US4305230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing retainer
Assignee: HOLM INDUSTRIES Inc
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Filing: 1979-12-19
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Granted: 1981-12-15
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Expires: 1999-12-19
Abstract
Abstract A retainer for use in a refrigerator door or the like in which insulative material is foamed during a foaming process in the interior of the door. The door or the like is formed of separate shell and pan portions which have edges which are inserted in respective opposing slots of the retainer. Fins are provided on surfaces of the retainer opposite the shell and pan portion edges to form a seal therewith which retains the insulative material within the interior of the door during the foaming process. The fins are made of a material which is softer and more flexible than the material of the remainder of the retainer and the fins eliminate a need to clean foamed insulative material which leaks through the seams between the retainer and the shell and pan portions during the foaming process from the exterior surfaces of the shell and pan portions.
Inventors
- 👤 John T. Gerritsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:03
CPC Classifications
F; F25; F25D; F25D23/00; F25D23/08; F25D23/082; F25D23/087
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
261 words
A retainer for use in assembling a refrigerator door and the like wherein the door is adapted to have foamed insulative material formed in situ on the interior of the door, the door being constructed in a manner which includes an exterior shell and an interior pan, the retainer being arranged to couple the shell and pan together, the retainer having opposed interior slots and the shell having an interior facing edge adapted to be engaged in one of the slots while the pan having an exterior edge adapted to be engaged in the other of the slots, said retainer comprising: a. An elongate extruded member of uniform cross section and having pairs of flanges extending in opposite directions, each pair being spaced apart to provide a slot therebetween whereby there are two slots opening in opposite directions; b. Each flange pair having juxtaposed spaced apart surfaces comprising said slots, the pan and shell of the refrigerator door adapted to be respectively inserted in oppositely opening slots to generally form and combine the insulative material chamber on the interior of the door when so assembled; c. Said retainer having flexible fins formed on at least one of said spaced apart surfaces of each slot and extending across said slot whereby said fins will be engaged by the pan and shell as the said edges are inserted into the respective slots to enable the formation of a seal for preventing leaking of the foam insulative material between the flexible fins and the pan and shell when the foaming operation is carried out.
Claim 2
Dependent Claim
261 words
A retainer for use in assembling a refrigerator door and the like wherein the door is adapted to have foamed insulative material formed in situ on the interior of the door, the door being constructed in a manner which includes an exterior shell and an interior pan, the retainer being arranged to couple the shell and pan together, the retainer having opposed interior slots and the shell having an interior facing edge adapted to be engaged in one of the slots while the pan having an exterior edge adapted to be engaged in the other of the slots, said retainer comprising: a. An elongate extruded member of uniform cross section and having pairs of flanges extending in opposite directions, each pair being spaced apart to provide a slot therebetween whereby there are two slots opening in opposite directions; b. Each flange pair having juxtaposed spaced apart surfaces comprising said slots, the pan and shell of the refrigerator door adapted to be respectively inserted in oppositely opening slots to generally form and combine the insulative material chamber on the interior of the door when so assembled; c. Said retainer having flexible fins formed on at least one of said spaced apart surfaces of each slot and extending across said slot whereby said fins will be engaged by the pan and shell as the said edges are inserted into the respective slots to enable the formation of a seal for preventing leaking of the foam insulative material between the flexible fins and the pan and shell when the foaming operation is carried out.
Claim 3
Dependent Claim
46 words
The retainer as claimed in claim 1 in which the retainer including said flanges is substantially more rigid than the fins and the fins are sufficiently resilient to yield but remain engaged against the pan and shell edges when the latter are inserted into said slots.
Claim 4
Dependent Claim
37 words
The retainer as claimed in claim 1 in which the fins are integral with the said spaced apart surfaces of those of the flanges of the pairs which are adapted to be outward of the door interior.
Claim 5
Dependent Claim
48 words
The retainer as claimed in claim 1 in which the fins slant inward of said respective slots whereby the slant is increased when said pan and shell edges are inserted and will be forced against said pan and shell by any insulative material forced out of the slots.
Claim 6
Dependent Claim
48 words
The retainer as claimed in claim 2 in which the fins slant inward of said respective slots whereby the slant is increased when said pan and shell edges are inserted and will be forced against said pan and shell by any insulative material forced out of the slots.
Claim 7
Dependent Claim
48 words
The retainer as claimed in claim 3 in which the fins slant inward of said respective slots whereby the slant is increased when said pan and shell edges are inserted and will be forced against said pan and shell by any insulative material forced out of the slots.
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) | 1984-12-14 | 1985-06-15 | 1985-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-14 | 1989-06-15 | 1989-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-14 | 1993-06-15 | 1993-12-15 | $7700.00 | Window Closed / Lapsed |