Patent US4106236A successfully refreshed from Google Patents.
US4106236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire door for trailers
Assignee: Individual
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Filing: 1977-03-30
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Granted: 1978-08-15
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Expires: 1997-03-30
Abstract
Abstract A push-out fire door for the side walls of trailers or the like providing egress from the trailer by quick release of a latch inside of the trailer holding the door to the trailer walls and a slight push on the door causing it to pivot outwardly of the trailer dislodging therefrom and falling away from the side of the trailer.
Inventors
- 👤 Howard G. Oliphant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:24
CPC Classifications
B; B60; B60J; B60J9/00; B60J9/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
251 words
A fire door comprising a casing forming a door opening, said casing comprising side members, header and a sill, said sill being provided with an opening therein, a fire door mounted within said door opening and having a frame extending around its periphery, engagement means extending from the side of said frame juxtapositioned to said sill and within said opening forming a loose fit therewith, said engagement means comprising a bolt means, the end of said bolt means fitting into said opening being tapered for aiding in its movement out of said opening when the door is pushed away from its casing from a latch side thereof, a rotatable latch means mounted on said door for detachably interlocking with said header in a given position and when rotated to another position releasing said fire door from said casing, said side members, header and sill each being provided with a flange extending over the edge of said fire door on the latch-mounted side thereof, a resilient finger mounted on the edge of said flanges for engaging the surface of said fire door on the latch-mounted side thereof, and resilient means mounted on the edge of said frame adjacent said sill forming a pivot for said fire door, whereby a push on said fire door near said latch means will cause said fire door to rotate about an edge of said sill means causing said engagement means to move out of said opening and said fire door to drop away from said casing.
Claim 2
Dependent Claim
251 words
A fire door comprising a casing forming a door opening, said casing comprising side members, header and a sill, said sill being provided with an opening therein, a fire door mounted within said door opening and having a frame extending around its periphery, engagement means extending from the side of said frame juxtapositioned to said sill and within said opening forming a loose fit therewith, said engagement means comprising a bolt means, the end of said bolt means fitting into said opening being tapered for aiding in its movement out of said opening when the door is pushed away from its casing from a latch side thereof, a rotatable latch means mounted on said door for detachably interlocking with said header in a given position and when rotated to another position releasing said fire door from said casing, said side members, header and sill each being provided with a flange extending over the edge of said fire door on the latch-mounted side thereof, a resilient finger mounted on the edge of said flanges for engaging the surface of said fire door on the latch-mounted side thereof, and resilient means mounted on the edge of said frame adjacent said sill forming a pivot for said fire door, whereby a push on said fire door near said latch means will cause said fire door to rotate about an edge of said sill means causing said engagement means to move out of said opening and said fire door to drop away from said casing.
Claim 3
Dependent Claim
15 words
The fire door set forth in claim 1 wherein: said resilient means comprising an O-ring.
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) | 1981-08-14 | 1982-02-13 | 1982-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-14 | 1986-02-13 | 1986-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-14 | 1990-02-13 | 1990-08-15 | $7700.00 | Window Closed / Lapsed |