US2803283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Repair patches for rubber tires and inner tubes
Assignee: Individual
•
Filing: 1953-08-24
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Granted: 1957-08-20
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Expires: 1973-08-24
Abstract
No abstract record available.
Inventors
- 👤 Gruber Willy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:31
CPC Classifications
B; B29; B29C; B29C73/00; B29C73/04; B29C73/10; B29L; B29L2030/00; Y; Y10; Y10S; Y10S528/00; Y10S528/93; Y10T; Y10T152/00; Y10T152/10; Y10T152/10882; Y10T428/00; Y10T428/20; Y10T428/21; Y10T428/215
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A PATCH MATERIAL FOR THE RAPAIR OF RUBBER ARTICLES COMPRISING, IN COMBINATION, A MULTILAYER BODY COMPRISING AN OUTER ADHESIVE LAYER OF NON-CULCANIZED RUBBER HAVING SULFUR DISTRIBUTED THERETHROUGH, SAID NON-VULCANIZED RUBBER BEING ADAPTED TO BE HARDENED BY SAID SULFUR UPON CONTACT OF SAID LAYER VULCANIZATION ACCELERATORS, AND ADJACENT TO SAID ADHESIVE LAYER A LAYER OF VULCANIZED RUBBER CONTAINING BETWEEN 0.1-1.0% BY WEIGHT OF O-TOLYLBIGUANIDE AS VULCANIZATION ACCELERATOR AND BETWEEN 0.5-2.5% BY WEIGHT OF AT LEAST ONE RUBBER-SOLUBLE VULCANIZATION ACCELERATOR, WHEREBY MIGRATION OF VULCANIZATION ACCELERATORS INCLUDING SAID RUBBER LAYER VULCANIZATION ACCELERATOR FROM SAID VULCANIZED RUBBER LAYER TO SAID ADHESIVE LAYER IS PREVENTED DUE TO THE PRESENCE IN SAID VULCANIZED RUBBER LAYER OF SAID O-TOLYL-BIGUANIDE SO THAT SAID ADHESIVE LAYER REMAINS UNHARDEDED AND READY FOR USE EVEN UPON PROLONGED STORAGE OF SAID PATCH MATERIAL.
Claim 2
Dependent Claim
131 words
A PATCH MATERIAL FOR THE RAPAIR OF RUBBER ARTICLES COMPRISING, IN COMBINATION, A MULTILAYER BODY COMPRISING AN OUTER ADHESIVE LAYER OF NON-CULCANIZED RUBBER HAVING SULFUR DISTRIBUTED THERETHROUGH, SAID NON-VULCANIZED RUBBER BEING ADAPTED TO BE HARDENED BY SAID SULFUR UPON CONTACT OF SAID LAYER VULCANIZATION ACCELERATORS, AND ADJACENT TO SAID ADHESIVE LAYER A LAYER OF VULCANIZED RUBBER CONTAINING BETWEEN 0.1-1.0% BY WEIGHT OF O-TOLYLBIGUANIDE AS VULCANIZATION ACCELERATOR AND BETWEEN 0.5-2.5% BY WEIGHT OF AT LEAST ONE RUBBER-SOLUBLE VULCANIZATION ACCELERATOR, WHEREBY MIGRATION OF VULCANIZATION ACCELERATORS INCLUDING SAID RUBBER LAYER VULCANIZATION ACCELERATOR FROM SAID VULCANIZED RUBBER LAYER TO SAID ADHESIVE LAYER IS PREVENTED DUE TO THE PRESENCE IN SAID VULCANIZED RUBBER LAYER OF SAID O-TOLYL-BIGUANIDE SO THAT SAID ADHESIVE LAYER REMAINS UNHARDEDED AND READY FOR USE EVEN UPON PROLONGED STORAGE OF SAID PATCH MATERIAL.
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) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |