US3638706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Macrofilamentary tire yarns
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1969-11-03
•
Granted: 1972-02-01
•
Expires: 1989-11-03
Abstract
Abstract A pneumatic tire reinforcement element comprising a single bundle of continuous macrofilaments of synthetic polymeric material selected from the group consisting of polyester and polyamide, wherein each macrofilament has a denier in the range 100 to 1,500, and the bundle has a total denier of 1,000 to 10,000 and a twist level not exceeding 4 turns per inch.
Inventors
- 👤 Donald James Wilson
- 👤 Derek Kenyon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:15
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/44; D02G3/48; D10; D10B; D10B2331/00; D10B2331/02; D10B2331/04; Y; Y10; Y10S; Y10S57/00; Y10S57/902
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
21 words
A reinforcement element according to claim 1, wherein the total denier of the element is in the range 2,000 to 5,000.
Claim 2
Dependent Claim
17 words
A reinforcement element according to claim 1, wherein the range of macrofilament denier is 200 to 700.
Claim 3
Dependent Claim
17 words
A reinforcement element according to claim 1, wherein the range of macrofilament denier is 400 to 600.
Claim 4
Dependent Claim
17 words
A reinforcement element according to claim 1, wherein the macrofilaments in the element have the same denier.
Claim 5
Dependent Claim
21 words
A reinforcement element according to claim 1, wherein the number of macrofilaments is at least three and not greater than 20.
Claim 6
Dependent Claim
32 words
A synthetic filamentary element comprising seven synthetic macrofilaments, each of which has the same denier in the range 400 to 600, and the yarn has inserted therein about 2 turns per inch.
Claim 7
Dependent Claim
24 words
A reinforcing element according to claim 7, wherein the macrofilaments are made of a material selected from the group consisting of polyester and polyamide.
Claim 8
Dependent Claim
68 words
A pneumatic tire comprising a tire building member incorporating reinforcement elements each of which comprises a single bundle of continuous macrofilaments of synthetic polymeric material selected from the group consisting of polyester and polyamide, and wherein each macrofilament has a denier in the range 100 to 1,500, and each bundle has a total denier of 1,000 to 10,000 and a twist level not exceeding 4 turns per inch.
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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) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |