US2657729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Punctureproof tube and sealing material therefor
Assignee: H V HARDMAN CO Inc
•
Filing: 1950-06-27
•
Granted: 1953-11-03
•
Expires: 1970-06-27
Abstract
No abstract record available.
Inventors
- 👤 Kenneth V Hardman
- 👤 Arthur J Lang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:47
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/0681; B29D30/0685; B29C; B29C73/00; B29C73/16; B29C73/18; B29C73/20; B60; B60C; B60C19/00; B60C19/12; B60C19/127; B29C73/163; B29D2030/0686; B29D2030/0687; B29D2030/0691; B29D2030/0695; B29D2030/0697; B29L; B29L2030/00; Y; Y10; Y10S; Y10S524/00; Y10S524/925; Y10S528/00; Y10S528/931; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10666; Y10T152/10675; Y10T152/10702
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A TUBE FOR A PUNCTURE-PROOF PNEUMATIC TIRE COMPRISING A TUBULAR ELEMENT OF VULCANIZED RUBBER MATERIAL, A GUMMY MASS DISPOSED AS A LAYER OVER THE SIDE OF THE SIAD ELEMENT THAT IS TOWARDS THE ROAD DURING USE IN A TIRE, AND A SHEET OF VULCANIZED MATERIAL DISPOSED OVER THE GUMMY MASS AND ENCLOSING IT BETWEEN THE SAID SHEET AND ELEMENT, THE GUMMY MASS COMPRISING HEAT DEPOLYMERIZED RUBBER AND A GELLING AGENT AND THE GELLING AGENT BEING USED IN PROPORTION TO PRODUCE A GUMMY MASS WITH THE DEPOLYMERIZED RUBBER BUT LESS THAN THE AMOUNT CAUSING THE GUMMY MASS TO BECOME RIGID DURING USE ON LONG CONTACT WITH THE VULCANIZED MATERIAL.
Claim 2
Dependent Claim
108 words
A TUBE FOR A PUNCTURE-PROOF PNEUMATIC TIRE COMPRISING A TUBULAR ELEMENT OF VULCANIZED RUBBER MATERIAL, A GUMMY MASS DISPOSED AS A LAYER OVER THE SIDE OF THE SIAD ELEMENT THAT IS TOWARDS THE ROAD DURING USE IN A TIRE, AND A SHEET OF VULCANIZED MATERIAL DISPOSED OVER THE GUMMY MASS AND ENCLOSING IT BETWEEN THE SAID SHEET AND ELEMENT, THE GUMMY MASS COMPRISING HEAT DEPOLYMERIZED RUBBER AND A GELLING AGENT AND THE GELLING AGENT BEING USED IN PROPORTION TO PRODUCE A GUMMY MASS WITH THE DEPOLYMERIZED RUBBER BUT LESS THAN THE AMOUNT CAUSING THE GUMMY MASS TO BECOME RIGID DURING USE ON LONG CONTACT WITH THE VULCANIZED MATERIAL.
References Cited (Backward Citations)
US1137461A
Cited
US1249181A
Cited
US1237698A
Cited
US1751817A
Cited
US2255779A
Cited
US2349549A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |