Patent US4844975A successfully refreshed from Google Patents.
US4844975A
Expired / Lapsed
US
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Reinforced composite sandwich panel assembly
Assignee: Bally Engineered Structures Inc
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Filing: 1988-03-04
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Granted: 1989-07-04
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Expires: 2008-03-04
Abstract
Abstract A composite panel assembly for walk-in coolers and freezers and similar structures has a thickness of low strength insulation sandwiched between two facings. A reinforcing structural member is bonded to the insulation side of one of the facings and extends across at least about half of the thickness of the insulation but is spaced from the opposite facing. The reinforcing member does not provide a direct thermal path between facings; thus preventing condensation on the facing during high humidity and/or low temperature conditions.
Inventors
- 👤 Ernest N. Litzenberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:59
CPC Classifications
F; F25; F25D; F25D23/00; F25D23/06; E; E04; E04C; E04C2/00; E04C2/02; E04C2/26; E04C2/284; E04C2/292; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/249921; Y10T428/249953; Y10T428/249955; Y10T428/249958; Y10T428/24996; Y10T428/249982; Y10T428/249984; Y10T428/249986
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
80 words
A sandwich panel assembly comprising a thickness of foamed-in-place thermal insulation disposed throughout the space between two facings and at least one reinforcing member disposed within the thermal insulation bonded to the insulation side of only one of the two facings, the member extending through at least about half of the thickness of the insulation toward and being spaced apart from the second facing with the foamed-in-place thermal insulation disposed in the space between the member and the second facing.
Claim 2
Dependent Claim
80 words
A sandwich panel assembly comprising a thickness of foamed-in-place thermal insulation disposed throughout the space between two facings and at least one reinforcing member disposed within the thermal insulation bonded to the insulation side of only one of the two facings, the member extending through at least about half of the thickness of the insulation toward and being spaced apart from the second facing with the foamed-in-place thermal insulation disposed in the space between the member and the second facing.
Claim 3
Dependent Claim
36 words
The assembly of claim 1 wherein the facing to which the reinforcing member is bonded has opposite ends and the member extends at least about half of the length between the opposite ends of the facing.
Claim 4
Dependent Claim
24 words
The assembly of claim 2 wherein the reinforcing member extends across at least 90% of the length between the opposite ends of the facing.
Claim 5
Dependent Claim
25 words
The assembly of claim 3 wherein the reinforcing member has a length which is less than the length between the opposite ends of the facing.
Claim 6
Dependent Claim
15 words
The assembly of claim 2 wherein the reinforcing member is adhesively bonded to the facing.
Claim 7
Dependent Claim
20 words
The assembly of claim 5 wherein the adhesive bonding forms a continuous layer between the reinforcing member and the facing.
Claim 8
Dependent Claim
37 words
The assembly of claim 5 wherein the reinforcing member is of channel section having a base portion between two substantially perpendicular portions and one of the perpendicular portions of the channel section is bonded to the facing.
Claim 9
Dependent Claim
18 words
The assembly of claim 7 wherein the base portion of the channel section has at least one aperture.
Claim 10
Dependent Claim
18 words
The assembly of claim 8 wherein the base portion of the channel section has a plurality of aperatures.
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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) | 1992-07-03 | 1993-01-02 | 1993-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-03 | 1997-01-02 | 1997-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-03 | 2001-01-02 | 2001-07-04 | $7700.00 | Window Closed / Lapsed |