US3175818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic buffers
Assignee: Wildt Mellor Bromley Ltd
•
Filing: 1962-12-26
•
Granted: 1965-03-30
•
Expires: 1982-12-26
Abstract
No abstract record available.
Inventors
- 👤 Croucher Antony Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:50
CPC Classifications
F; F16; F16F; F16F13/00; D; D03; D03D; D03D49/00; D03D49/24; D03D49/26; D03D49/36; F16F9/00; F16F9/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A SELF-RECUPERATING HYDRAULIC SHOCK ABSORBER COMPRISING A HOUSING INCLUDING A SEALED CHAMBER, A PLUNGER EXTENDING FROM OUTSIDE THE HOUSING INTO THE SAID CHAMBER, A CUP IN THE SAID CHAMBER TO CO-OPERATE WITH THE PLUNGER UPON DEPRESSION THEREOF INTO THE HOUSING AND CHAMBER TO HYDRAULICALLY DECELERATE AND CUSHION THE PLUNGER BY A SQUELCH ACTION, AND A BODY OF EXPANDED CLOSED CELL ELASTOMERIC MATERIAL IN A COMPRESSED STATE IN THE SAID CHAMBER, THE FREE SPACE WITHIN THE SAID CHAMBER BEING FILLED WITH LIQUID WHEREBY THE COMPRESSED BODY OF ELASTOMERIC MATERIAL ACTS AS A SOURCE OF OVER PRESSURE WITHIN THE CHAMBER TO URGE THE PLUNGER OUTWARDS THEREFROM DURING RECUPERATION OF THE SHOCK ABSORBER.
Claim 2
Dependent Claim
110 words
A SELF-RECUPERATING HYDRAULIC SHOCK ABSORBER COMPRISING A HOUSING INCLUDING A SEALED CHAMBER, A PLUNGER EXTENDING FROM OUTSIDE THE HOUSING INTO THE SAID CHAMBER, A CUP IN THE SAID CHAMBER TO CO-OPERATE WITH THE PLUNGER UPON DEPRESSION THEREOF INTO THE HOUSING AND CHAMBER TO HYDRAULICALLY DECELERATE AND CUSHION THE PLUNGER BY A SQUELCH ACTION, AND A BODY OF EXPANDED CLOSED CELL ELASTOMERIC MATERIAL IN A COMPRESSED STATE IN THE SAID CHAMBER, THE FREE SPACE WITHIN THE SAID CHAMBER BEING FILLED WITH LIQUID WHEREBY THE COMPRESSED BODY OF ELASTOMERIC MATERIAL ACTS AS A SOURCE OF OVER PRESSURE WITHIN THE CHAMBER TO URGE THE PLUNGER OUTWARDS THEREFROM DURING RECUPERATION OF THE SHOCK ABSORBER.
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) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |