US3346277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking device
Assignee: MAC Valves Inc
•
Filing: 1964-07-15
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Granted: 1967-10-10
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Expires: 1984-07-15
Abstract
No abstract record available.
Inventors
- 👤 Walter D Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:53
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/08; F16L37/12; Y; Y10; Y10T; Y10T403/00; Y10T403/59; Y10T403/70; Y10T403/7009; Y10T403/7011; Y10T403/7013; Y10T403/7041; Y10T403/7047; Y10T403/7049
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A LOCKING DEVICE FOR A PAIR OF CONCENTRIC CYLINDRICAL MEMBERS INCLUDING A FIRST OUTER CYLINDRICAL MEMBER AND A SECOND INNER CYLINDRICAL MEMBER, THE COMBINATION COMPIRISING: A CRESCENT RING SLIDABLY MOUNTED IN A SLOT ON THE INNER SURFACE OF SAID FIRST CYLINDRICAL MEMBER; MEANS FOR APPLYING A RADIAL FORCE TO SAID CRESCENT RING; AND, SAID MEANS FOR APPLYING A RADIAL FORCE TO SAID CRESCENT RING INCLUDING MEANS FOR APPLYING A BIDIRECTIONAL RADIAL FORCE TO SAID CRESENT RING, SAID MEANS FOR APPLYING A BIDIRECTIONAL FORCE INCLUDES A THREADED CYLINDRICAL MEMBER SECURED IN SAID FIRST CYLINDRICAL MEMBER AGAINST LONGITUDINAL TRANSLATION AND WHEREIN SAID CRESCENT RING INCLUDES A TONGUE HAVING A THREADED SURFACE IN FRICTIONAL ENGAGEMENT WITH SAID THREADED MEMBER.
Claim 2
Dependent Claim
116 words
A LOCKING DEVICE FOR A PAIR OF CONCENTRIC CYLINDRICAL MEMBERS INCLUDING A FIRST OUTER CYLINDRICAL MEMBER AND A SECOND INNER CYLINDRICAL MEMBER, THE COMBINATION COMPIRISING: A CRESCENT RING SLIDABLY MOUNTED IN A SLOT ON THE INNER SURFACE OF SAID FIRST CYLINDRICAL MEMBER; MEANS FOR APPLYING A RADIAL FORCE TO SAID CRESCENT RING; AND, SAID MEANS FOR APPLYING A RADIAL FORCE TO SAID CRESCENT RING INCLUDING MEANS FOR APPLYING A BIDIRECTIONAL RADIAL FORCE TO SAID CRESENT RING, SAID MEANS FOR APPLYING A BIDIRECTIONAL FORCE INCLUDES A THREADED CYLINDRICAL MEMBER SECURED IN SAID FIRST CYLINDRICAL MEMBER AGAINST LONGITUDINAL TRANSLATION AND WHEREIN SAID CRESCENT RING INCLUDES A TONGUE HAVING A THREADED SURFACE IN FRICTIONAL ENGAGEMENT WITH SAID THREADED MEMBER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-09 | 1971-04-10 | 1971-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-09 | 1975-04-10 | 1975-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-09 | 1979-04-10 | 1979-10-10 | $7700.00 | Window Closed / Lapsed |