US4051891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat transfer block means
Assignee: Halm Instrument Co Inc
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Filing: 1975-10-01
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Granted: 1977-10-04
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Expires: 1995-10-01
Abstract
Abstract A heat transfer block has a center core of substantially equally sized stones. The stones are grouted together with voids in between. Upper and lower panels are grouted to the center core. At least one of the panels is a heat transmitting panel. A plurality of heat transfer blocks may be laid end to end to form a heat transfer duct. A building air heating system may comprise a plurality of heat transfer blocks connected together, a means of circulating air through the blocks, and a heat reservoir connected to the outer surface of said heat transfer blocks.
Inventors
- 👤 Henry Harrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:49
CPC Classifications
F; F28; F28D; F28D20/00; F28D20/0056; F24; F24D; F24D11/00; F24D11/006; Y; Y02; Y02E; Y02E60/00; Y02E60/14; Y10; Y10S; Y10S165/00; Y10S165/902; Y10S165/907
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
76 words
Heat transfer means comprising a plurality of modular heat transfer blocks adapted to form a passage for heat transfer fluid, exchanging heat with heat storage materials, when heat transfer blocks being in layered contact with said heat storage materials, each of said heat transfer blocks comprising a center core of substantially equally sized stones, said stones being cemented together with voids in between, and at least one modular heat transmitting panel cemented to the center core.
Claim 2
Dependent Claim
76 words
Heat transfer means comprising a plurality of modular heat transfer blocks adapted to form a passage for heat transfer fluid, exchanging heat with heat storage materials, when heat transfer blocks being in layered contact with said heat storage materials, each of said heat transfer blocks comprising a center core of substantially equally sized stones, said stones being cemented together with voids in between, and at least one modular heat transmitting panel cemented to the center core.
Claim 3
Dependent Claim
78 words
Heat storage means comprising a plurality of modular heat transfer blocks arranged to form a heat exchange passage for heat transfer fluid, exchanging heat with heat storage materials, said heat transfer blocks being in layered contact with said heat storage material, each of said heat transfer blocks comprising a center core of substantially equally sized stones, said stones being cemented together with voids in between, and at least one modular heat transmitting panel cemented to the center core.
Claim 4
Dependent Claim
78 words
Heat storage means comprising a plurality of modular heat transfer blocks arranged to form a heat exchange passage for heat transfer fluid, exchanging heat with heat storage materials, said heat transfer blocks being in layered contact with said heat storage material, each of said heat transfer blocks comprising a center core of substantially equally sized stones, said stones being cemented together with voids in between, and at least one modular heat transmitting panel cemented to the center core.
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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) | 1980-10-03 | 1981-04-04 | 1981-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-03 | 1985-04-04 | 1985-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-03 | 1989-04-04 | 1989-10-04 | $7700.00 | Window Closed / Lapsed |