US2728701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction element and method of making same
Assignee: Thermoid Co
•
Filing: 1951-08-28
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Granted: 1955-12-27
•
Expires: 1971-08-28
Abstract
No abstract record available.
Inventors
- 👤 Wirth Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:20
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/02; F16D69/021; F16D69/022; B; B29; B29C; B29C43/00; B29C43/02; B29C43/14; B29C43/20; B29C43/203; B29C70/00; B29C70/04; B29C70/06; B29C70/08; B29C70/081; B29C70/28; B29C70/30; B29C70/34; B29C70/347; B29C70/40; B29C70/42; B29C70/46; B29K; B29K2105/00; B29K2105/06; B29K2105/08; B29K2105/10; B29K2105/12; B29L; B29L2031/00; B29L2031/16; Y; Y10; Y10T; Y10T156/00; Y10T156/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
75 words
A FRICTION ELEMENT COMPRISING A PLURALITY OF IMPREGNATED STRANDS ARRANGED IN A MANNER TO FORM INTERSTICES BETWEEN SAID STRANDS, A MASS OF LOOSE IMPREGNATED FIBERS IN RANDON ARRAY ADJACENT SAID STRANDS, A PORTION OF SAID FIBERS EXTENDING INTO AT LEAST SOME OF SAID INTERSTICES, SAID STRANDS AND SAID FIBERS BEING COMPACTED INTO A UNITARY STRUCTURE, THE FACE OF SAID ELEMENT BEING COMPOSED PRINCIPALLY OF SAID STRANDS AND THE BACKING BEING COMPOSED PRINCIPALLY OF SAID FIBERS.
Claim 2
Dependent Claim
75 words
A FRICTION ELEMENT COMPRISING A PLURALITY OF IMPREGNATED STRANDS ARRANGED IN A MANNER TO FORM INTERSTICES BETWEEN SAID STRANDS, A MASS OF LOOSE IMPREGNATED FIBERS IN RANDON ARRAY ADJACENT SAID STRANDS, A PORTION OF SAID FIBERS EXTENDING INTO AT LEAST SOME OF SAID INTERSTICES, SAID STRANDS AND SAID FIBERS BEING COMPACTED INTO A UNITARY STRUCTURE, THE FACE OF SAID ELEMENT BEING COMPOSED PRINCIPALLY OF SAID STRANDS AND THE BACKING BEING COMPOSED PRINCIPALLY OF SAID FIBERS.
Claim 3
Independent Claim
32 words
THE METHOD OF MAKING A FRICTION ELEMENT WHICH COMPRISES PLACING ADJACENT A PLURALITY OF IMPREGNATED STRANDS A MASS OF LOSSE IMPREGNATED FIBERS AND COMPACTING SAID STRANDS AND FIBERS INTO A UNITARY STRUCTURE.
Claim 4
Independent Claim
32 words
THE METHOD OF MAKING A FRICTION ELEMENT WHICH COMPRISES PLACING ADJACENT A PLURALITY OF IMPREGNATED STRANDS A MASS OF LOSSE IMPREGNATED FIBERS AND COMPACTING SAID STRANDS AND FIBERS INTO A UNITARY STRUCTURE.
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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) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |