Patent US4042524A successfully refreshed from Google Patents.
US4042524A
Expired / Lapsed
US
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Methods for absorption heating
Assignee: Honeywell International Inc
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Filing: 1975-04-10
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Granted: 1977-08-16
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Expires: 1995-04-10
Abstract
Abstract The invention comprises a novel compound having the chemical name 2-(t-butoxymethyl) tetrahydrofuran and a novel absorption pair comprising 2-(t-butoxymethyl) tetrahydrofuran as the solvent and a lower alkyl fluorocarbon as the solute. The invention further comprises a method of absorption heating and method of absorption refrigeration using the novel absorption pair and absorption heating and an absorption cooling apparatus using the novel absorption pair.
Inventors
- 👤 Henry R. Nychka
- 👤 Richard E. Eibeck
- 👤 Chien C. Li
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:22
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/04; C07D307/10; C07D307/12; C09; C09K; C09K5/00; C09K5/02; C09K5/04; C09K5/047
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
In a heating method wherein a gaseous solute is dissolved in a solvent to release heat of solution in the vicinity of an area to be heated, the resulting solution is heated to release gaseous solute from the solvent, the released solute is condensed to form liquid solute and to release heat of condensation in the vicinity of the area to be heated and evaporating the resulting liquid solute at a location removed from the area to be heated, the improvement comprising using a fluorocarbon selected from the group consisting of dichloromonofluoromethane, monochlorodifluoromethane, trifluoromethane and monochloromonofluoromethane as the solute and 2-(t-butoxymethyl) tetrahydrofuran as the solvent.
Claim 2
Dependent Claim
105 words
In a heating method wherein a gaseous solute is dissolved in a solvent to release heat of solution in the vicinity of an area to be heated, the resulting solution is heated to release gaseous solute from the solvent, the released solute is condensed to form liquid solute and to release heat of condensation in the vicinity of the area to be heated and evaporating the resulting liquid solute at a location removed from the area to be heated, the improvement comprising using a fluorocarbon selected from the group consisting of dichloromonofluoromethane, monochlorodifluoromethane, trifluoromethane and monochloromonofluoromethane as the solute and 2-(t-butoxymethyl) tetrahydrofuran as the solvent.
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) | 1980-08-15 | 1981-02-14 | 1981-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-15 | 1985-02-14 | 1985-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-15 | 1989-02-14 | 1989-08-16 | $7700.00 | Window Closed / Lapsed |