US3782798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure construction
Assignee: GERLACH INDUSTRIES Inc A CORP OF
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Filing: 1972-08-01
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Granted: 1974-01-01
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Expires: 1992-08-01
Abstract
Abstract A slidable planar door for a refrigerated housing and the like having a rectangular opening in an upper wall thereof. The planar door includes a lower member and an upper member with insulation carried therebetween. The upper member is attached to the lower member adjacent the rear thereof by a U-shaped member so that the upper member can expand to a different degree from the lower member without the door buckling. A thin plastic sheet is carried between the upper member and insulation carried in the door so as to permit the upper member to substantially float when expanding relative to the lower member.
Inventors
- 👤 R Whorton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:09
CPC Classifications
F; F25; F25D; F25D23/00; F25D23/02; Y; Y10; Y10S; Y10S220/00; Y10S220/902
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
166 words
A door for a refrigerated housing and the like comprising: a lower member having a bottom wall and vertical front, side and rear walls extending upwardly therefrom, said rear wall having a vertical extension extending vertically above said side walls, a planar upper member extending over and spanning said lower member, a vertically extending flange integral with a rear portion of said upper member abutting against said vertical extension of said lower member, a U-shaped member extending over said vertically extending flange and said vertical extension, interlocking members carried by said U-shaped member and said rear wall of said lower member for aiding in holding a rear portion of said upper and lower members together, outwardly extending flanges integral with the top of said vertical side walls, said planar upper member having downwardly and inwardly turned edges which extend around said outwardly extending flanges in a loosely fitting relation so as to permit expansion between said upper member and said lower member without said door buckling.
Claim 2
Dependent Claim
166 words
A door for a refrigerated housing and the like comprising: a lower member having a bottom wall and vertical front, side and rear walls extending upwardly therefrom, said rear wall having a vertical extension extending vertically above said side walls, a planar upper member extending over and spanning said lower member, a vertically extending flange integral with a rear portion of said upper member abutting against said vertical extension of said lower member, a U-shaped member extending over said vertically extending flange and said vertical extension, interlocking members carried by said U-shaped member and said rear wall of said lower member for aiding in holding a rear portion of said upper and lower members together, outwardly extending flanges integral with the top of said vertical side walls, said planar upper member having downwardly and inwardly turned edges which extend around said outwardly extending flanges in a loosely fitting relation so as to permit expansion between said upper member and said lower member without said door buckling.
Claim 3
Dependent Claim
45 words
The door as set forth in claim 1, wherein said interlocking members comprise: an elongated horizontal groove carried in said rear wall of said lower member, and an inwardly extending protrusion carried adjacent a bottom leg of said U-shaped member extending in said horizontal groove.
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) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |