Patent US3287008A successfully refreshed from Google Patents.
US3287008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shock absorbers
Assignee: Individual
•
Filing: 1964-12-02
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Granted: 1966-11-22
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Expires: 1984-12-02
Abstract
No abstract record available.
Inventors
- 👤 Fernandez Pedro Ruiz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:52
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/06; F16F9/08; F16F9/088
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
A HYDRO-PNEUMATIC SHOCK ABSORBER HAVING A FLUID CASING DIVIDED INTO A WORK CHAMBER ADAPTED TO BE FILLED WITH DAMPING LIQUID AND A COMPENSATION CHAMBER ADAPTED TO BE FILLED WITH GAS UNDER PRESSURE, A PARTITION SEPARATING SAID CHAMBERS AND CAPABLE OF YIELDING AT LEAST IN PART DURING OPERATION OF THE SHOCK ABSORBER, FILLING SAID SEALING MEANS FOR SAID COMPENSATION CHAMBER COMPRISING AN OPENING THROUGH THE WALL OF SAID CASING, AN ANNULAR SLEEVE DEVICE MOUNTED WITHIN SAID CASING ADJACENT THE OPENING IN THE WALL THEREOF, AND ELASTIC ZONE IN SAID SLEEVE DEVICE IN GENERAL REGISTRY WITH SAID OPENING, SAID ZONE ADAPTED TO YIELD INWARDLY OF THE CASING UPON EXTERNAL APPLICATION OF GAS PRESSURE TO THE OPENING AND UNCOVER THE INNER ORIFICE OF THE OPENING FOR THE ADMISSION OF GAS, AND TO CLOSE AGAINST THE INNER WALL OF THE CASING AND SEAL THE ORIFICE UPON RELEASE OF THE EXTERNAL APPLICATION OF PRESSURE TO SEAL SAID OPENING, BY VIRTUE OF ITS ELASTIC RECOVERY AND OF THE PRESSURE OF THE GAS WITHIN THE CHAMBER.
Claim 2
Dependent Claim
169 words
A HYDRO-PNEUMATIC SHOCK ABSORBER HAVING A FLUID CASING DIVIDED INTO A WORK CHAMBER ADAPTED TO BE FILLED WITH DAMPING LIQUID AND A COMPENSATION CHAMBER ADAPTED TO BE FILLED WITH GAS UNDER PRESSURE, A PARTITION SEPARATING SAID CHAMBERS AND CAPABLE OF YIELDING AT LEAST IN PART DURING OPERATION OF THE SHOCK ABSORBER, FILLING SAID SEALING MEANS FOR SAID COMPENSATION CHAMBER COMPRISING AN OPENING THROUGH THE WALL OF SAID CASING, AN ANNULAR SLEEVE DEVICE MOUNTED WITHIN SAID CASING ADJACENT THE OPENING IN THE WALL THEREOF, AND ELASTIC ZONE IN SAID SLEEVE DEVICE IN GENERAL REGISTRY WITH SAID OPENING, SAID ZONE ADAPTED TO YIELD INWARDLY OF THE CASING UPON EXTERNAL APPLICATION OF GAS PRESSURE TO THE OPENING AND UNCOVER THE INNER ORIFICE OF THE OPENING FOR THE ADMISSION OF GAS, AND TO CLOSE AGAINST THE INNER WALL OF THE CASING AND SEAL THE ORIFICE UPON RELEASE OF THE EXTERNAL APPLICATION OF PRESSURE TO SEAL SAID OPENING, BY VIRTUE OF ITS ELASTIC RECOVERY AND OF THE PRESSURE OF THE GAS WITHIN THE CHAMBER.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |