US4589662A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plug for damping vibrations of tennis racket cords
Assignee: Individual
•
Filing: 1984-10-31
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Granted: 1986-05-20
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Expires: 2004-10-31
Abstract
Abstract A plug for damping vibrations of tennis racket cords comprising a flat parallelepiped body of resilient material provided with a pair of outer channels having laterally open slots to permit the plug to be inserted between the cords and the cords to be connected. The plug also has a pair of parallel inner holes located on the same plane with the axes of the channels and serving to increase the resilience of the material and make the plug adaptable to various types of rackets.
Inventors
- 👤 Aldo M. Robaldo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:59
CPC Classifications
A; A63; A63B; A63B60/00; A63B60/54; Y; Y10; Y10S; Y10S273/00; Y10S273/29
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
104 words
A vibration damping plug for tennis racket cords compising a flat one piece body of parallelepiped geometrical shape and resilient material, said body including a pair of outer channel means having parallel axes and a pair of slots to permit the body to be inserted between said cords and thereby resiliently connect the cords, said body further including a pair of inner hole means having parallel axes located in the same plane with the axes of said channel means for increasing the resilient effect of the material to make said body more resilient between said channel means to accommodate various types of tennis rackets.
Claim 2
Dependent Claim
104 words
A vibration damping plug for tennis racket cords compising a flat one piece body of parallelepiped geometrical shape and resilient material, said body including a pair of outer channel means having parallel axes and a pair of slots to permit the body to be inserted between said cords and thereby resiliently connect the cords, said body further including a pair of inner hole means having parallel axes located in the same plane with the axes of said channel means for increasing the resilient effect of the material to make said body more resilient between said channel means to accommodate various types of tennis rackets.
Claim 3
Dependent Claim
19 words
A vibration damping plug for tennis racket cords according to claim 1 wherein said resilient material is silicone rubber.
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) | 1989-05-19 | 1989-11-18 | 1990-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-19 | 1993-11-18 | 1994-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-19 | 1997-11-18 | 1998-05-20 | $7700.00 | Window Closed / Lapsed |