US3739487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drying apparatus
Assignee: Individual
•
Filing: 1971-05-25
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Granted: 1973-06-19
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Expires: 1991-05-25
Abstract
Abstract A drying apparatus comprising a cabinet for housing articles to be dried and an air conditioning plant including air cooling means to condense water from water vapor-laden air drawn in from the cabinet by a circulating fan and means to heat the air recycled back into the cabinet, the air cooling means and air heating means being the evaporator and condenser respectively of a refrigeration plant, a metered part of the circulating air only being passed over the evaporator by a second fan and part of the heat produced by the condenser being lost externally to the apparatus.
Inventors
- 👤 R Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:20
CPC Classifications
D; D06; D06F; D06F58/00; D06F58/20; D06F58/206; F; F24; F24F; F24F3/00; F24F3/12; F24F3/14; F24F3/1405
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
95 words
An improvement in a drying apparatus including a chamber to contain articles to be dried and an air conditioning unit having air displacing means for drawing air in from said chamber and passing same over the evaporator of a refrigerating plant, and then over the condenser of said refrigerating plant, and back into said chamber, wherein the improvement comprises in combination provision of means whereby part of the heat produced by said condenser is ejected externally of said apparatus and a bypass means whereby a part only of the air is passed over the evaporator.
Claim 2
Dependent Claim
95 words
An improvement in a drying apparatus including a chamber to contain articles to be dried and an air conditioning unit having air displacing means for drawing air in from said chamber and passing same over the evaporator of a refrigerating plant, and then over the condenser of said refrigerating plant, and back into said chamber, wherein the improvement comprises in combination provision of means whereby part of the heat produced by said condenser is ejected externally of said apparatus and a bypass means whereby a part only of the air is passed over the evaporator.
Claim 3
Dependent Claim
29 words
A drying apparatus as claimed in 1, wherein the condenser is in two parts one part giving up heat to a flowable medium for use external to the apparatus.
Claim 4
Dependent Claim
34 words
A drying apparatus as claimed in claim 2, wherein the by-pass means is provided at the inlet to the air conditioning unit whereby only a part of the circulating air passes across the evaporator.
Claim 5
Dependent Claim
122 words
An improvement in a drying apparatus including a chamber to contain articles to be dried and an air conditioning unit having air displacing means for drawing air in from said chamber and passing a part only of same over an evaporator of a refrigerating plant, the air stream then passing over the condenser of the refrigerating plant and back into said chamber, wherein the improvement comprises provision of a second auxiliary air displacing means serving to pass a metered quantity of air, constituting a part only of the air drawn in, over said evaporator, the condenser being divided into two or more parts, one of said parts serving to heat the air, the other part giving up heat externally to said apparatus.
Claim 6
Dependent Claim
122 words
An improvement in a drying apparatus including a chamber to contain articles to be dried and an air conditioning unit having air displacing means for drawing air in from said chamber and passing a part only of same over an evaporator of a refrigerating plant, the air stream then passing over the condenser of the refrigerating plant and back into said chamber, wherein the improvement comprises provision of a second auxiliary air displacing means serving to pass a metered quantity of air, constituting a part only of the air drawn in, over said evaporator, the condenser being divided into two or more parts, one of said parts serving to heat the air, the other part giving up heat externally to said apparatus.
Claim 7
Dependent Claim
37 words
A drying apparatus as claimed in claim 4, wherein the other part of the condenser is located in a side wall of the apparatus and forms a convector heater assisted, if necessary, by forced draft producing means.
Claim 8
Dependent Claim
32 words
A drying apparatus as claimed in claim 5, wherein the evaporator and auxiliary air displacing means comprise an assembly positioned within the air conditioning unit and located in the recirculating air stream.
Claim 9
Dependent Claim
35 words
A drying apparatus as claimed in claim 5, wherein the inlet to the air conditioning unit is divided into two parts, one part directing air over the evaporator, and incorporating the auxiliary air displacing means.
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) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |