US4469089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lightweight, low cost radiant energy collector and method for making same
Assignee: RAM PRODUCTS Inc
•
Filing: 1982-02-02
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Granted: 1984-09-04
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Expires: 2002-02-02
Abstract
Abstract A dish-shaped, radiant energy collector comprises a thin, concave, thermoplastic cover having a reflective layer of metallization vapor deposited on the convex side thereof. A coating of foamed resin is applied to the metallization in order to render the collector self-supporting. Struts or a layer of honeycomb cardboard and/or fiberglass may be introduced into the sandwiched composite to provide further structural rigidity. The cover is produced by forming a flat sheet of acrylic plastic which is transparent to the wavelengths of interest.
Inventors
- 👤 Paul O. Sorko-Ram
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:17
CPC Classifications
F; F24; F24S; F24S23/00; F24S23/70; F24S23/82; Y; Y02; Y02E; Y02E10/00; Y02E10/40
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
63 words
A concave, radiant energy collector, consisting of: a concave sheet of flexible thermoplastic material substantially transparent ot said radiant energy; a coating of reflective material vapor deposited on the convex side of said sheet; and a structurally supporting layer of foamed resin on said reflective layer, said layer of foamed resin possessing sufficient rigidity to support said concave sheet and said reflective coating.
Claim 2
Dependent Claim
63 words
A concave, radiant energy collector, consisting of: a concave sheet of flexible thermoplastic material substantially transparent ot said radiant energy; a coating of reflective material vapor deposited on the convex side of said sheet; and a structurally supporting layer of foamed resin on said reflective layer, said layer of foamed resin possessing sufficient rigidity to support said concave sheet and said reflective coating.
Claim 3
Dependent Claim
11 words
The collector of claim 1, wherein said thermoplastic material is acrylic.
Claim 4
Dependent Claim
23 words
The collector of claim 1, wherein said sheet has a thickness less than that required for a dimensionally stable, self-supporting concave thermoplastic sheet.
Claim 5
Dependent Claim
18 words
The collector of claim 1, including means substantially imbedded in said foamed resin layer for stiffening said collector.
Claim 6
Dependent Claim
16 words
The collector of claim 4, wherein said stiffening means includes randomly oriented, descrete pieces of fiberglass.
Claim 7
Dependent Claim
19 words
The collector of claim 4, wherein said stiffening means includes a plurality of circumferentially spaced, radially extending, rigid ribs.
Claim 8
Dependent Claim
23 words
The collector of claim 1, including a layer of reinforced polyester and a layer of open cell honeycomb material on said reflective coating.
Claim 9
Dependent Claim
35 words
The collector of claim 1, wherein said collector is defined by a plurality of generally pie shaped segments each consisting of a sandwiched construction of said concave sheet, said reflective coating and said foamed resin.
Claim 10
Dependent Claim
18 words
The collector of claim 1, including a layer of paint between said reflective coating and said foamed resin.
Claim 11
Dependent Claim
22 words
The collector of claim 1, including a layer of randomly oriented, descrete pieces of fiberglass bonded together substantially over said foamed resin.
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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) | 1987-09-04 | 1988-03-05 | 1988-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-04 | 1992-03-05 | 1992-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-04 | 1996-03-05 | 1996-09-04 | $7700.00 | Window Closed / Lapsed |