Patent US3813036A successfully refreshed from Google Patents.
US3813036A
Expired / Lapsed
US
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Heating system
Assignee: Individual
•
Filing: 1973-05-08
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Granted: 1974-05-28
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Expires: 1993-05-08
Abstract
Abstract A heating system utilizing a closed oil system and a friction element for heating the oil as the oil is forced through the element. The oil''s path is from a storage tank through the friction element, then to the radiation units and then is returned to the storage tank. A high temperature path and a low temperature path are provided to improve comfort control. The heating element is formed of woven stainless steel which is compressed in a mold to obtain sufficient strand density to produce a high heat of friction.
Inventors
- 👤 G Lutz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:44
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/1919; F; F24; F24D; F24D7/00; F24V; F24V40/00; F24V40/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
116 words
In a closed heating system utilizing a liquid as the heat transfer medium and having storage means for storing the liquid, pump means for pumping the liquid through the system, friction heating means for raising the temperature of the liquid as the liquid is pumped through the friction heating means, radiation means for transferring heat from the liquid to the ambient atmosphere, the friction heating means comprising: a compressed block formed of woven metal wire and having a density of the order of 0.28 pounds per cubic inch such that the liquid is compelled to follow a tortuous path through the block to thereby acquire heat due to the frictional contact with the woven metal wire.
Claim 2
Dependent Claim
116 words
In a closed heating system utilizing a liquid as the heat transfer medium and having storage means for storing the liquid, pump means for pumping the liquid through the system, friction heating means for raising the temperature of the liquid as the liquid is pumped through the friction heating means, radiation means for transferring heat from the liquid to the ambient atmosphere, the friction heating means comprising: a compressed block formed of woven metal wire and having a density of the order of 0.28 pounds per cubic inch such that the liquid is compelled to follow a tortuous path through the block to thereby acquire heat due to the frictional contact with the woven metal wire.
Claim 3
Dependent Claim
66 words
The invention of claim 1 including: sensing means for sensing the temperature of the liquid leaving the friction heating means; and switching means responsive to the sensing means for diverting the liquid flow away from the friction heating means when the temperature is above a first predetermined value and directing said flow through the friction heating means when the temperature is below a second predetermined value.
Claim 4
Dependent Claim
70 words
The invention of claim 2 including: second friction heating means connected in parallel with the friction heating means and having a shorter tortuous path therethrough than the friction heating means; the switching means directing the liquid flow through the second friction heating means when the temperature is above the first predetermined value and directing the flow through the friction heating means when the temperature is below the second predetermined value.
Claim 5
Dependent Claim
25 words
The invention of claim 2 wherein: the liuqid flow is diverted away from the radiation means when the temperature is above the first predetermined value.
References Cited (Backward Citations)
US2254587A
Cited
US2304689A
Cited
US2764147A
Cited
US2748802A
Cited
US2915299A
Cited
US3720372A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |