US3124378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: —
•
Filing: —
•
Granted: 1964-03-10
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Expires: 1981-03-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:36
CPC Classifications
E; E05; E05B; E05B65/00; E05B65/10; E05B65/1006; E05C; E05C3/00; E05C3/12; E05C3/16; E05C3/22; E05C3/24; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/0803; Y10T292/0822; Y10T292/0908; Y10T292/1043; Y10T292/1075; Y10T292/1078
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
231 words
A LATCH DEVICE ADAPTED TO BE MOUNTED ADJACENT THE TOP EDGE OF A DOOR AND TO OPERATE IN CONJUNCTION WITH A STRIKE PROJECTING DOWNWARDLY FROM THE DOOR FRAME ABOVE SAID DEVICE, COMPRISING: LATCH HOUSING MEANS POSITIONED ADJACENT THE TOP EDGE OF A DOOR; A BOLT MOUNTED ON SAID MEANS FOR MOVEMENT BETWEEN A LATCHED POSITION AND A RELEASED POSITION; MEANS DEFINING STRIKE-ENGAGING MEANS ON SAID BOLT SO ARRANGED THAT WHEN SAID DOOR IS CLOSED ENGAGEMENT OF THE STRIKE WITH SAID BOLT WILL CAUSE THE LATTER TO MOVE FROM ITS RELEASED POSITION TO ITS LATCHED POSITION; LEVER MEANS FOR LOCKING SAID BOLT IN ITS LATCHED POSITION WHEN THE DOOR IS CLOSED AND FOR RELEASING SAID BOLT WHEN SAID DOOR IS TO BE OPENED; MEANS FOR ACTUATING SAID LEVER MEANS, SAID ACTUATING MEANS BEING MANUALLY OPERABLE TO ACTUATE SAID LEVER MEANS TO RELEASE SAID BOLT AND OPERABLE BY GRAVITY TO ACTUATE SAID LEVER MEANS TO LOCK SAID BOLT; AND MEANS ON SAID LEVER MEANS ADAPTED TO BE ENGAGED BY SAID BOLT WHEN THE LATTER IS IN ITS RELEASED POSITION TO LOCK SAID LEVER MEANS IN ITS BOLT RELEASING POSITION UNTIL THE DOOR IS AGAIN CLOSED AND THE STRIKE MOVES SAID BOLT TO ITS LATCHED POSITION TO RELEASE SAID LEVER MEANS, WHEREUPON THE INFLUENCE OF GRAVITY ON SAID ACTUATING MEANS WILL ACTUATE SAID LEVER MEANS TO ITS DOOR LOCKING POSITION TO LOCK SAID BOLT.
Claim 2
Dependent Claim
231 words
A LATCH DEVICE ADAPTED TO BE MOUNTED ADJACENT THE TOP EDGE OF A DOOR AND TO OPERATE IN CONJUNCTION WITH A STRIKE PROJECTING DOWNWARDLY FROM THE DOOR FRAME ABOVE SAID DEVICE, COMPRISING: LATCH HOUSING MEANS POSITIONED ADJACENT THE TOP EDGE OF A DOOR; A BOLT MOUNTED ON SAID MEANS FOR MOVEMENT BETWEEN A LATCHED POSITION AND A RELEASED POSITION; MEANS DEFINING STRIKE-ENGAGING MEANS ON SAID BOLT SO ARRANGED THAT WHEN SAID DOOR IS CLOSED ENGAGEMENT OF THE STRIKE WITH SAID BOLT WILL CAUSE THE LATTER TO MOVE FROM ITS RELEASED POSITION TO ITS LATCHED POSITION; LEVER MEANS FOR LOCKING SAID BOLT IN ITS LATCHED POSITION WHEN THE DOOR IS CLOSED AND FOR RELEASING SAID BOLT WHEN SAID DOOR IS TO BE OPENED; MEANS FOR ACTUATING SAID LEVER MEANS, SAID ACTUATING MEANS BEING MANUALLY OPERABLE TO ACTUATE SAID LEVER MEANS TO RELEASE SAID BOLT AND OPERABLE BY GRAVITY TO ACTUATE SAID LEVER MEANS TO LOCK SAID BOLT; AND MEANS ON SAID LEVER MEANS ADAPTED TO BE ENGAGED BY SAID BOLT WHEN THE LATTER IS IN ITS RELEASED POSITION TO LOCK SAID LEVER MEANS IN ITS BOLT RELEASING POSITION UNTIL THE DOOR IS AGAIN CLOSED AND THE STRIKE MOVES SAID BOLT TO ITS LATCHED POSITION TO RELEASE SAID LEVER MEANS, WHEREUPON THE INFLUENCE OF GRAVITY ON SAID ACTUATING MEANS WILL ACTUATE SAID LEVER MEANS TO ITS DOOR LOCKING POSITION TO LOCK SAID BOLT.
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) | 1967-03-10 | 1967-09-09 | 1968-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-10 | 1971-09-09 | 1972-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-10 | 1975-09-09 | 1976-03-10 | $7700.00 | Window Closed / Lapsed |