Patent US3148903A successfully refreshed from Google Patents.
US3148903A
Expired / Lapsed
US
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Means for preventing dogging of panic exit bar in latched position
Assignee: VONNEGUT HARDWARE CO
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Filing: 1961-06-19
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Granted: 1964-09-15
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Expires: 1981-06-19
Abstract
No abstract record available.
Inventors
- 👤 John R Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:27
CPC Classifications
E; E05; E05B; E05B65/00; E05B65/10; E05B65/1046; E05B65/106; E05B65/1066; E05B13/00; E05B13/002; E05B65/1093; Y; Y10; Y10T; Y10T292/00; Y10T292/03; Y10T292/08; Y10T292/0801; Y10T292/0822; Y10T292/0908; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5159; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20636; Y10T74/20642
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
IN A PANIC EXIT DEVICE INCLUDING A CASE PROVIDING TRUNNION MEANS, A LEVER SUPPORTED FROM SAID TRUNNION MEANS FOR OSCILLATION BETWEEN LATCH-PROJECTED POSITION AND LATCH-RETRACTED POSITION, SAID LEVER HAVING AN ARM FORMED OF READILY MACHINABLE MATERIAL DISPOSED WITHIN SAID CASE, A DOGGING SCREW THREADEDLY MOUNTED IN SAID CASE AND HAVING ONE END ACCESSIBLE FOR MANIPULATION FROM OUTSIDE SAID CASE AND HAVING A NOSE DISPOSED WITHIN SAID CASE AND PRESENTED TOWARD SAID LEVER ARM, SAID LEVER ARM BEING FORMED WITH A RECESS WHICH, WHEN SAID LEVER IS IN LATCHRETRACTED POSITION, IS DISPOSED FOR RECEPTION OF SAID SCREW NOSE, AND AN ANVIL OF MATERIAL HARDER THAN THE MATERIAL OF SAID LEVER ARM, SAID ANVIL BEING MOUNTED TO MOVE WITH SAID LEVER ARM AND PRESENTING TOWARD SAID SCREW NOSE A SURFACE WHICH IS INCLINED AWAY FROM SAID SCREW NOSE AND TOWARD SAID RECESS, SAID LAST-NAMED SURFACE BEING ARRANGED IN REGISTRY WITH SAID SCREW NOSE AT ALL TIMES EXCEPT WHEN SAID LEVER IS IN LATCH-RETRACTED POSITION.
Claim 2
Dependent Claim
162 words
IN A PANIC EXIT DEVICE INCLUDING A CASE PROVIDING TRUNNION MEANS, A LEVER SUPPORTED FROM SAID TRUNNION MEANS FOR OSCILLATION BETWEEN LATCH-PROJECTED POSITION AND LATCH-RETRACTED POSITION, SAID LEVER HAVING AN ARM FORMED OF READILY MACHINABLE MATERIAL DISPOSED WITHIN SAID CASE, A DOGGING SCREW THREADEDLY MOUNTED IN SAID CASE AND HAVING ONE END ACCESSIBLE FOR MANIPULATION FROM OUTSIDE SAID CASE AND HAVING A NOSE DISPOSED WITHIN SAID CASE AND PRESENTED TOWARD SAID LEVER ARM, SAID LEVER ARM BEING FORMED WITH A RECESS WHICH, WHEN SAID LEVER IS IN LATCHRETRACTED POSITION, IS DISPOSED FOR RECEPTION OF SAID SCREW NOSE, AND AN ANVIL OF MATERIAL HARDER THAN THE MATERIAL OF SAID LEVER ARM, SAID ANVIL BEING MOUNTED TO MOVE WITH SAID LEVER ARM AND PRESENTING TOWARD SAID SCREW NOSE A SURFACE WHICH IS INCLINED AWAY FROM SAID SCREW NOSE AND TOWARD SAID RECESS, SAID LAST-NAMED SURFACE BEING ARRANGED IN REGISTRY WITH SAID SCREW NOSE AT ALL TIMES EXCEPT WHEN SAID LEVER IS IN LATCH-RETRACTED 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) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |