US3091490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detent mechanism for securing a knob to a door latch
Assignee: Dexter Industries Inc
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Filing: 1960-08-08
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Granted: 1963-05-28
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Expires: 1980-08-08
Abstract
No abstract record available.
Inventors
- 👤 Murray E Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:08
CPC Classifications
E; E05; E05B; E05B3/00; E05B3/003; Y; Y10; Y10T; Y10T292/00; Y10T292/85; Y10T292/865; Y10T403/00; Y10T403/60; Y10T403/606
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
151 words
IN A LATCH MECHANISM HAVING A KNOB AND A SLEEVE NORMALLY RECEIVING SAID KNOB FOR TRANSFERRING TORQUE FROM SAID KNOB TO SAID LATCH MECHANISM, A SYSTEM FOR DETACHABLY SECURING SAID KNOB TO SAID SLEEVE COMPRISING: A SHANK MEMBER NORMALLY FIXED WITH RESPECT TO SAID KNOB AND ENGAGEABLE AXIALLY WITH SAID SLEEVE, SAID SHANK MEMBER HAVING A DISCONTINUITY IN THE WALL THEREOF AND A NOTCH AXIALLY ALIGNED WITH SAID DISCONTINUITY PROVIDING CAM SURFACES DIVERGING TO INCREASED WIDTH TO THE END OF SAID SHANK; DETENT MEANS SLIDABLY MOUNTED IN SAID SLEEVE FOR MOVEMENT TRANSVERSELY TO THE AXIS OF SAID SLEEVE AND HAVING A PROJECTING PORTION OF SUBSTANTIALLY UNIFORM THICKNESS TAPERING OUTWARDLY WITH RESPECT TO SAID SLEEVE TO REDUCED WIDTH IN A PLANE NORMAL TO THE AXIS OF SAID SLEEVE TO DEFINE EDGES ENGAGEABLE WITH SAID CAM SURFACES AND RECEIVABLE IN SAID DISCONTINUITY; AND BIASING MEANS URGING SAID DETENT TOWARD ENGAGEMENT WITH SAID DISCONTINUITY.
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) | 1966-05-27 | 1966-11-26 | 1967-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-27 | 1970-11-26 | 1971-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-27 | 1974-11-26 | 1975-05-28 | $7700.00 | Window Closed / Lapsed |