US3113352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure door locking device
Assignee: Chicago Bridge and Iron Co
•
Filing: 1958-12-18
•
Granted: 1963-12-10
•
Expires: 1978-12-18
Abstract
No abstract record available.
Inventors
- 👤 John D Gibbs
- 👤 Ford E Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:33
CPC Classifications
E; E05; E05B; E05B51/00; E05B51/02; F; F16; F16J; F16J13/00; F16J13/02; F16J13/06; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/1043; Y10T292/1075; Y10T292/1082
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A PRESSURE DOOR LOCKING AND SEALING MECHANISM FOR SECURING THE DOOR IN CLOSED AND SEALED POSITION WITH RESPECT TO WALLS AND FRAME SURROUNDING THE DOOR OPENING COMPRISING A GASKET FIXED TO THE DOOR FRAME ALONG AT LEAST ONE SIDE AND AGAINST WHICH THE DOOR IS ADAPTED TO ABUT, A TOGGLE MECHANISM HAVING A PLURALITY OF LINKS CARRIED BY ONE OF SAID WALLS ADJACENT TO THE DOOR OPENING, A PIVOTED LOCKING DISC CONNECTED TO SAID TOGGLE MECHANISM AND ADAPTED TO BE ROTATED THEREBY THROUGH A LIMITED ANGLE, SAID DISC HAVING A NOTCHED RECESS WITH ONE EDGE PROVIDING A LOCKING SHOULDER POSITIONED TO ENGAGE THE EXTERIOR SIDE OF SAID DOOR AND FORCE THE LATTER TO CLOSED AND SEALED POSITION AGAINST THE GASKET TO SEAL THE DOOR, AND THE SECOND EDGE PROVIDING AN OPENING SHOULDER POSITIONED TO ENGAGE THE
Claim 2
Dependent Claim
136 words
A PRESSURE DOOR LOCKING AND SEALING MECHANISM FOR SECURING THE DOOR IN CLOSED AND SEALED POSITION WITH RESPECT TO WALLS AND FRAME SURROUNDING THE DOOR OPENING COMPRISING A GASKET FIXED TO THE DOOR FRAME ALONG AT LEAST ONE SIDE AND AGAINST WHICH THE DOOR IS ADAPTED TO ABUT, A TOGGLE MECHANISM HAVING A PLURALITY OF LINKS CARRIED BY ONE OF SAID WALLS ADJACENT TO THE DOOR OPENING, A PIVOTED LOCKING DISC CONNECTED TO SAID TOGGLE MECHANISM AND ADAPTED TO BE ROTATED THEREBY THROUGH A LIMITED ANGLE, SAID DISC HAVING A NOTCHED RECESS WITH ONE EDGE PROVIDING A LOCKING SHOULDER POSITIONED TO ENGAGE THE EXTERIOR SIDE OF SAID DOOR AND FORCE THE LATTER TO CLOSED AND SEALED POSITION AGAINST THE GASKET TO SEAL THE DOOR, AND THE SECOND EDGE PROVIDING AN OPENING SHOULDER POSITIONED TO ENGAGE THE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-09 | 1967-06-10 | 1967-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-09 | 1971-06-10 | 1971-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-09 | 1975-06-10 | 1975-12-10 | $7700.00 | Window Closed / Lapsed |