US3173572A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door closure
Assignee: American Sterilizer Co
•
Filing: 1962-05-28
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Granted: 1965-03-16
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Expires: 1982-05-28
Abstract
No abstract record available.
Inventors
- 👤 Donald J Beecher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:52
CPC Classifications
F; F16; F16J; F16J13/00; F16J13/02; F16J13/08; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/0803; Y10T292/0805; Y10T292/0806
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
A DOOR ASSEMBLY COMPRISING A DOOR, A HUB MEMBER SUPPORTED ON ONE SIDE OF SAID DOOR, AT LEAST THREE SPACED ARMS, ONE END OF EACH SAID ARM BEING ENGAGED BY SAID HUB MEMBER, EACH SAID ARM EXTENDING RADIALLY FROM SAID HUB MEMBER, A FULCRUM MEMBER DISPOSED BETWEEN EACH SAID ARM AND SAID DOOR, MEANS ON EACH SAID ARM TO ENGAGE A MEMBER ON A DEVICE TO BE CLOSED, SAID HUB MEMBER HAVING MEANS TO FORCE THE ENDS OF SAID ARMS ENGAGED THEREBY TO MOVE SAID ENDS RELATIVE TO SAID DOOR, AND MEANS ENGAGING EACH SAID FULCRUM MEMBER HOLDING EACH SAID FULCRUM MEMBER IN FIXED RELATION TO SAID DOOR FOR SUPPORTING SAID ARM IN SPACED RELATION TO SAID DOOR, SAID MEANS ENGAGING EACH SAID FULCRUM MEMBER BEING MADE OF DUCTILE MATERIAL WHEREBY SAID MEANS UNDER ANY ONE OF SAID ARMS HAVING A GREATER FORCE IMPOSED THEREON THAN THE OTHERS IS PERMANENTLY DISTORTED BY SAID FULCRUM MEMBER ENGAGING IT WHEREBY THE FORCES ON SAID ARMS ARE EQUALIZED WHEN SAID MEANS TO FORCE THE ENDS OF SAID ARMS IS SUBSEQUENTLY ACTUATED.
Claim 2
Dependent Claim
178 words
A DOOR ASSEMBLY COMPRISING A DOOR, A HUB MEMBER SUPPORTED ON ONE SIDE OF SAID DOOR, AT LEAST THREE SPACED ARMS, ONE END OF EACH SAID ARM BEING ENGAGED BY SAID HUB MEMBER, EACH SAID ARM EXTENDING RADIALLY FROM SAID HUB MEMBER, A FULCRUM MEMBER DISPOSED BETWEEN EACH SAID ARM AND SAID DOOR, MEANS ON EACH SAID ARM TO ENGAGE A MEMBER ON A DEVICE TO BE CLOSED, SAID HUB MEMBER HAVING MEANS TO FORCE THE ENDS OF SAID ARMS ENGAGED THEREBY TO MOVE SAID ENDS RELATIVE TO SAID DOOR, AND MEANS ENGAGING EACH SAID FULCRUM MEMBER HOLDING EACH SAID FULCRUM MEMBER IN FIXED RELATION TO SAID DOOR FOR SUPPORTING SAID ARM IN SPACED RELATION TO SAID DOOR, SAID MEANS ENGAGING EACH SAID FULCRUM MEMBER BEING MADE OF DUCTILE MATERIAL WHEREBY SAID MEANS UNDER ANY ONE OF SAID ARMS HAVING A GREATER FORCE IMPOSED THEREON THAN THE OTHERS IS PERMANENTLY DISTORTED BY SAID FULCRUM MEMBER ENGAGING IT WHEREBY THE FORCES ON SAID ARMS ARE EQUALIZED WHEN SAID MEANS TO FORCE THE ENDS OF SAID ARMS IS SUBSEQUENTLY ACTUATED.
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) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |