Patent US3338347A successfully refreshed from Google Patents.
US3338347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic dampers for vehicle suspensions
Assignee: Girling Ltd
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Filing: 1965-09-08
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Granted: 1967-08-29
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Expires: 1985-09-08
Abstract
No abstract record available.
Inventors
- 👤 Avner David Alan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:57
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/06; F16F9/061; F16F9/32; F16F9/50; F16F9/504
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
AN HYDRAULIC DAMPER FOR VEHIVLE SUSPENSIONS COMPRISING A CYLINDER CONTAINING HYDRAULIC FLUID, A PISTON WORKING IN THE CYLINDER, CONTROLLED PASSAGE FOR THE FLOW OF FLUID BETWEEN PARTS OF THE CYLINDER ON OPPOSITE SIDES OF THE PISTON, A PISTON-ROD CARRYING THE PISTON AND EXTENDING THROUGH ONE END OF THE CYLINDER, A BLEED PASSAGE BY-PASSING THE PISTON AND INCORPORATING A PORT, A MOVABLE MASS RESPONSIVE TO INTERTIA CO-OPERATING WITH SAID PORT TO OPEN THE BLEED PASSAGE TO PREVENT THE TRANSMISSION TO A VEHIVLE OF SHOCKS DUE TO RANDOM IMPULSES AND TO RESTRICT THE BLEED PASSAGE AT A TURNED FREQUENCY OF RESPONSE THEREBY INCREASING THE DAMPING ACTION OF THE
Claim 2
Dependent Claim
106 words
AN HYDRAULIC DAMPER FOR VEHIVLE SUSPENSIONS COMPRISING A CYLINDER CONTAINING HYDRAULIC FLUID, A PISTON WORKING IN THE CYLINDER, CONTROLLED PASSAGE FOR THE FLOW OF FLUID BETWEEN PARTS OF THE CYLINDER ON OPPOSITE SIDES OF THE PISTON, A PISTON-ROD CARRYING THE PISTON AND EXTENDING THROUGH ONE END OF THE CYLINDER, A BLEED PASSAGE BY-PASSING THE PISTON AND INCORPORATING A PORT, A MOVABLE MASS RESPONSIVE TO INTERTIA CO-OPERATING WITH SAID PORT TO OPEN THE BLEED PASSAGE TO PREVENT THE TRANSMISSION TO A VEHIVLE OF SHOCKS DUE TO RANDOM IMPULSES AND TO RESTRICT THE BLEED PASSAGE AT A TURNED FREQUENCY OF RESPONSE THEREBY INCREASING THE DAMPING ACTION OF THE
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) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |