US3353495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic accumulator bleed means
Assignee: Caterpillar Inc
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Filing: 1966-03-02
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Granted: 1967-11-21
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Expires: 1986-03-02
Abstract
No abstract record available.
Inventors
- 👤 Donald L Bianchetta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:51
CPC Classifications
F; F15; F15B; F15B1/00; F15B1/02; F15B1/025; B; B60; B60T; B60T13/00; B60T13/10; B60T13/12; B60T13/14; B60T13/148; B62; B62D; B62D5/00; B62D5/06; B62D5/07; F15B1/022; F15B1/027; F15B1/033; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/2557; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/264
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
IN A VEHICLE HYDRAULIC SYSTEM INCLUDING AN ACCUMULATOR WHICH IS NORMALLY PRESSURIZED DURING OPERATION OF THE VEHICLE, MEANS TO BLEED PRESSURE FROM THE ACCUMULATOR COMPRISING TWO VALVES IN SERIES, MEANS NORMALLY HOLDING SAID VALVES CLOSED DURING OPERATION OF THE VEHICLE, MEANS FOR OPENING ONE OF SAID VALVES WHEN THE VEHICLE ENGINE STOPS AND MEANS FOR OPENING THE OTHER VALVE IN RESPONSE TO A MANUAL ADJUSTMENT NORMALLY MADE WHEN THE VEHICLE IS TAKEN OF OPERATION.
Claim 2
Dependent Claim
74 words
IN A VEHICLE HYDRAULIC SYSTEM INCLUDING AN ACCUMULATOR WHICH IS NORMALLY PRESSURIZED DURING OPERATION OF THE VEHICLE, MEANS TO BLEED PRESSURE FROM THE ACCUMULATOR COMPRISING TWO VALVES IN SERIES, MEANS NORMALLY HOLDING SAID VALVES CLOSED DURING OPERATION OF THE VEHICLE, MEANS FOR OPENING ONE OF SAID VALVES WHEN THE VEHICLE ENGINE STOPS AND MEANS FOR OPENING THE OTHER VALVE IN RESPONSE TO A MANUAL ADJUSTMENT NORMALLY MADE WHEN THE VEHICLE IS TAKEN OF OPERATION.
References Cited (Backward Citations)
US2641106A
Cited
US2850878A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |