Patent US3915453A successfully refreshed from Google Patents.
US3915453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallic racket with reinforcing apparatus
Assignee: Individual
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Filing: 1975-02-07
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Granted: 1975-10-28
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Expires: 1995-02-07
Abstract
Abstract A racket apparatus including an elliptical metallic frame and a bridge having integral sockets at each end which receives portions of the frame adjacent the throat and supports the strings which are to be secured adjacent thereto in a manner to reduce breakage of the frame.
Inventors
- 👤 Daishiro Nishimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:17
CPC Classifications
A; A63; A63B; A63B49/00; A63B49/02; A63B49/12; A63B49/022; A63B49/03; A63B60/00; A63B60/54
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
268 words
A strung game racket comprising a generally elliptical head portion connected by a pair of downwardly and reversely curved throat arm portions to a handle portion, said throat arm portions being imperforate, an arcuate bridge member spanning the throat and connecting opposite ends of said head portion to complete the elliptical configuration thereof, said bridge member having a relatively narrow central portion with at least an upper surface and an enlarged tubular socket integrally formed at each end, said central portion having a plurality of openings extending therethrough for receiving the racket stringing, each of said tubular sockets receiving the lowermost curved section of said head portion and the upper portion of said throat arms, means mounted between said tubular sockets and said head and throat arm portions for cushioning and absorbing the impact force transmitted through the bridge member to said head and throat arm portions, a single hollow rivet extending through and adjacent to each of the outer ends only of said tubular sockets, through said cushioning means and through said lower most curved section of said head portion to lock said bridge member thereto and for receiving stringing therethrough, the upper surface of each of said tubular sockets being integrally formed with a raised string guide portion intermediate two upper surface only string holes whereby a string looped through these latter holes will engage the undersurface of said raised portion in spaced relation to said upper portion of said throat arms, and with said upper surface string holes and said raised portion being located between the endmost central portion string holes and said hollow rivets.
Claim 2
Dependent Claim
268 words
A strung game racket comprising a generally elliptical head portion connected by a pair of downwardly and reversely curved throat arm portions to a handle portion, said throat arm portions being imperforate, an arcuate bridge member spanning the throat and connecting opposite ends of said head portion to complete the elliptical configuration thereof, said bridge member having a relatively narrow central portion with at least an upper surface and an enlarged tubular socket integrally formed at each end, said central portion having a plurality of openings extending therethrough for receiving the racket stringing, each of said tubular sockets receiving the lowermost curved section of said head portion and the upper portion of said throat arms, means mounted between said tubular sockets and said head and throat arm portions for cushioning and absorbing the impact force transmitted through the bridge member to said head and throat arm portions, a single hollow rivet extending through and adjacent to each of the outer ends only of said tubular sockets, through said cushioning means and through said lower most curved section of said head portion to lock said bridge member thereto and for receiving stringing therethrough, the upper surface of each of said tubular sockets being integrally formed with a raised string guide portion intermediate two upper surface only string holes whereby a string looped through these latter holes will engage the undersurface of said raised portion in spaced relation to said upper portion of said throat arms, and with said upper surface string holes and said raised portion being located between the endmost central portion string holes and said hollow rivets.
Claim 3
Dependent Claim
22 words
The structure of claim 1 including a plurality of grommets extending through said head and said bridge member for receiving said stringing.
Claim 4
Dependent Claim
19 words
The structure of claim 1 in which at least said head and throat arm portions are made of metal.
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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) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |