Patent US3218882A successfully refreshed from Google Patents.
US3218882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide valve detent and locking device
Assignee: —
•
Filing: —
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Granted: 1965-11-23
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Expires: 1982-11-23
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:58
CPC Classifications
G; G05; G05G; G05G5/00; G05G5/06; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18176; Y10T74/18182; Y10T74/20; Y10T74/20576; Y10T74/20636
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A SLIDE VALVE DETENT DEVICE, COMPRISING IN COMBINATION: (A) A VALVE BODY HAVING A FIRST BORE THEREIN, (B) A CAP CONNECTED TO SAID VALVE BODY IN AXIAL ALIGNMENT THEREWITH HAVING A SECOND BORE THEREIN PROVIDED WITH ANNULAR GROOVES, (C) A SPOOL OPERABLE IN SAID BORES COMPRISING AN INNER SPOOL AND AN OUTER SPOOL, THE FORCE FOR OPERATING SAID SPOOL BEING APPLIED TO SAID INNER SPOOL, (D) AN ANNULAR CHANNEL IN THE FORWARD END OF SAID OUTER SPOOL, (E) A COMPLEMENT OF BALLS IN SAID ANNULAR CHANNEL OPERABLY ASSOCIATED WITH SAID ANNULAR GROOVES, (F) AN ANNULAR DETENT SPRING INTERPOSED BETWEEN SAID COMPLEMENT OF BALLS AND THE INNER PERIPHERY OF SAID ANNULAR CHANNEL URGING SAID BALLS OUTWARDLY, (G) STOP MEANS LIMITING THE FORWARD MOVEMENT OF SAID OUTER SPOOL, (H) RELEASABLE LOCK MEANS ASSOCIATED WITH SAID INNER SPOOL AND SAID OUTER SPOOL, CAUSING SAID INNER SPOOL
Claim 2
Dependent Claim
143 words
A SLIDE VALVE DETENT DEVICE, COMPRISING IN COMBINATION: (A) A VALVE BODY HAVING A FIRST BORE THEREIN, (B) A CAP CONNECTED TO SAID VALVE BODY IN AXIAL ALIGNMENT THEREWITH HAVING A SECOND BORE THEREIN PROVIDED WITH ANNULAR GROOVES, (C) A SPOOL OPERABLE IN SAID BORES COMPRISING AN INNER SPOOL AND AN OUTER SPOOL, THE FORCE FOR OPERATING SAID SPOOL BEING APPLIED TO SAID INNER SPOOL, (D) AN ANNULAR CHANNEL IN THE FORWARD END OF SAID OUTER SPOOL, (E) A COMPLEMENT OF BALLS IN SAID ANNULAR CHANNEL OPERABLY ASSOCIATED WITH SAID ANNULAR GROOVES, (F) AN ANNULAR DETENT SPRING INTERPOSED BETWEEN SAID COMPLEMENT OF BALLS AND THE INNER PERIPHERY OF SAID ANNULAR CHANNEL URGING SAID BALLS OUTWARDLY, (G) STOP MEANS LIMITING THE FORWARD MOVEMENT OF SAID OUTER SPOOL, (H) RELEASABLE LOCK MEANS ASSOCIATED WITH SAID INNER SPOOL AND SAID OUTER SPOOL, CAUSING SAID INNER SPOOL
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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |