US3209783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control valve for a hydraulic control system
Assignee: International Motors LLC
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Filing: 1962-05-14
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Granted: 1965-10-05
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Expires: 1982-05-14
Abstract
No abstract record available.
Inventors
- 👤 Pusch Gerhard
- 👤 Henninghans Franz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:52
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F15B13/04; A; A01; A01B; A01B63/00; A01B63/02; A01B63/10; A01B63/111; A01B63/1117; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/86694; Y10T137/87169; Y10T137/87177; Y10T137/87185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
IN A CONTROL SYSTEM FOR USE WITH A SOURCE OF FLUID UNDER PRESSURE, A FLUID RESERVOIR, AND A FLUID-OPERATED DEVICE, THE COMBINATION COMPRISING: A HOUSING DEFINING A BORE, A VALVE SPOOL MECHANICALLY MOVABLE IN SAID BORE FROM A NEUTRAL POSITION TOWARD A FIRST ACTUATING POSITION ADAPTED TO COMMUNICATE THE SOURCE WITH THE DEVICE AND TOWARD A SECOND ACTUATING POSITION ADAPTED TO COMMUNICATE THE DEVICE WITH THE RESERVOIR, AND MEANS FOR MECHANICALLY MOVING SAID VALVE SPOOL IN SAID BORE, SAID VALVE SPOOL INCLUDING FLUID PRESSURE RESPONSIVE MEANS FOR MOVING SAID VALVE SPOOL TOWARD SAID FIRST ACTUATING POSITION UPON MECHNICAL MOVEMENT THEREOF TOWARD SAID FIRST ACTUATING POSITION.
Claim 2
Dependent Claim
105 words
IN A CONTROL SYSTEM FOR USE WITH A SOURCE OF FLUID UNDER PRESSURE, A FLUID RESERVOIR, AND A FLUID-OPERATED DEVICE, THE COMBINATION COMPRISING: A HOUSING DEFINING A BORE, A VALVE SPOOL MECHANICALLY MOVABLE IN SAID BORE FROM A NEUTRAL POSITION TOWARD A FIRST ACTUATING POSITION ADAPTED TO COMMUNICATE THE SOURCE WITH THE DEVICE AND TOWARD A SECOND ACTUATING POSITION ADAPTED TO COMMUNICATE THE DEVICE WITH THE RESERVOIR, AND MEANS FOR MECHANICALLY MOVING SAID VALVE SPOOL IN SAID BORE, SAID VALVE SPOOL INCLUDING FLUID PRESSURE RESPONSIVE MEANS FOR MOVING SAID VALVE SPOOL TOWARD SAID FIRST ACTUATING POSITION UPON MECHNICAL MOVEMENT THEREOF TOWARD SAID FIRST ACTUATING 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) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |