Patent US2864429A successfully refreshed from Google Patents.
US3673701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined building humidifier and clothes dryer
Assignee: Individual
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Filing: 1970-06-16
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Granted: 1972-07-04
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Expires: 1990-06-16
Abstract
Abstract Moisture laden air from a clothes dryer is selectively directed either to the outside of the building or to the cold air return of the building''s forced air heating system. Control means are provided for sensing the flow of air from the dryer to the cold air return for insuring that the motor driven blower of the forced air heating system is energized whenever the moisture laden air from the dryer is flowing to the cold air return.
Inventors
- 👤 Robert V Albertson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:09
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/12; F24F3/14; D; D06; D06F; D06F58/00; D06F58/20; F24D; F24D5/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
131 words
Apparatus for adding humidity to a building comprising in combination: a. a laundry dryer of the type including a heat source, a chamber for receiving moisture laden articles and a fan for directing air from said heat source through said chamber to an exhaust port; b. a forced air heating system having a furnace for heating air, a network of heating ducts, a cold air return and a motor driven blower for forcing said heated air through said network of heating ducts and said cold air return; c. control means responsive to the operation of said laundry dryer for energizing said motor driven blower and d. means connecting said exhaust port to said cold air return of said forced air heating system for conveying said moisture laden air to said furnace.
Claim 2
Dependent Claim
131 words
Apparatus for adding humidity to a building comprising in combination: a. a laundry dryer of the type including a heat source, a chamber for receiving moisture laden articles and a fan for directing air from said heat source through said chamber to an exhaust port; b. a forced air heating system having a furnace for heating air, a network of heating ducts, a cold air return and a motor driven blower for forcing said heated air through said network of heating ducts and said cold air return; c. control means responsive to the operation of said laundry dryer for energizing said motor driven blower and d. means connecting said exhaust port to said cold air return of said forced air heating system for conveying said moisture laden air to said furnace.
Claim 3
Dependent Claim
41 words
Apparatus as in claim 1 wherein said control means includes a damper disposed between said exhaust port and said cold air return of said forced air heating system for controlling the flow of moisture laden air to said cold air return.
Claim 4
Dependent Claim
44 words
Apparatus as in claim 1 wherein said control means includes means responsive to the flow of air in said means connecting said exhaust port to said cold air return of said forced air heating system for controlling the energization of said motor driven blower.
Claim 5
Dependent Claim
25 words
Apparatus as in claim 1 further including means for selectively directing said moisture laden air outside of said building or into said cold air return.
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) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |