Patent US3346992A successfully refreshed from Google Patents.
US3346992A
Expired / Lapsed
US
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Mechanism for swinging and lifting doors and the like
Assignee: American Sterilizer Co
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Filing: 1965-08-26
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Granted: 1967-10-17
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Expires: 1985-08-26
Abstract
No abstract record available.
Inventors
- 👤 Lodge Alvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:41
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/611; E05F15/614; E05Y; E05Y2201/00; E05Y2201/20; E05Y2201/23; E05Y2201/232; E05Y2201/236; E05Y2400/00; E05Y2400/10; E05Y2400/30; E05Y2400/3013; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18296; Y10T74/18304; Y10T74/18312; Y10T74/18328; Y10T74/18568; Y10T74/18576
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
88 words
IN COMBINATION, A DOOR AND OPENING MEANS ON SAID DOOR, SAID DOOR BEING ADAPTED TO BE SUPPORTED IN A PIT, SAID PIT BEING DEFINED BY A SIDE TERMINATING IN A TOP EDGE DISPOSED AT A HIGHER LEVEL THAN THE EDGE OF SAID DOOR, SAID OPENING MEANS HAVING MEANS THEREON TO SWING SAID DOOR INTO ENGAGEMENT WITH SAID SIDE OF SAID PIT, SAID OPENING MEANS HAVING FURTHER MEANS TO LIFT SAID DOOR ABOVE SAID TOP EDGE OF SAID PIT AND TO THEN SWING SAID DOOR TO FULL OPEN 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) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |