinally extending string elements mounted within and connected to said frame to form a ball-engaging surface on each face of the racket, said string elements being interconnected in such a manner to form a substantially flat surface in the sweet spot area on each face of the racket disposed radially inwardly a substantial distance from the periphery of the frame, and a sloped surface on each face of the racket extending radially outwardly from the perimeter of the sweet spot area to said frame, thereby forming substantially concave ball-engaging surfaces on each face of the racket head, whereby various undesirable actions and reactions occasioned by a ball striking the face of the racket anywhere but on the sweet spot are compensated.
Claim 2
Dependent Claim
135 words
A sports racket comprising a head having a frame, a plurality of transversely and longitudinally extending string elements mounted within and connected to said frame to form a ball-engaging surface on each face of the racket, said string elements being interconnected in such a manner to form a substantially flat surface in the sweet spot area on each face of the racket disposed radially inwardly a substantial distance from the periphery of the frame, and a sloped surface on each face of the racket extending radially outwardly from the perimeter of the sweet spot area to said frame, thereby forming substantially concave ball-engaging surfaces on each face of the racket head, whereby various undesirable actions and reactions occasioned by a ball striking the face of the racket anywhere but on the sweet spot are compensated.
Claim 3
Dependent Claim
17 words
A sports racket according to claim 1, wherein the transversely and longitudinally extending string elements are interwoven.
Claim 4
Dependent Claim
46 words
A sports racket according to claim 2, wherein the transverse strings extend from the upper surface on one side of the frame to the opposite side of the frame to the lower surface thereof, said transverse string elments intersecting at the longitudinal axis of the frame.
Claim 5
Dependent Claim
101 words
A sports racket according to claim 3, wherein portions of the longitudinal and transverse strings on one face ot the racket abut their respective string portions on the opposite face of the racket to form the sweet spot in the center of the racket head, the remaining portions of the longitudinal and transverse strings on one face of the racket being spaced from the respective portions of the longitudinal and transverse strings on the opposite face of the racket, the spacing of the strings becoming progressively greater from the sweet spot area to the frame to thereby form a sloped surface.
Claim 6
Dependent Claim
52 words
A sports racket according to claim 1, wherein the frame is constructed of wood, the upper surface of the wooden frame being sloped toward the center of the area enclosed by the frame, and the lower surface of the frame being inclined toward the center of the area enclosed by the frame.
References Cited (Backward Citations)
DE543411C
Cited
GB190203471A
Cited
US1211708A
Cited
US1502845A
Cited
GB223151A
Cited
US1674173A
Cited
US1975341A
Cited
FR855902A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-27 | 1981-08-29 | 1982-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-27 | 1985-08-29 | 1986-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-27 | 1989-08-29 | 1990-02-28 | $7700.00 | Window Closed / Lapsed |