Patent US1325698A successfully refreshed from Google Patents.
US4155550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Offset game racket
Assignee: Individual
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Filing: 1977-07-14
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Granted: 1979-05-22
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Expires: 1997-07-14
Abstract
Abstract This relates to a game racket, such as a tennis racket, wherein the hand grip portion of the handle is both offset from the general plane of the head and also disposed at an angle thereto. The handle is so configurated with respect to the head wherein the center of gravity is along the axis of the hand grip portion to provide for a balanced condition. This arrangement of the handle with respect to the head permits a greater moment of inertia, by which a greater stability is obtained, particularly one against twisting of the racket in one's hand when the ball is struck off-center of the head; that is, on either side of the longitudinal axis of the racket head. Further, by off-setting the handle, a greater arc of stroke is possible, thereby permitting a struck ball to be repelled with a higher velocity.
Inventors
- 👤 Leo N. Planakis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:28
CPC Classifications
A; A63; A63B; A63B49/00; A63B49/02; A63B49/08; A63B60/00; A63B60/06; A63B60/34
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
117 words
A new article of manufacture comprising a game racket, said racket including a head and a handle, said handle being joined to a base portion of said head, said handle including a grip portion, said head having a primary striking face, said head and said primary striking face lying in a general plane, said grip portion having a primary axis disposed in angular relation to said general plane with said primary striking face facing away from said handle, and said racket having a center of gravity disposed substantially along said axis, said base portion of said head joining said handle in a throat area, and said axis intersecting said general plane generally adjacent said head base portion.
Claim 2
Dependent Claim
117 words
A new article of manufacture comprising a game racket, said racket including a head and a handle, said handle being joined to a base portion of said head, said handle including a grip portion, said head having a primary striking face, said head and said primary striking face lying in a general plane, said grip portion having a primary axis disposed in angular relation to said general plane with said primary striking face facing away from said handle, and said racket having a center of gravity disposed substantially along said axis, said base portion of said head joining said handle in a throat area, and said axis intersecting said general plane generally adjacent said head base portion.
Claim 3
Dependent Claim
29 words
The racket of claim 1 wherein said center of gravity is generally at the point between the grip portion and that point where said axis intersects said general plane.
Claim 4
Dependent Claim
16 words
The racket of claim 1 wherein said axis intersects said head generally at said throat area.
Claim 5
Dependent Claim
22 words
The racket of claim 3 wherein the angle between said axis and said general plane is generally on the order of 20°.
Claim 6
Dependent Claim
21 words
The racket of claim 1 wherein the angle between said axis and said general plane is generally between 3° and 40°.
Claim 7
Dependent Claim
24 words
The racket of claim 1 wherein the angle between said axis and said general plane is generally on the order of 15° to 25°.
Claim 8
Dependent Claim
42 words
The racket of claim 1 wherein said handle includes a shank joined to said head in said throat area, and the shape and mass of said shank and throat area are selected to position said center of gravity substantially along said axis.
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) | 1982-05-21 | 1982-11-20 | 1983-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-21 | 1986-11-20 | 1987-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-21 | 1990-11-20 | 1991-05-22 | $7700.00 | Window Closed / Lapsed |