US2998343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making a hydraulic diaphragm
Assignee: Motors Liquidation Co
•
Filing: 1958-01-02
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Granted: 1961-08-29
•
Expires: 1978-01-02
Abstract
No abstract record available.
Inventors
- 👤 Gold John
- 👤 Chester J Wilkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:57
CPC Classifications
B; B29; B29D; B29D99/00; B29D99/005; B29L; B29L2031/00; B29L2031/755; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31739; Y10T428/31743; Y10T428/31855; Y10T428/31909; Y10T428/31924; Y10T442/00; Y10T442/60; Y10T442/674
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
IN A PROCESS FOR MAKING A HYDRAULIC DIAPHRAGM, THE STEPS COMPRISING FORMING A SHEET INCLUDING A POLYAMIDE FABRIC LAYER IMPREGNATED AND COATED ON EACH SIDE THEREOF WITH A LAYER OF UNCURED BUTADIENE-ACRYLONITRILE RUBBER OF SUBSTANTIALLY EQUAL THICKNESS, PARTIALLY CURING SAID RUBBER, MOLDING AN ANNULAR FOLD IN SAID SHEET BETWEEN COMPLEMENTARY DIE MEMBERS, SAID RUBBER BEING CURED TO AN EXTENT SUFFICIENT TO PREVENT SUBSTANTIAL DISPLACEMENT OF THE RUBBER RELATIVE TO THE FABRIC IN THE MOLDING PROCESS,
Claim 2
Dependent Claim
75 words
IN A PROCESS FOR MAKING A HYDRAULIC DIAPHRAGM, THE STEPS COMPRISING FORMING A SHEET INCLUDING A POLYAMIDE FABRIC LAYER IMPREGNATED AND COATED ON EACH SIDE THEREOF WITH A LAYER OF UNCURED BUTADIENE-ACRYLONITRILE RUBBER OF SUBSTANTIALLY EQUAL THICKNESS, PARTIALLY CURING SAID RUBBER, MOLDING AN ANNULAR FOLD IN SAID SHEET BETWEEN COMPLEMENTARY DIE MEMBERS, SAID RUBBER BEING CURED TO AN EXTENT SUFFICIENT TO PREVENT SUBSTANTIAL DISPLACEMENT OF THE RUBBER RELATIVE TO THE FABRIC IN THE MOLDING PROCESS,
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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) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |