Patent US1680804A successfully refreshed from Google Patents.
Patent US4175541A successfully refreshed from Google Patents.
US4175541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solar heating system
Assignee: Individual
•
Filing: 1977-11-14
•
Granted: 1979-11-27
•
Expires: 1997-11-14
Abstract
Abstract A solar heating system comprising a collector panel with a plurality of beverage cans or the like received in holes drilled therethrough. The surfaces of the panel and the cans protruding from the front of the panel are painted with a dark, heat-absorbing paint and the circular tops of the cans, which are exposed through the other side of the panel, are left uncoated to radiate heat directly into a heat storage medium, such as a pile of rocks on the other side. A heating duct exits from the top of the heat storage chamber to the area to be heated and the return duct enters at the same level. Circulation of air through the heating duct is mechanically induced.
Inventors
- 👤 Calvert H. Midgley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:06
CPC Classifications
F; F24; F24S; F24S60/00; F24S10/00; F24S10/50; F24S10/55; F24S70/00; F24S70/60; F24S70/65; F24S90/00; F24S90/10; F24S80/00; F24S2080/01; F24S2080/018; F24S60/30; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y02E10/44
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
153 words
A solar heating system comprising: a collector panel having a front side adapted for exposure to solar radiation and a back side; a heat absorbing coating on said front side; a plurality of circular openings through said panels; a plurality of hollow metallic cylinders in said openings with most of the lengths thereof extending upward from said front side; end closures on said cylinders on the end exposed from said front side; heat absorbing coatings on the outer surfaces of said end closures and exterior portions of said cylinders exposed from said front side; and top closures with reflective surfaces on at least some of said cylinders exposed through the back side of said panel; wherein said panel is part of an enclosure and including an accumulation of materials having heat retaining characteristics in said inclosure rearward of the back side of said panel; whereby, said cylinders radiate heat directly to said materials.
Claim 2
Dependent Claim
153 words
A solar heating system comprising: a collector panel having a front side adapted for exposure to solar radiation and a back side; a heat absorbing coating on said front side; a plurality of circular openings through said panels; a plurality of hollow metallic cylinders in said openings with most of the lengths thereof extending upward from said front side; end closures on said cylinders on the end exposed from said front side; heat absorbing coatings on the outer surfaces of said end closures and exterior portions of said cylinders exposed from said front side; and top closures with reflective surfaces on at least some of said cylinders exposed through the back side of said panel; wherein said panel is part of an enclosure and including an accumulation of materials having heat retaining characteristics in said inclosure rearward of the back side of said panel; whereby, said cylinders radiate heat directly to said materials.
Claim 3
Dependent Claim
62 words
The solar heating system defined by claim 1 including: through openings at the top and bottom of said panel to enable flow of cooler air from said back side to the front side of the bottom to flow upward across said front side and said cylinders and then, after being warmed, flow to the back side of the top of said panel.
Claim 4
Dependent Claim
47 words
The solar heating system defined by claim 1 including: a pair of parallel transparent sheets spaced generally parallel to and above the front side of said panel to enable passage of solar rays but with an air space between them to insulate against outward passage of heat.
Claim 5
Dependent Claim
55 words
The solar heating system defined by claim 1 including: a heating duct from the top of said enclosure to the lower portion on of a room being heated; and a return duct from the upper portion of said room being heated to the upper portion of said enclosure at the level of said heating duct.
References Cited (Backward Citations)
US2294137A
Cited
US3311165A
Cited
US3875925A
Cited
US3894685A
Cited
US4094300A
Cited
US4088266A
Cited
US4088115A
Cited
US4059226A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-11-26 | 1983-05-28 | 1983-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-26 | 1987-05-28 | 1987-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-26 | 1991-05-28 | 1991-11-27 | $7700.00 | Window Closed / Lapsed |