Patent US3378290A successfully refreshed from Google Patents.
US3378290A
Expired / Lapsed
US
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Door locking and latching device
Assignee: MARK M SEKULICH
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Filing: 1965-02-01
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Granted: 1968-04-16
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Expires: 1985-02-01
Abstract
No abstract record available.
Inventors
- 👤 Mark M Sekulich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:48
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/70; E06B3/88; E05; E05C; E05C9/00; E05C9/04; E06B3/32; E06B3/34; E06B3/36; E06B3/362; E06B3/365; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/0834; Y10T292/0836; Y10T292/0844
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A LOCKING AND LATCHING DEVICE FOR USE WITH A PAIR OF FIRST AND SECOND SWINGING DOORS, THE FREE END OF SAID SECOND DOOR BEING PROVIDED WITH A LOCK HAVING A RETRACTABLE KEEPER, COMPRISING: A RECESSED VERTICAL TRACK EXTENDING ALONG THE FREE EDGE OF THE FIRST OF SAID DOORS; AN UPPER BOLT VERTICALLY SLIDABLY DISPOSED WITHIN THE RECESS OF SAID TRACK; A LOWER BOLT VERTICALLY SLIDABLY DISPOSED WITHIN THE RECESS OF SAID TRACK BELOW THE LOWER END OF SAID UPPER BOLT, THE OUTER EDGES OF SAID BOLTS BEING FLUSH WITH SAID FREE END OF SAID FIRST DOOR; RESILIENT MEANS INTERPOSED BETWEEN SAID BOLTS AND SAID TRACK YIELDINGLY RESTRAINING SAID BOLTS AGAINST VERTICAL MOVEMENT IN SAID TRACK IN EITHER DIRECTION;
Claim 2
Dependent Claim
118 words
A LOCKING AND LATCHING DEVICE FOR USE WITH A PAIR OF FIRST AND SECOND SWINGING DOORS, THE FREE END OF SAID SECOND DOOR BEING PROVIDED WITH A LOCK HAVING A RETRACTABLE KEEPER, COMPRISING: A RECESSED VERTICAL TRACK EXTENDING ALONG THE FREE EDGE OF THE FIRST OF SAID DOORS; AN UPPER BOLT VERTICALLY SLIDABLY DISPOSED WITHIN THE RECESS OF SAID TRACK; A LOWER BOLT VERTICALLY SLIDABLY DISPOSED WITHIN THE RECESS OF SAID TRACK BELOW THE LOWER END OF SAID UPPER BOLT, THE OUTER EDGES OF SAID BOLTS BEING FLUSH WITH SAID FREE END OF SAID FIRST DOOR; RESILIENT MEANS INTERPOSED BETWEEN SAID BOLTS AND SAID TRACK YIELDINGLY RESTRAINING SAID BOLTS AGAINST VERTICAL MOVEMENT IN SAID TRACK IN EITHER DIRECTION;
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-16 | 1971-10-16 | 1972-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-16 | 1975-10-16 | 1976-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-16 | 1979-10-16 | 1980-04-16 | $7700.00 | Window Closed / Lapsed |