US4167935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenolic laminate solar absorber panel and method of making
Assignee: Honeywell Inc
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Filing: 1977-09-26
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Granted: 1979-09-18
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Expires: 1997-09-26
Abstract
Abstract A solar flat plate absorber panel is molded from a laminate consisting of a suitable web material impregnated with a thermosetting phenolic resin. The absorber plate is pressure formed from superimposed layers of material and mold-cured to produce a unitary structure having a first or solar radiation absorbing surface on one side and an integral closed hollow lattice work of fluid heat transfer passages on the other or reverse side of the panel. The laminate web may be made from any suitable material such as paper, cloth, canvas or wire mesh which is easily impregnated with a thermosetting phenolic resin. In the preferred embodiment a B-stage phenol-formaldehyde resin is used. The two superimposed sheets of impregnated material are molded between heated platens of an hydraulic press to form an integral structure and fluid pressure between the sheets is utilized to mold the desired passage shape 5.
Inventors
- 👤 Asbjorn M. Severson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:09
CPC Classifications
F; F24; F24S; F24S10/00; F24S10/50; F24S10/503; F24S10/501; F24S10/506; F24S10/70; F24S10/73; F24S80/00; F24S2080/01; F24S2080/015; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y02E10/44
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
64 words
A solar flat plate abosrber panel comprising: an absorber member formed from a superimposed pair of resin impregnated reinforcing web members impregnated with a B-stage thermosetting phenolic resin cured to form a laiminated homogeneous, composite unitary C-stage phenolic resin structure having a surface for receiving and absorbing solar radiation energy, and an integral fluid heat transfer system for conducting away said absorbed heat energy.
Claim 2
Dependent Claim
64 words
A solar flat plate abosrber panel comprising: an absorber member formed from a superimposed pair of resin impregnated reinforcing web members impregnated with a B-stage thermosetting phenolic resin cured to form a laiminated homogeneous, composite unitary C-stage phenolic resin structure having a surface for receiving and absorbing solar radiation energy, and an integral fluid heat transfer system for conducting away said absorbed heat energy.
Claim 3
Dependent Claim
15 words
The solar flat plate absorber panel of claim 1 wherein said web material is paper.
Claim 4
Dependent Claim
13 words
The solar plate absorber of claim 1 wherein said web material is cloth.
Claim 5
Dependent Claim
16 words
The solar flat plate absorber panel of claim 1 wherein said web material is wire mesh.
Claim 6
Dependent Claim
25 words
The solar flat plate absorber panel of claim 1 wherein said web is a material from the group consisting of glass fibers and asbestos fibers.
Claim 7
Dependent Claim
18 words
The solar flat plate absorber panel of claim 1 wherein said thermosetting phenolic resin is a phenol-formaldehyde polymer.
Claim 8
Independent Claim
148 words
A method of fabricating a flat plate solar energy absorbing panel comprising the steps of: superimposing a pair of B-stage phenolic resin impregnated web members of a desired shape between the platens of a press wherein one of said platens has a substantially planer surface and the other of said platens contains recesses in the configuration of a fluid flow lattice pattern; simultaneously subjecting said superimposed members to heat and pressure between said platens of said press while subjecting the internal area between said members to sufficient fluid pressure to shape said members in the form of the patterns described by said platens forming thereby hollow internal fluid flow passages; subjecting said superimposed members to sufficient heat and pressure to mold and cure said members together forming a unitary homogeneous structure of impregnated C-stage phenolic resin structure having hollow internal passages in the form of said lattice pattern.
Claim 9
Independent Claim
148 words
A method of fabricating a flat plate solar energy absorbing panel comprising the steps of: superimposing a pair of B-stage phenolic resin impregnated web members of a desired shape between the platens of a press wherein one of said platens has a substantially planer surface and the other of said platens contains recesses in the configuration of a fluid flow lattice pattern; simultaneously subjecting said superimposed members to heat and pressure between said platens of said press while subjecting the internal area between said members to sufficient fluid pressure to shape said members in the form of the patterns described by said platens forming thereby hollow internal fluid flow passages; subjecting said superimposed members to sufficient heat and pressure to mold and cure said members together forming a unitary homogeneous structure of impregnated C-stage phenolic resin structure having hollow internal passages in the form of said lattice pattern.
Claim 10
Dependent Claim
29 words
The method of claim 7 further comprising the step of inserting a metallic solar energy absorbing member between said substantially planer platen and said phenolic resin impregnated web members.
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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) | 1982-09-17 | 1983-03-19 | 1983-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-17 | 1987-03-19 | 1987-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-17 | 1991-03-19 | 1991-09-18 | $7700.00 | Window Closed / Lapsed |