US3217897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic draft gear arrangement
Assignee: Pullman Standard Inc
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Filing: 1963-09-23
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Granted: 1965-11-16
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Expires: 1983-09-23
Abstract
No abstract record available.
Inventors
- 👤 Peterson William Hartin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:23
CPC Classifications
B; B61; B61G; B61G9/00; B61G9/04; B61G9/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A DOUBLE ACTING HYDRAULIC CUSHION DEVICE FOR A DRAFT GEAR ARRANGEMENT SAID HYDRAULIC DEVICE COMPRISING A HYDRAULIC FLUID FILLED HOUSING FORMING A RESERVOIR, A HYDRAULIC FLUID FILLED CYLINDER DISPOSED WITHIN SAID RESERVOIR, ORIFICE MEANS FORMED IN SAID CYLINDER PROVIDING COMMUNICATION BETWEEN THE BORE OF SAID CYLINDER AND SAID RESERVOIR, A FLUID DISPLACEMENT MEANS RECIPROCABLE WITHIN SAID CYLINDER FROM A NEUTRAL POSITION INTERMEDIATE THE ENDS OF SAID CYLINDER FOR DISPLACING FLUID THROUGH SAID ORIFICES FROM ONE SIDE OF SAID FLUID DISPLACEMENT MEANS TO THE OTHER SIDE THEREOF VIA SAID RESERVIOR, AND SURGE CHAMBER MEANS IN OPERATIVE ASSOCIATION WITH SAID RESERVOIR FOR PROVIDING AN AUXILIARY VOLUME ACCOMMODATING THE EXCESSIVE DISPLACED FLUID WHICH IS NOT DISPLACED TO SAID OTHER SIDE OF SAID FLUID DISPLACEMENT MEANS DURING MOVEMENT THEREOF FROM SAID NEUTRAL POSITION.
Claim 2
Dependent Claim
129 words
A DOUBLE ACTING HYDRAULIC CUSHION DEVICE FOR A DRAFT GEAR ARRANGEMENT SAID HYDRAULIC DEVICE COMPRISING A HYDRAULIC FLUID FILLED HOUSING FORMING A RESERVOIR, A HYDRAULIC FLUID FILLED CYLINDER DISPOSED WITHIN SAID RESERVOIR, ORIFICE MEANS FORMED IN SAID CYLINDER PROVIDING COMMUNICATION BETWEEN THE BORE OF SAID CYLINDER AND SAID RESERVOIR, A FLUID DISPLACEMENT MEANS RECIPROCABLE WITHIN SAID CYLINDER FROM A NEUTRAL POSITION INTERMEDIATE THE ENDS OF SAID CYLINDER FOR DISPLACING FLUID THROUGH SAID ORIFICES FROM ONE SIDE OF SAID FLUID DISPLACEMENT MEANS TO THE OTHER SIDE THEREOF VIA SAID RESERVIOR, AND SURGE CHAMBER MEANS IN OPERATIVE ASSOCIATION WITH SAID RESERVOIR FOR PROVIDING AN AUXILIARY VOLUME ACCOMMODATING THE EXCESSIVE DISPLACED FLUID WHICH IS NOT DISPLACED TO SAID OTHER SIDE OF SAID FLUID DISPLACEMENT MEANS DURING MOVEMENT THEREOF FROM SAID NEUTRAL POSITION.
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) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |