US4988101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shock absorbing string post for sports rackets
Assignee: Individual
•
Filing: 1989-09-05
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Granted: 1991-01-29
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Expires: 2009-09-05
Abstract
Abstract A damping device for application to longitudinal network strings used in sports rackets having a frame comprising a head, side portions and a throat section supporting the side portions. At least some of the longitudinal strings are directed toward and around a string post or anchoring member mounted within the throat section. A damping device is positioned between the string post and the strings where the latter are turned around the post. In another embodiment, two or more string posts are arranged whereby some of the outer strings may be applied to one of the posts, and some of the inner longitudinal strings may be applied to one or more of the other posts.
Inventors
- 👤 Tsai C. Soong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:16
CPC Classifications
A; A63; A63B; A63B60/00; A63B60/54; A63B49/00; A63B49/02; A63B49/03
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
139 words
In a sports racket having a frame defined by a top section, two opposed side portions, a throat or shank section and a handle, the improvement comprising: a string network having longitudinal strings and transverse cross strings wherein the axes of a portion of said longitudinal strings converge to a point within the handle, a string seating member secured to the frame adjacent the throat section, said portion of longitudinal strings being arranged to extend from the top section of the frame to and around said seating member and back to the top section, a damping member positioned on said string seating member between said seating member and said portion of longitudinal strings where said portion of strings extend around said seating member for damping vibration induced upon said portion of strings upon impact thereon by a sports racket.
Claim 2
Dependent Claim
139 words
In a sports racket having a frame defined by a top section, two opposed side portions, a throat or shank section and a handle, the improvement comprising: a string network having longitudinal strings and transverse cross strings wherein the axes of a portion of said longitudinal strings converge to a point within the handle, a string seating member secured to the frame adjacent the throat section, said portion of longitudinal strings being arranged to extend from the top section of the frame to and around said seating member and back to the top section, a damping member positioned on said string seating member between said seating member and said portion of longitudinal strings where said portion of strings extend around said seating member for damping vibration induced upon said portion of strings upon impact thereon by a sports racket.
Claim 3
Dependent Claim
24 words
The sports racket defined in claim 1 wherein said portion of longitudinal strings comprises at least one-third of the total of said longitudinal strings.
Claim 4
Dependent Claim
21 words
The sports racket defined in claim 1 wherein said longitudinal strings have a higher tension applied thereto than said transverse strings.
Claim 5
Dependent Claim
45 words
The sports racket defined in claim 1 wherein said string seating member includes a seat post secured to the side portions across the throat section and a string contacting element positioned between said seat post and said portion of strings extending around said seating member.
Claim 6
Dependent Claim
21 words
The sports racket defined in claim 4 wherein said damping member is positioned between said seat post and said contacting element.
Claim 7
Dependent Claim
19 words
The sports racket defined in claim 5 wherein adhesive material is between said damping member and said seat post.
Claim 8
Dependent Claim
19 words
The sports racket defined in claim 6 wherein adhesive material is between said damping member and said contacting element.
Claim 9
Dependent Claim
45 words
The sports racket defined in claim 1 including at least a second string seating member secured to the frame adjacent the throat section for reversing some others of the longitudinal strings and a damping member positioned between said other strings and said second string member.
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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) | 1994-01-28 | 1994-07-30 | 1995-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-28 | 1998-07-30 | 1999-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-28 | 2002-07-30 | 2003-01-29 | $7700.00 | Window Closed / Lapsed |