Patent US3091819A successfully refreshed from Google Patents.
US3091819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door control mechanism
Assignee: Brasco Manufacturing Co
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Filing: 1960-09-20
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Granted: 1963-06-04
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Expires: 1980-09-20
Abstract
No abstract record available.
Inventors
- 👤 James D Wheeler
- 👤 Jr Pelham H Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:20
CPC Classifications
E; E05; E05F; E05F3/00; E05F3/04; E05F3/10; E05F3/104; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
THE COMBINATION OF A DOOR FRAME HAVING A SIDE MEMBER AND A HEADER SECURED THERETO, A SPRING BIASED DOOR MOUNTED IN THE SAID FRAME, A HINGE PIN MOUNTED IN THE HEADER AND EXTENDING INTO THE DOOR FOR ROTATIVE MOVEMENT THEREWITH, AN ELASTIC BLOCK MOUNTED IN THE SAID HEADER HAVING AN ANGULAR EXTENDING EDGE PORTION, A BRAKING SHOE MOUNTED UPON THE SAID BLOCK ALONG THE ANGULAR EDGE PORTION HAVING AN ARCUATE-SHAPED BRAKING SURFACE THEREON, AN ARM ON THE HINGE PIN IN ENGAGEMENT WITH THE SHOE ON THE SAID BLOCK AND EXPANSION MEANS IN THE SAID BLOCK WHEREBY THE FRICTIONAL RELATIONSHIP OF THE SHOE AND THE ARM IS CONTROLLED.
Claim 2
Dependent Claim
107 words
THE COMBINATION OF A DOOR FRAME HAVING A SIDE MEMBER AND A HEADER SECURED THERETO, A SPRING BIASED DOOR MOUNTED IN THE SAID FRAME, A HINGE PIN MOUNTED IN THE HEADER AND EXTENDING INTO THE DOOR FOR ROTATIVE MOVEMENT THEREWITH, AN ELASTIC BLOCK MOUNTED IN THE SAID HEADER HAVING AN ANGULAR EXTENDING EDGE PORTION, A BRAKING SHOE MOUNTED UPON THE SAID BLOCK ALONG THE ANGULAR EDGE PORTION HAVING AN ARCUATE-SHAPED BRAKING SURFACE THEREON, AN ARM ON THE HINGE PIN IN ENGAGEMENT WITH THE SHOE ON THE SAID BLOCK AND EXPANSION MEANS IN THE SAID BLOCK WHEREBY THE FRICTIONAL RELATIONSHIP OF THE SHOE AND THE ARM IS CONTROLLED.
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) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |