Patent US4079935A successfully refreshed from Google Patents.
US4079935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sports equipment
Assignee: Zimm Zamm AG
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Filing: 1976-03-25
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Granted: 1978-03-21
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Expires: 1996-03-25
Abstract
Abstract A sports implement comprising head and handle, the head including an integral lacunar structure with a desired striking zone thereof indicated by means chosen from the group comprising a prominent visual indicator whereby the zone is demarcated for visual identification by the player, an impact sensation indicator comprising a material increase in mass of the zone having regard to the total mass of the implement, and an aural indicator comprising means to emit a distinctive sound when the zone is struck.
Inventors
- 👤 Ian G. Gormley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:14
CPC Classifications
A; A63; A63B; A63B59/00; A63B59/80; A63B60/00; A63B60/06; A63B60/10; A63B69/00; A63B69/38; A63B2102/00; A63B2102/22; A63B60/50
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
75 words
A sports racket consisting of a head and a handle, the head having a frame that borders the head, an unstressed monolithic lattice structure within the frame and extending from side to side of the frame and having a multiplicity of openings therein, and means in the centre of the head closing a plurality of openings only in the centre of the head without prejudicing the playing characteristics of the surface of the lattice structure.
Claim 2
Dependent Claim
75 words
A sports racket consisting of a head and a handle, the head having a frame that borders the head, an unstressed monolithic lattice structure within the frame and extending from side to side of the frame and having a multiplicity of openings therein, and means in the centre of the head closing a plurality of openings only in the centre of the head without prejudicing the playing characteristics of the surface of the lattice structure.
Claim 3
Dependent Claim
18 words
A sports racket as claimed in claim 1 in which the means is integral with the lattice structure.
Claim 4
Dependent Claim
30 words
A sports racket as claimed in claim 2, said means being in the form of webs of a thickness less than the thickness of the remainder of said lattice structure.
Claim 5
Dependent Claim
93 words
A sports racket as claimed in claim 1, which is moulded integrally of plastics, said lattice structure consisting of a first plurality of spaced filaments that extend across the frame in one direction, said first filaments intersecting a further plurality of spaced filaments that extend across the frame in another direction, said first filaments being integral with said further filaments and forming with said further filaments said multiplicity of openings, said means closing a plurality of of said openings in the centre of the head and consisting of portions integral with the lattice.
Claim 6
Dependent Claim
35 words
A sports racket as claimed in claim 4 in which said integral portions of plastic closing said central openings are in the form of webs of a thickness less than the thickness of the filaments.
References Cited (Backward Citations)
US1682199A
Cited
US1531778A
Cited
US2660436A
Cited
FR1133204A
Cited
DE1051701B
Cited
DE1089675B
Cited
US2969984A
Cited
GB891047A
Cited
US3169019A
Cited
FR1398833A
Cited
FR1503812A
Cited
FR1573987A
Cited
US3820785A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-20 | 1981-09-19 | 1982-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-20 | 1985-09-19 | 1986-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-20 | 1989-09-19 | 1990-03-21 | $7700.00 | Window Closed / Lapsed |