Patent US3289546A successfully refreshed from Google Patents.
US3289546A
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Hydraulic actuating mechanism
Assignee: Caterpillar Inc
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Filing: 1964-08-11
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Granted: 1966-12-06
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Expires: 1984-08-11
Abstract
No abstract record available.
Inventors
- 👤 Rodney R Erickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:22
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/34; E02F3/3405; E02F3/3411; E02F3/36; E02F3/42; E02F3/43; E02F3/431; E02F3/432; E02F3/434; F; F15; F15B; F15B11/00; F15B11/16; F15B11/20; F15B21/00; F15B21/04; F15B21/044
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A CONTROL DEVICE FOR A FLUID CIRCUIT COMPRISING A MOVEABLE SUPPORT, A FLUID MOTOR BEING ARRANGED TO IMPART MOVEMENT TO SAID SUPPORT, A VALVE MECHANISM FOR COMMUNICATING PRESSURE FLUID TO SAID MOTOR TO CAUSE OPERATION THEREOF, MEANS INCLUDING A PRESSURE OPERATED DEVICE CONNECTED TO THE CIRCUIT FOR MAINTAINING SAID VALVE MECHANISM IN A POSITION COMMUNICATING PRESSURE
Claim 2
Dependent Claim
56 words
A CONTROL DEVICE FOR A FLUID CIRCUIT COMPRISING A MOVEABLE SUPPORT, A FLUID MOTOR BEING ARRANGED TO IMPART MOVEMENT TO SAID SUPPORT, A VALVE MECHANISM FOR COMMUNICATING PRESSURE FLUID TO SAID MOTOR TO CAUSE OPERATION THEREOF, MEANS INCLUDING A PRESSURE OPERATED DEVICE CONNECTED TO THE CIRCUIT FOR MAINTAINING SAID VALVE MECHANISM IN A POSITION COMMUNICATING PRESSURE
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) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |