US4262376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for manufacturing a solar energy collector
Assignee: Individual
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Filing: 1979-09-25
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Granted: 1981-04-21
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Expires: 1999-09-25
Abstract
Abstract Illustratively, a portion of a thin sheet of high thermal conductivity material is wrapped in tight thermal communication about the external surface of a working fluid conduit. A hinged male die presses part of the portion of the sheet into a semi-cylindrical female mold. The die is removed and the fluid conduit is placed in the semi-cylindrical sheet. Another hinged mold, with the aid of a drawing up mechanism bend the balance of the sheet portion into thermal communication with the hitherto exposed conduit surface. Beveled mold edge also exposes a seam for joining the sheet portion to the balance of the sheet.
Inventors
- 👤 Robert L. Nevins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:45
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/02; B21D53/04; B21D5/00; B21D5/04; B21D5/042; F; F24; F24S; F24S10/00; F24S10/70; F24S10/75; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y02E10/44; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53996
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
Apparatus for manufacturing a tube with an attached solar heat collecting sheet comprising a plate, a first half cylindrical female mold attached to one edge of the plate, a second half cylindrical female mold pivoted to the first female mold at an edge that is spaced from said plate, and a drawing up device associated with said first and second female molds for pressing said molds together, a hinge protruding above the plate and adjacent to the female mold edge of the plate, a male die pivotally mounted by means of the protruding hinge to enable the male die to be pressed down into the first female mold.
Claim 2
Dependent Claim
108 words
Apparatus for manufacturing a tube with an attached solar heat collecting sheet comprising a plate, a first half cylindrical female mold attached to one edge of the plate, a second half cylindrical female mold pivoted to the first female mold at an edge that is spaced from said plate, and a drawing up device associated with said first and second female molds for pressing said molds together, a hinge protruding above the plate and adjacent to the female mold edge of the plate, a male die pivotally mounted by means of the protruding hinge to enable the male die to be pressed down into the first female mold.
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) | 1984-04-20 | 1984-10-20 | 1985-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-20 | 1988-10-20 | 1989-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-20 | 1992-10-20 | 1993-04-21 | $7700.00 | Window Closed / Lapsed |