US4083357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solar cooker
Assignee: Individual
•
Filing: 1976-08-19
•
Granted: 1978-04-11
•
Expires: 1996-08-19
Abstract
Abstract A solar heating device for the cooking of food, consisting of a parabolic trough reflector and having support legs attached at the approximate center of gravity of the reflector and oven assembly. The reflector longitudinal supports serving to hold a cooking oven consisting of a bottom of transparent plastic and a detachable top made of insulation and lined inside with a reflective material. The items to be cooked are supported inside the oven by means of a skewer or a skewer supported pan. The reflector assembly also having an aiming device mounted on it's perpendicular support to assure reflector focus by means of shadows.
Inventors
- 👤 Lawrence Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:50
CPC Classifications
F; F24; F24S; F24S20/00; F24S20/30; F24S23/00; F24S23/70; F24S23/74; F24S50/00; F24S50/20; Y; Y02; Y02A; Y02A40/00; Y02A40/90; Y02A40/924; Y02A40/926; Y02B; Y02B40/00; Y02B40/18; Y02E; Y02E10/00; Y02E10/40; Y02E10/47
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
42 words
A solar cooker consisting of a parabolic reflector trough having ends supported by longitudinal supports, perpendicular supports connected to the center of the longitudinal supports, said perpendicular supports having folding leg assemblies, an aiming device and a cylindrical oven assembly attached thereto.
Claim 2
Dependent Claim
42 words
A solar cooker consisting of a parabolic reflector trough having ends supported by longitudinal supports, perpendicular supports connected to the center of the longitudinal supports, said perpendicular supports having folding leg assemblies, an aiming device and a cylindrical oven assembly attached thereto.
Claim 3
Dependent Claim
54 words
A solar cooker described in claim 1 above, with support legs that will detach easily and fold for portability, by merely spreading the leg assemblies at their apex to disengage a pin from the hole in each side of the reflector and support assembly and pushing the unpinned ends of the leg assemblies together.
Claim 4
Dependent Claim
51 words
A solar cooker described in claim 1 above, with a cylindrical oven assembly made of transparent plastic to allow the sun's rays inside to the focal line of the cooker and prevent rereflection from the oven to the reflector and a reflective insulated oven cover to keep the solar heat inside.
Claim 5
Dependent Claim
66 words
A solar cooker described in claim 1 above, with a means for holding a skewer on the perpendicular support to hold food or to suspend a cooking pan inside the cylindrical oven and on the focal line so that when the focus angle is changed to track the sun, the suspended pan will pivot on the skewer so the contents of the pan will not spill.
Claim 6
Dependent Claim
75 words
A solar cooker described in claim 1 above, with an aiming device mounted on a perpendicular support, consisting of three pins, with one pin located at the top end of the support and two pins located at the bottom end of the support in such a way that the shadow of the one pin will fall on the support leg between the shadow of the two pins when the reflector assembly is in proper focus.
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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) | 1981-04-10 | 1981-10-10 | 1982-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-10 | 1985-10-10 | 1986-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-10 | 1989-10-10 | 1990-04-11 | $7700.00 | Window Closed / Lapsed |