Patent US4377620A successfully refreshed from Google Patents.
US4377620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gut for tennis racket and the like and method of making same
Assignee: Individual
•
Filing: 1982-06-21
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Granted: 1983-03-22
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Expires: 2002-06-21
Abstract
Abstract Improved gut for use on rackets for tennis, badminton, and the like, comprising a gut body and a coating film on the gut body, the film being obtained by drying a liquid formed by dispersing minute particles of ethylene tetrafluoride resin either in a solvent or a molten resin.
Inventors
- 👤 Edward Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:19
CPC Classifications
A; A63; A63B; A63B51/00; A63B51/02; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2927; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969; Y10T428/298
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
36 words
Gut for a tennis racket or the like comprising a gut body and a coating film on the surface of said gut body, said film being a dried liquid containing minute particles of ethylene tetrafluoride resin.
Claim 2
Dependent Claim
36 words
Gut for a tennis racket or the like comprising a gut body and a coating film on the surface of said gut body, said film being a dried liquid containing minute particles of ethylene tetrafluoride resin.
Claim 3
Dependent Claim
21 words
Gut as defined in claim 1 wherein said particles are of a diameter in the order of 0.1 to 10 microns.
Claim 4
Dependent Claim
19 words
Gut as defined in claim 1 wherein said particles are of a diameter in the order of 0.3 microns.
Claim 5
Dependent Claim
21 words
Gut as defined in claim 1 wherein said dried liquid was a solution of said ethylene tetrafluoride particles in a solvent.
Claim 6
Dependent Claim
22 words
Gut as defined in claim 1 wherein said dried liquid was a mixture of said ethylene tetrafluoride particles in a molten resin.
Claim 7
Independent Claim
37 words
A method of forming a gut for a tennis racket or the like comprising applying to a gut body a coating film of minute particles of ethylene tetrafluoride resin dispersed in a liquid, and drying the liquid.
Claim 8
Independent Claim
37 words
A method of forming a gut for a tennis racket or the like comprising applying to a gut body a coating film of minute particles of ethylene tetrafluoride resin dispersed in a liquid, and drying the liquid.
Claim 9
Dependent Claim
25 words
A method as defined in claim 6 including dispersing the particles in a solvent prior to applying, and permitting the solvent to evaporate after applying.
Claim 10
Dependent Claim
28 words
A method as defined in claim 6 including dispersing the particles in a molten resin prior to applying, and permitting the melt to cool and solidify after applying.
Claim 11
Dependent Claim
22 words
A method as defined in claim 6 wherein the particles are of a diameter in the order of 0.1 to 10 microns.
Claim 12
Dependent Claim
20 words
A method as defined in claim 6 wherein the particles are of a diameter in the order of 0.3 microns.
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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) | 1986-03-21 | 1986-09-20 | 1987-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-21 | 1990-09-20 | 1991-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-21 | 1994-09-20 | 1995-03-22 | $7700.00 | Window Closed / Lapsed |