Patent US4109484A successfully refreshed from Google Patents.
US4109484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal protective barrier for open refrigerated compartment
Assignee: Sullivan Co
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Filing: 1977-03-03
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Granted: 1978-08-29
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Expires: 1997-03-03
Abstract
Abstract Means forming a thermal protective barrier for inhibiting the transfer of energy between the environs and an open refrigerated compartment or bin during limited periods of inactivity has been provided by a pliant panel sufficiently extensive to cover the opening of the compartment. The panel is readily fastenable to an edge margin of the freezer compartment so that it can be draped across the open compartment. The panel comprises sections readily releasably secured together in sections to be easily removed for selective access to limited portions of the freezer compartment and for easy handling and storage of the sections. The closure panel is constructed whereby condensation accumulates on the exterior surface while a thermal barrier layer lies protected from condensate on the internal surface.
Inventors
- 👤 William E. Cunningham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:04
CPC Classifications
A; A47; A47F; A47F3/00; A47F3/04; A47F3/0439; A47F3/0469
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
108 words
A thermal barrier for inhibiting the transfer of energy between the environs and an open refrigerated compartment during limited periods of inactivity comprising pliant panel means sufficiently extensive to cover the opening of said compartment, readily releasable fastening means disposed along an edge margin of said compartment, fastening means carried by an edge margin of said panel means for cooperation and engagement with the first named fastening means to retain said panel means disposed to extend across and close said compartment, said panel means comprising a layer of substantially impervious pliant material and a layer of thermal insulating material carried on the inner face of said impervious material.
Claim 2
Dependent Claim
108 words
A thermal barrier for inhibiting the transfer of energy between the environs and an open refrigerated compartment during limited periods of inactivity comprising pliant panel means sufficiently extensive to cover the opening of said compartment, readily releasable fastening means disposed along an edge margin of said compartment, fastening means carried by an edge margin of said panel means for cooperation and engagement with the first named fastening means to retain said panel means disposed to extend across and close said compartment, said panel means comprising a layer of substantially impervious pliant material and a layer of thermal insulating material carried on the inner face of said impervious material.
Claim 3
Dependent Claim
74 words
A thermal barrier according to claim 1 in which said panel means comprises a plurality of segments no one of which is greater than can be easily handled and folded by an individual for compact storage, and means carried by said segments for coupling said segments together to form a sufficiently enlarged panel to close said opening while permitting said segments to be removed individually for limited access to selected portions of said compartment.
Claim 4
Dependent Claim
106 words
A thermal barrier for inhibiting the transfer of energy from the environs to an open refrigerated compartment during limited periods of inactivity comprising pliant panel means sufficiently extensive to cover the opening of said compartment, readily releasable fastening means carried by an edge margin of said panel means for cooperation and engagement with fastening means disposed along an edge margin of said compartment to dispose said panel means to be draped across and to close said compartment; said panel means comprising a layer of substantially impervious pliant material and a thermal insulating layer of material carried on the inner face of said layer of pliant material.
Claim 5
Dependent Claim
106 words
A thermal barrier for inhibiting the transfer of energy from the environs to an open refrigerated compartment during limited periods of inactivity comprising pliant panel means sufficiently extensive to cover the opening of said compartment, readily releasable fastening means carried by an edge margin of said panel means for cooperation and engagement with fastening means disposed along an edge margin of said compartment to dispose said panel means to be draped across and to close said compartment; said panel means comprising a layer of substantially impervious pliant material and a thermal insulating layer of material carried on the inner face of said layer of pliant material.
Claim 6
Dependent Claim
56 words
A thermal barrier according to claim 3 in which said panel means comprises a plurality of sections, and means carried by said sections for coupling said sections together to form a sufficiently enlarged panel to close said opening while permitting said sections to be removed individually for limited access to selected portions of said freezer compartment.
Claim 7
Dependent Claim
27 words
A thermal barrier according to claim 4 in which said means for coupling said panel sections together comprises coupling means between each adjacent pair of panel sections.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-08-28 | 1982-02-27 | 1982-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-28 | 1986-02-27 | 1986-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-28 | 1990-02-27 | 1990-08-29 | $7700.00 | Window Closed / Lapsed |