Patent US3304076A successfully refreshed from Google Patents.
US3304076A
Expired / Lapsed
US
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Suspension unit
Assignee: LeTourneau Westinghouse Co
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Filing: 1964-12-31
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Granted: 1967-02-14
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Expires: 1984-12-31
Abstract
No abstract record available.
Inventors
- 👤 Richard A Doversberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:40
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A SUSPENSION UNIT FOR A VEHICLE COMPRISING A CYLINDER, A PISTON, HAVING A ROD PORTION RECIPROCABLY RETAINED WITHIN SAID CYLINDER AND DEFINING THEREWITH A HEAD CHAMBER AND A ROD CHAMBER, A FLOATING PISTON RECIPROCABLY RETAINED IN ONE OF SAID PISTON AND SAID CYLINDER, AND DEFINING THEREWITH A THIRD CHAMBER, SAID ROD CHAMBER BEING FILLED WITH A NON-COMPRESSIBLE FLUID, SAID HEAD CHAMBER BEING FILLED WITH A NON-COMPRESSIBLE AND COMPRESSIBLE FLUIDS UNDER PRESSURE, MEANS FOR PERMITTING THE FLOW OF NON-COMPRESSIBLE FLUID BETWEEN SAID HEAD AND ROD CHAMBERS,
Claim 2
Dependent Claim
85 words
A SUSPENSION UNIT FOR A VEHICLE COMPRISING A CYLINDER, A PISTON, HAVING A ROD PORTION RECIPROCABLY RETAINED WITHIN SAID CYLINDER AND DEFINING THEREWITH A HEAD CHAMBER AND A ROD CHAMBER, A FLOATING PISTON RECIPROCABLY RETAINED IN ONE OF SAID PISTON AND SAID CYLINDER, AND DEFINING THEREWITH A THIRD CHAMBER, SAID ROD CHAMBER BEING FILLED WITH A NON-COMPRESSIBLE FLUID, SAID HEAD CHAMBER BEING FILLED WITH A NON-COMPRESSIBLE AND COMPRESSIBLE FLUIDS UNDER PRESSURE, MEANS FOR PERMITTING THE FLOW OF NON-COMPRESSIBLE FLUID BETWEEN SAID HEAD AND ROD CHAMBERS,
References Cited (Backward Citations)
US2769632A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |