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US3676937A
Expired / Lapsed
US
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Solvent reclaimer controls
Assignee: Hoyt Manufacturing Corp
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Filing: 1970-10-22
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Granted: 1972-07-18
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Expires: 1990-10-22
Abstract
Abstract Controls for a solvent recovery apparatus regulate the flow of coolant in a condenser coil responsive to the temperature of air circulating in a closed pathway through a tumbler.
Inventors
- 👤 Harry W Janson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:27
CPC Classifications
D; D06; D06F; D06F43/00; D06F43/08; D06F43/086; D06B; D06B9/00; D06B9/06; Y; Y02; Y02P; Y02P70/00; Y02P70/50; Y02P70/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
In solvent reclaiming apparatus having a tumbler and a closed duct system for directing an air stream in a closed circuit through said tumbler, including in said circuit, a fan, a condenser coil and means for heating air circulating through said duct system, means for causing coolant to flow through said condenser coil, means for regulating said flow of coolant responsive to the temperature of the air flowing through said closed duct system as it leaves said condenser coil, control means for cutting out operation of said regulating means while the temperature of the air in said stream as it emerges from said tumbler is below a set value during a warm-up cycle and means for cutting out operation of said regulating means even when the temperature of the air emerging from said condenser coil is below a value for which it is set normally to prevent flow of coolant through said condenser coil, to permit flow of coolant during a cool down cycle regardless of the temperature of the air emerging from the condenser coil.
Claim 2
Dependent Claim
137 words
In solvent reclaiming apparatus having a tumbler and a closed duct system for directing an air stream in a closed circuit through said tumbler, including in said circuit, a fan, a condenser coil and means for heating air circulating through said duct system, means for causing coolant to flow through said condenser coil, means for regulating said flow of coolant responsive to the temperature of the air flowing through said closed duct system as it leaves said condenser coil, a damper for directing said air into a pathway by-passing said heating means, and means overriding operation of said regulating means when said damper is set to direct through said by-pass pathway to permit flow of coolant through said condenser coil during a cool down cycle regardless of the temperature of the air emerging from the condenser coil.
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) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |