US3861865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drying system
Assignee: ROSCO MACHINERY Co Inc
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Filing: 1974-02-19
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Granted: 1975-01-21
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Expires: 1994-02-19
Abstract
Abstract An improved laundry dryer-conditioner is provided which utilizes air moving at a relatively high velocity and in a significant volume to replace the expensive fragile, heavy and short-lived refactory and other heat resistive materials, which are conventionally found in the combustion and air-heating chambers of such apparatus.
Inventors
- 👤 Frederick W Grantham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:29
CPC Classifications
D; D06; D06F; D06F58/00; D06F58/20; D06F58/26; D06F58/263; D06F2103/00; D06F2103/52; D06F2105/00; D06F2105/28
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
121 words
Apparatus for drying articles by the flow of pre-heated air comprising: a housing having an air inlet opening and an air outlet opening; means within the housing for supporting the articles to be dried; air conduit means mounted externally of the housing having portions in alignment with the inlet and outlet openings respectively; a combustion chamber having a flame source end, an opposed apertured end, and a discrete side opening spaced from said apertured end toward said flame source end and communicating with the conduit means aligned with the housing inlet opening; and blower means coupled in series with the conduit means for directing air from the housing outlet opening to the vicinity of the apertured end of the combustion chamber.
Claim 2
Dependent Claim
121 words
Apparatus for drying articles by the flow of pre-heated air comprising: a housing having an air inlet opening and an air outlet opening; means within the housing for supporting the articles to be dried; air conduit means mounted externally of the housing having portions in alignment with the inlet and outlet openings respectively; a combustion chamber having a flame source end, an opposed apertured end, and a discrete side opening spaced from said apertured end toward said flame source end and communicating with the conduit means aligned with the housing inlet opening; and blower means coupled in series with the conduit means for directing air from the housing outlet opening to the vicinity of the apertured end of the combustion chamber.
Claim 3
Dependent Claim
45 words
Apparatus in accordance with claim 1 wherein the conduit means aligned with the inlet opening of the housing is spaced by a predetermined distance from said opening to permit ambient air to be drawn into said opening together with preheated air from the combustion chamber.
Claim 4
Dependent Claim
45 words
Apparatus in accordance with claim 2 wherein the combustion chamber, blower means and conduit means are arranged to draw a portion of the air exiting the housing outlet opening into the combustion chamber through the apertured end for further heating and recirculation through the housing.
Claim 5
Dependent Claim
39 words
Apparatus in accordance with claim 3 wherein the combustion chamber is configured to form an air barrier for the flame from the flame source end by means of the air flowing into the combustion chamber from the apertured end.
Claim 6
Dependent Claim
43 words
Apparatus in accordance with claim 1 wherein the combustion chamber comprises spaced-apart inner and outer walls with support means extending between the two, the walls and support means defining an inter wall space open at both ends for the flow of air therethrough.
Claim 7
Dependent Claim
36 words
Apparatus in accordance with claim 5 wherein each of said inner and outer walls includes means defining respective aligned side openings therein communicating with said conduit means in alignment with the inlet opening of the housing.
Claim 8
Dependent Claim
38 words
Apparatus in accordance with claim 6 wherein the conduit means aligned with the outlet opening of the housing further includes sealing means for establishing an abutting relationship between said conduit means and the housing at said outlet opening.
Claim 9
Dependent Claim
63 words
Apparatus in accordance with claim 3 wherein the conduit means further includes an exhaust stack portion and a conduit portion for directing air from the blower means to the exhaust stack portion, both the outlet of said conduit portion and the inlet of said exhaust stack portion being positioned adjacent the apertured end of the combustion chamber but spaced apart from each other.
Claim 10
Dependent Claim
36 words
Apparatus in accordance with claim 8 wherein the spacing between the conduit and exhaust stack portions is open to admit ambient air as drawn by the blower means through the apertured end of the combustion chamber.
Claim 11
Dependent Claim
65 words
Apparatus in accordance with claim 5 wherein the combustion chamber comprises a geneRally cylindrical inner wall having attached, generally closed end walls, the flame source end wall having a flame source mounted therein and extending therethrough, the opposed apertured end wall having a central aperture therein approximating one-third the diameter of the cylindrical inner wall, and a generally cylindrical outer wall open at both ends.
Claim 12
Dependent Claim
22 words
Apparatus in accordance with claim 1 further including control means for coordinating the actuation of said flame source and said blower 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) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |