US3113644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shock absorber
Assignee: ZF Friedrichshafen AG
•
Filing: 1961-06-14
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Granted: 1963-12-10
•
Expires: 1981-06-14
Abstract
No abstract record available.
Inventors
- 👤 Wossner Felix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:29
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/32; F16F9/3207; F16F9/3214; F16F9/34; F16F9/3405; F16F9/348; F16F9/3481; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7771; Y10T137/7837; Y10T137/7879; Y10T137/7888; Y10T137/789
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
IN AN OSCILLATION DAMPING DEVICE OF THE PISTON-ANDCYLINDER TYPE, IN COMBINATION, A PISTON HAVING TWO FACES AND FORMED WITH A CONDUIT HAVING RESPECTIVE ORIFICES IN SAID FACES; AND A RESILIENT PLATE MEMBER MOUNTED ON ONE OF SAID FACES AND NORMALLY IN A POSITION TO OBSTRUCT A MAJOR PORTION OF THE ORIFICE IN SAID ONE FACE, AND TO LEAVE A MINOR PORTION THEREOF UNOBSTRUCTED FOR THE PASSAGE OF FLUID THROUGH SAID CONDUIT, SAID PLATE MEMBER BEING RESPONSIVE TO A PREDETERMINED PRESSURE OF SAID FLUID TO MOVE AWAY FROM SAID ORIFICE, SAID PLATE MEMBER IN THE NORMAL POSITION THEREOF HAVING A FREE EDGE PORTION INTERSECTING SAID ORIFICE AND DEFINING A BOUNDARY BETWEEN SAID MAJOR PORTION AND SAID MINOR PORTION, THE LENGTH OF SAID INTERSECTING EDGE PORTION BEING NOT MORE THAN TWICE THE LARGEST DIMENSION OF SAID MINOR PORTION IN A DIRECTION PERPENDICULARLY AWAY FROM SAID EDGE PORTION.
Claim 2
Dependent Claim
145 words
IN AN OSCILLATION DAMPING DEVICE OF THE PISTON-ANDCYLINDER TYPE, IN COMBINATION, A PISTON HAVING TWO FACES AND FORMED WITH A CONDUIT HAVING RESPECTIVE ORIFICES IN SAID FACES; AND A RESILIENT PLATE MEMBER MOUNTED ON ONE OF SAID FACES AND NORMALLY IN A POSITION TO OBSTRUCT A MAJOR PORTION OF THE ORIFICE IN SAID ONE FACE, AND TO LEAVE A MINOR PORTION THEREOF UNOBSTRUCTED FOR THE PASSAGE OF FLUID THROUGH SAID CONDUIT, SAID PLATE MEMBER BEING RESPONSIVE TO A PREDETERMINED PRESSURE OF SAID FLUID TO MOVE AWAY FROM SAID ORIFICE, SAID PLATE MEMBER IN THE NORMAL POSITION THEREOF HAVING A FREE EDGE PORTION INTERSECTING SAID ORIFICE AND DEFINING A BOUNDARY BETWEEN SAID MAJOR PORTION AND SAID MINOR PORTION, THE LENGTH OF SAID INTERSECTING EDGE PORTION BEING NOT MORE THAN TWICE THE LARGEST DIMENSION OF SAID MINOR PORTION IN A DIRECTION PERPENDICULARLY AWAY FROM SAID EDGE PORTION.
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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) | 1966-12-09 | 1967-06-10 | 1967-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-09 | 1971-06-10 | 1971-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-09 | 1975-06-10 | 1975-12-10 | $7700.00 | Window Closed / Lapsed |