US3628289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sliding door construction
Assignee: GERLACH INDUSTRIES Inc A CORP OF
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Filing: 1970-05-25
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Granted: 1971-12-21
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Expires: 1990-05-25
Abstract
Abstract A refrigerator door unit received in an opening in a refrigerator wall and adapted for horizontal movement therein to provide access to a refrigerator compartment. The door system comprises a unit frame and two parallel doors mounted for horizontal movement therein. The system is unique, in that, a complete thermal barrier is provided across the access opening. Such a barrier is accomplished by thermally insulated doors equipped with means to seal the space between the doors and by the unit frame which exposes no conductive path between the refrigerated interior of the compartment and the ambient outside air.
Inventors
- 👤 Herman L Buffington
- 👤 Robert M Stribling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:33
CPC Classifications
E; E05; E05D; E05D15/00; E05D15/06; E05D15/0621; E05D15/0626; E05D15/0652; A; A47; A47F; A47F3/00; A47F3/04; A47F3/0404; A47F3/0426; A47F3/043; E06; E06B; E06B3/00; E06B3/32; E06B3/34; E06B3/42; E06B3/46; E06B3/4609; F; F25; F25D; F25D23/00; F25D23/02; F25D23/021; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132; E05Y2900/30; E05Y2900/31
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
190 words
A refrigerator door unit received in an opening in a doublepanel refrigerator wall and adapted for movement for providing access to a refrigerator compartment comprising: a unit frame positioned in said wall and removably secured thereto, said unit frame including a low thermal conductive member, said member including an elongated base portion, an L-shaped protrusion carried adjacent one end of said base portion defining a slot, one panel of said refrigerator wall having a planar portion extending into said slot and abutting against said L-shaped protrusion, a U-shaped protrusion having a leg terminating short of said base portion and facing said other end of said base portion, another panel of said refrigerator wall having a flange portion adjacent an edge extending between said leg of said Ushaped protrusion and said base portion, said member having spaced protrusions on the opposite side of said base portion from said L-shaped and U-shaped protrusions defining slots, a pair of thermally insulated doors mounted in said slots for horizontal movement, and said doors being provided with a protuberance carried between said doors having low thermal conductance properties providing a thermal barrier between said doors.
Claim 2
Dependent Claim
190 words
A refrigerator door unit received in an opening in a doublepanel refrigerator wall and adapted for movement for providing access to a refrigerator compartment comprising: a unit frame positioned in said wall and removably secured thereto, said unit frame including a low thermal conductive member, said member including an elongated base portion, an L-shaped protrusion carried adjacent one end of said base portion defining a slot, one panel of said refrigerator wall having a planar portion extending into said slot and abutting against said L-shaped protrusion, a U-shaped protrusion having a leg terminating short of said base portion and facing said other end of said base portion, another panel of said refrigerator wall having a flange portion adjacent an edge extending between said leg of said Ushaped protrusion and said base portion, said member having spaced protrusions on the opposite side of said base portion from said L-shaped and U-shaped protrusions defining slots, a pair of thermally insulated doors mounted in said slots for horizontal movement, and said doors being provided with a protuberance carried between said doors having low thermal conductance properties providing a thermal barrier between said doors.
Claim 3
Dependent Claim
60 words
The refrigerator door unit set forth in claim 1 further comprising: a pair of sealing gaskets carried in said slots between said base portion and an edge of said insulated doors, and each of said sealing gaskets having two spaced deformable door contact members defining a space therebetween for defining a thermal seal between said base portions and said doors.
Claim 4
Dependent Claim
60 words
The refrigerator door unit as defined in claim 1, wherein the unit frame comprises two vertical sections, a lower horizontal section and an upper section area where said doors are suspended on rollers, said vertical and horizontal sections including said low thermal conductive member, and said upper area has depending therefrom and in engagement with each door, a thermal seal.
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) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |