US3322393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydro-pneumatic shock absorber and jacking device
Assignee: Electro Hydraulics Ltd
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Filing: 1965-10-01
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Granted: 1967-05-30
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Expires: 1985-10-01
Abstract
No abstract record available.
Inventors
- 👤 Neilson Christopher Berna Vere
- 👤 Perdue Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:21
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A HYDRO-PNEUMATIC SHOCK ABSORBER COMPRISING A FIRST TUBE AND A SECOND TUBE, SAID FIRST BEING CLOSED AT ONE END AND SLIDABLE IN SAID SECOND TUBE, A FLUID CONNECTION BETWEEN SAID FIRST AND SECOND TUBES, ENERGY CONVERSION DAMPING MEANS INCLUDED IN SAID FLUID CONNECTION, A THIRD TUBE CLOSED AT ONE END AND HAVING SAID SECOND TUBE SLIDABLE THEREIN, A CHAMBER FOR RELATIVELY COMPRESSIBLE FLUID AND A CHAMBER FOR RELATIVELY INCOMPRESSIBLE FLUID BOTH WITHIN SAID FIRST TUBE, A CHAMBER FOR RELATIVELY INCOMPRESSIBLE FLUID WITHIN SAID SECOND TUBE AND A CHAMBER FORMED BETWEEN SAID SECOND AND THIRD TUBES, SAID LATTER CHAMBER BEING IN COMMUNICATION WITH SAID CHAMBER FOR RELATIVELY INCOMPRESSIBLE FLUID WITHIN SAID SECOND TUBE.
Claim 2
Dependent Claim
112 words
A HYDRO-PNEUMATIC SHOCK ABSORBER COMPRISING A FIRST TUBE AND A SECOND TUBE, SAID FIRST BEING CLOSED AT ONE END AND SLIDABLE IN SAID SECOND TUBE, A FLUID CONNECTION BETWEEN SAID FIRST AND SECOND TUBES, ENERGY CONVERSION DAMPING MEANS INCLUDED IN SAID FLUID CONNECTION, A THIRD TUBE CLOSED AT ONE END AND HAVING SAID SECOND TUBE SLIDABLE THEREIN, A CHAMBER FOR RELATIVELY COMPRESSIBLE FLUID AND A CHAMBER FOR RELATIVELY INCOMPRESSIBLE FLUID BOTH WITHIN SAID FIRST TUBE, A CHAMBER FOR RELATIVELY INCOMPRESSIBLE FLUID WITHIN SAID SECOND TUBE AND A CHAMBER FORMED BETWEEN SAID SECOND AND THIRD TUBES, SAID LATTER CHAMBER BEING IN COMMUNICATION WITH SAID CHAMBER FOR RELATIVELY INCOMPRESSIBLE FLUID WITHIN SAID SECOND TUBE.
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) | 1970-05-29 | 1970-11-28 | 1971-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-29 | 1974-11-28 | 1975-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-29 | 1978-11-28 | 1979-05-30 | $7700.00 | Window Closed / Lapsed |