Patent US4026701A successfully refreshed from Google Patents.
US4568084A
Expired / Lapsed
US
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Racquet with improved string anchorage
Assignee: DP ACQUISITION Inc
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Filing: 1984-04-27
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Granted: 1986-02-04
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Expires: 2004-04-27
Abstract
Abstract A racquet has a sinuous string-securing member anchored in a groove around the internal periphery of the racquet frame. An anchoring member, which is wider than the mouth of the groove, engages each mounting portion of the string-securing member, and is trapped in the groove behind the mouth. The anchoring members may be made of nylon, and may be snap-fit over the mounting portions prior to sliding the entire string-securing assembly into the groove.
Inventors
- 👤 Jonathan C. Mott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:58
CPC Classifications
A; A63; A63B; A63B49/00; A63B49/02; A63B49/022; A63B49/028; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49838
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
146 words
A racquet comprising: a string-supporting frame having an internal periphery and a central area located inwardly therefrom for receiving a strung surface, said string supporting frame having a groove extending around the greater part of the internal periphery, said groove having a mouth and a base, said mouth being proximate said central area and being narrower than said base, a sinuous string-securing member having a plurality of spaced mounting portions anchored in the groove and a plurality of spaced string-securing loops projecting inwardly toward said central area from the mouth of the groove; and a plurality of anchoring members in said groove which are wider than said mouth so as to be trapped within said groove behind said mouth, each of said anchoring members having a channel facing the base of the said groove and retaining a respective one of said mounting portions in said channel.
Claim 2
Dependent Claim
146 words
A racquet comprising: a string-supporting frame having an internal periphery and a central area located inwardly therefrom for receiving a strung surface, said string supporting frame having a groove extending around the greater part of the internal periphery, said groove having a mouth and a base, said mouth being proximate said central area and being narrower than said base, a sinuous string-securing member having a plurality of spaced mounting portions anchored in the groove and a plurality of spaced string-securing loops projecting inwardly toward said central area from the mouth of the groove; and a plurality of anchoring members in said groove which are wider than said mouth so as to be trapped within said groove behind said mouth, each of said anchoring members having a channel facing the base of the said groove and retaining a respective one of said mounting portions in said channel.
Claim 3
Dependent Claim
18 words
A racquet according to claim 1 wherein said channel is dimensioned to fit closely around said mounting portion.
Claim 4
Dependent Claim
32 words
A racquet according to claim 2 wherein said channel closely surrounds more than half the perimeter of said mounting portion so that said anchoring member can be snap-fit over said mounting portion.
Claim 5
Dependent Claim
32 words
A racquet according to claim 3 wherein the length of each of said anchoring members, in the direction of the groove, is substantially equal to the length of its respective mounting portion.
Claim 6
Dependent Claim
12 words
A racquet according to claim 4 wherein said anchoring members are plastic.
Claim 7
Dependent Claim
12 words
A racquet according to claim 4 wherein said anchoring members are nylon.
Claim 8
Dependent Claim
23 words
A racquet according to claim 2 wherein the cross-sectional shape of the anchoring members is complementary to the cross-sectional shape of the groove.
Claim 9
Dependent Claim
47 words
A racquet according to claim 7 wherein said groove and said anchoring members are wedge-shaped in cross-section, the cross-section having tapered sides that taper toward the mouth of said groove so that tension on the strings tends to wedge said anchoring members more tightly in said groove.
Claim 10
Dependent Claim
34 words
A racquet according to claim 8 wherein said anchoring members are resilent, whereby said mounting portions are more tightly retained in said channels when said anchoring members are more tightly wedged in said groove.
Claim 11
Dependent Claim
32 words
A racquet according to claim 9 wherein said channel closely surrounds more than half the perimeter of said mounting portion so that said anchoring members can be snap-fit over said mounting portions.
Claim 12
Dependent Claim
32 words
A racquet according to claim 10 wherein the length of each of said anchoring members, in the direction of the groove, is substantially equal to the length of its respective mounting portion.
Claim 13
Dependent Claim
12 words
A racquet according to claim 9 wherein said anchoring members are plastic.
Claim 14
Dependent Claim
12 words
A racquet according to claim 9 wherein said anchoring members are nylon.
Claim 15
Dependent Claim
22 words
A racquet according to claim 8 wherein said mouth is defined by opposed lips extending from the tapered sides of said groove.
Claim 16
Dependent Claim
23 words
A racquet according to claim 1 wherein the cross-sectional shape of the anchoring members is complementary to the cross-sectional shape of the groove.
Claim 17
Dependent Claim
47 words
A racquet according to claim 15 wherein said groove and said anchoring members are wedge-shaped in cross-section, the cross-section having tapered sides that taper toward the mouth of said groove so that tension on the strings tends to wedge said anchoring members more tightly in said groove.
Claim 18
Dependent Claim
22 words
A racquet according to claim 16 wherein said mouth is defined by opposed lips extending from the tapered sides of said groove.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-02-03 | 1989-08-05 | 1990-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-03 | 1993-08-05 | 1994-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-03 | 1997-08-05 | 1998-02-04 | $7700.00 | Window Closed / Lapsed |