US3321991A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control mechanism for shiftable transmission system
Assignee: Linde GmbH
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Filing: 1964-07-07
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Granted: 1967-05-30
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Expires: 1984-07-07
Abstract
No abstract record available.
Inventors
- 👤 Kammer Erhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:05
CPC Classifications
F; F16; F16H; F16H47/00; F16H47/02; F16H63/00; F16H63/02; F16H63/30; F16H63/34; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19149; Y10T74/19158; Y10T74/19163
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
97 words
A TRANSMISSION SYSTEM FOR COMMUNICATING THE TORQUE OF A FLUID-OPERATED DRIVE MOTOR TO A LOAD, COMPRISING A SOURCE OF OPERATING FLUID FOR SAID MOTOR INCLUDING A HIGH-PRESSURE SUPPLY CONDUIT AND A LOW-PRESSURE RETURN CONDUIT; FIRST GEAR MEANS COUPLED WITH SAID MOTOR; SECOND GEAR MEANS COUPLED WITH SAID LOAD AND DISPOSED FOR MESHING ENGAGEMENT WITH SAID FIRST GEAR MEANS, SAID FIRST AND SECONG GEAR MEANS BEING RELATIVELY SHIFTABLE INTO AND OUT OF AN ENGAGED POSITION; CONTROL MEANS FOR RELATIVELY SHIFTING SAID FIRST AND SECOND GEAR MEANS; VALVE MEANS IN AT LEAST ONE OF SAID CONDUITS; AND LATCH MEANS
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) | 1970-05-29 | 1970-11-28 | 1971-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-29 | 1974-11-28 | 1975-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-29 | 1978-11-28 | 1979-05-30 | $7700.00 | Window Closed / Lapsed |