US3884295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric storage air heater
Assignee: Individual
•
Filing: 1972-06-05
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Granted: 1975-05-20
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Expires: 1992-06-05
Abstract
Abstract A heat storage device for heating rooms comprising a storage core and a fan which conveys air through said core in order to withdraw the heat. The storage core comprises a heat storage material consisting of a hydrate whose liquefaction temperature at solution in its own water of crystallisation comes within the range between approximately 70* and 95*C.
Inventors
- 👤 Nikolaus Laing
- 👤 Ingeborg Laing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:43
CPC Classifications
F; F24; F24H; F24H7/00; F24H7/02; F24H7/04; F24H7/0408; F24H7/0416; F24H9/00; F24H9/20; F24H9/2064; F24H9/2071; F24H9/2078; Y; Y10; Y10S; Y10S165/00; Y10S165/092; Y10S165/126
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
107 words
A heat storage device having an air duct therein and a closure for said duct, said closure comprising a flexible composite laminated strip member normally wound in a roll form and made up of at least two laminae of polymeric material having different coefficients of thermal expansion, said strip being secured at one end thereof adjacent said air duct, an electrical resistance heating means associated with one of said lamina whereby said one lamina may bE heated to cause said one lamina to expand relative to said other lamina and to unwind said strip to mask said air duct in order to regulate passage of air therethrough.
Claim 2
Dependent Claim
107 words
A heat storage device having an air duct therein and a closure for said duct, said closure comprising a flexible composite laminated strip member normally wound in a roll form and made up of at least two laminae of polymeric material having different coefficients of thermal expansion, said strip being secured at one end thereof adjacent said air duct, an electrical resistance heating means associated with one of said lamina whereby said one lamina may bE heated to cause said one lamina to expand relative to said other lamina and to unwind said strip to mask said air duct in order to regulate passage of air therethrough.
Claim 3
Dependent Claim
24 words
A heat storage device according to claim 1 whereby said one lamina having the heating means associated therewith comprises an electrically conductive polymeric material.
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) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |