Patent US4180264A successfully refreshed from Google Patents.
US4180264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Racket handle and method of making same
Assignee: Acro Inc
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Filing: 1977-04-25
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Granted: 1979-12-25
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Expires: 1997-04-25
Abstract
Abstract A grip is placed inside a mold and the grip and mold are filled with a foam material. The handle pieces of a metal sport racket are placed inside the grip, so that as the foam rises and hardens, the foam becomes a handle around the handle pieces with the grip covering the handle.
Inventors
- 👤 Mark L. Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:02
CPC Classifications
A; A63; A63B; A63B49/00; A63B49/02; A63B49/08; A63B60/00; A63B60/06; A63B60/08; A63B60/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
123 words
A method of making handles for game rackets comprising, inserting a stretchable handle grip covering into a cavity of a mold corresponding substantially to the size and shape of the desired handle, filling said covering inside said cavity with expandable plastic material, inserting the handle extremity of the racket into said covering, causing said plastic material to expand and stretch the covering to the shape of the mold, allowing the plastic to harden into a handle around said handle extremity bonded to and covered by said covering with the hardened plastic filling all the region between the handle extremity and the surrounding covering which covering forms the outer surface of said handle, and disengaging said mold from said handle and grip covering assembly.
Claim 2
Independent Claim
123 words
A method of making handles for game rackets comprising, inserting a stretchable handle grip covering into a cavity of a mold corresponding substantially to the size and shape of the desired handle, filling said covering inside said cavity with expandable plastic material, inserting the handle extremity of the racket into said covering, causing said plastic material to expand and stretch the covering to the shape of the mold, allowing the plastic to harden into a handle around said handle extremity bonded to and covered by said covering with the hardened plastic filling all the region between the handle extremity and the surrounding covering which covering forms the outer surface of said handle, and disengaging said mold from said handle and grip covering assembly.
Claim 3
Dependent Claim
22 words
A method of making handles for game rackets in accordance with claim 1 wherein said expandable plastic material is foam-in-place plastic material.
Claim 4
Dependent Claim
46 words
A method of making handles for game rackets in accordance with claim 1 and further including the step of confining said plastic material substantially to the volume inside said covering with a cap attached to the end of the handle extremity adjacent to the racket throat.
Claim 5
Dependent Claim
22 words
A game racket having a plastic handle covered by a stretchable hand grip covering made according to the method of claim 1.
Claim 6
Dependent Claim
117 words
In a game racket having a frame, a plastic handle having flat intersecting surfaces and finished shape conforming to that of a mold in which the handle was molded and made of foam-in-place plastic bonded to a stretchable grip surrounding the hardened expanded foam-in-place plastic and bonded thereto by the expanding and hardening of said foam-in-place plastic, said stretchable grip prior to expansion of said foam-in-place plastic having a shape different from said finished shape and after expansion corresponding substantially to said finished shape and being the outer surface of said handle, the extremeties of said frame being seated in said foam-in-place plastic which plastic fills essentially the entire region between said extremeties and said stretchable grip.
Claim 7
Dependent Claim
117 words
In a game racket having a frame, a plastic handle having flat intersecting surfaces and finished shape conforming to that of a mold in which the handle was molded and made of foam-in-place plastic bonded to a stretchable grip surrounding the hardened expanded foam-in-place plastic and bonded thereto by the expanding and hardening of said foam-in-place plastic, said stretchable grip prior to expansion of said foam-in-place plastic having a shape different from said finished shape and after expansion corresponding substantially to said finished shape and being the outer surface of said handle, the extremeties of said frame being seated in said foam-in-place plastic which plastic fills essentially the entire region between said extremeties and said stretchable grip.
Claim 8
Dependent Claim
16 words
A game racket plastic handle in accordance with claim 5 wherein said stretchable grip is seamless.
Claim 9
Dependent Claim
17 words
A game racket plastic handle in accordance with claim 6 having sharp corners between adjacent intersecting surfaces.
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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) | 1982-12-24 | 1983-06-25 | 1983-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-24 | 1987-06-25 | 1987-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-24 | 1991-06-25 | 1991-12-25 | $7700.00 | Window Closed / Lapsed |