US3410306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control valve with lockout element
Assignee: SPX Technologies Inc
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Filing: 1966-10-27
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Granted: 1968-11-12
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Expires: 1986-10-27
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Malott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:08
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/01; B; B62; B62D; B62D5/00; B62D5/06; B62D5/08; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7847; Y10T137/8593; Y10T137/87169; Y10T137/87233; Y10T137/87241
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
206 words
A CONTROL VALVE COMPRISING (A) INLET AND EXHAUST PASSAGES, FIRST AND SECOND DELIVERY PASSAGES, AND FIRST AND SECOND MOTOR PASSAGES; (B) A METERING VALVE HAVING A NEUTRAL POSITION IN WHICH IT CONNECTS EACH DELIVERY PASSAGE WITH BOTH THE INLET PASSAGE AND THE EXHAUST PASSAGE AND BEING SHIFTABLE IN OPPOSITE DIRECTIONS FROM THAT POSITION TO RESTRICT COMMUNICATION BETWEEN ONE OR THE OTHER OF THE DELIVERY PASSAGES AND THE INLET PASSAGE WHILE RESTRICTING COMMUNICATION BETWEEN THE REMAINING DELIVERY PASSAGE AND THE EXHAUST PASSAGE; (C) A TWO-POSITION LOCK VALVE HAVING A CLOSED POSITION IN WHICH IT ISOLATES EACH MOTOR PASSAGE FROM THE OTHER PASSAGES, AND AN OPEN POSITON IN WHICH IT CONNECTS THE FIRST AND SECOND MOTOR PASSAGES WITH THE FIRST AND SECOND DELIVERY PASSAGES, RESPECTIVELY; (D) ACTUATING MEANS RESPONSIVE TO MOVEMENT OF THE METERING VALVE FOR SHIFTING THE LOCK VALVE TO ITS CLOSED POSITION WHEN THE METERING VALVE IS MOVED TO ITS NEUTRAL POSITION, AND FOR SHIFTING THE LOCK VALVE TO ITS OPEN POSITION WHEN THE METERING VALVE IS MOVED IN EITHER OF SAID OPPOSITE DIRECTIONS; AND (E) MEANS FOR DAMPING MOVEMENT OF THE LOCK VALVE FROM ITS OPEN POSITION TO ITS CLOSED POSITION SO THAT THIS MOVEMENT LAGS MOVEMENT OF THE METERING VALVE TO ITS NEUTRAL POSITION.
Claim 2
Dependent Claim
206 words
A CONTROL VALVE COMPRISING (A) INLET AND EXHAUST PASSAGES, FIRST AND SECOND DELIVERY PASSAGES, AND FIRST AND SECOND MOTOR PASSAGES; (B) A METERING VALVE HAVING A NEUTRAL POSITION IN WHICH IT CONNECTS EACH DELIVERY PASSAGE WITH BOTH THE INLET PASSAGE AND THE EXHAUST PASSAGE AND BEING SHIFTABLE IN OPPOSITE DIRECTIONS FROM THAT POSITION TO RESTRICT COMMUNICATION BETWEEN ONE OR THE OTHER OF THE DELIVERY PASSAGES AND THE INLET PASSAGE WHILE RESTRICTING COMMUNICATION BETWEEN THE REMAINING DELIVERY PASSAGE AND THE EXHAUST PASSAGE; (C) A TWO-POSITION LOCK VALVE HAVING A CLOSED POSITION IN WHICH IT ISOLATES EACH MOTOR PASSAGE FROM THE OTHER PASSAGES, AND AN OPEN POSITON IN WHICH IT CONNECTS THE FIRST AND SECOND MOTOR PASSAGES WITH THE FIRST AND SECOND DELIVERY PASSAGES, RESPECTIVELY; (D) ACTUATING MEANS RESPONSIVE TO MOVEMENT OF THE METERING VALVE FOR SHIFTING THE LOCK VALVE TO ITS CLOSED POSITION WHEN THE METERING VALVE IS MOVED TO ITS NEUTRAL POSITION, AND FOR SHIFTING THE LOCK VALVE TO ITS OPEN POSITION WHEN THE METERING VALVE IS MOVED IN EITHER OF SAID OPPOSITE DIRECTIONS; AND (E) MEANS FOR DAMPING MOVEMENT OF THE LOCK VALVE FROM ITS OPEN POSITION TO ITS CLOSED POSITION SO THAT THIS MOVEMENT LAGS MOVEMENT OF THE METERING VALVE TO ITS 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) | 1971-11-12 | 1972-05-13 | 1972-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-12 | 1976-05-13 | 1976-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-12 | 1980-05-13 | 1980-11-12 | $7700.00 | Window Closed / Lapsed |