US3559886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable steam generating unit
Assignee: Individual
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Filing: 1968-10-29
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Granted: 1971-02-02
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Expires: 1988-10-29
Abstract
Abstract A unit with no moving parts adapted to generate steam in response to an electric heating element, wherein the water chamber is separated from a steam chamber which, in turn, is separated from the atmosphere by a further protective chamber. Means are provided for the selective use of a plurality of steamemitting heads in order to permit utilization of the device for diverse operations.
Inventors
- 👤 Mary Lee Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:36
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/408; A47L11/4086; A47L11/34; A47L4/00; A61; A61H; A61H33/00; A61H33/06; A61H33/063; B; B44; B44C; B44C7/00; B44C7/02; B44C7/027
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
100 words
A portable steam generating apparatus comprising in combination, a first chamber containing heating means and a liquid, a substantially vapor-tight second chamber at least partially surrounding said first chamber, a third substantially liquid-tight chamber at least partially surrounding said second chamber, each of said chambers having at least one common wall, said first chamber having a portion thereof through which vapor may penetrate into said second chamber, conduit means for transmitting vapor connected at one end to said second chamber, and nozzle means at the other end of said conduit means adapted to emit said vapor in a predetermined pattern.
Claim 2
Dependent Claim
100 words
A portable steam generating apparatus comprising in combination, a first chamber containing heating means and a liquid, a substantially vapor-tight second chamber at least partially surrounding said first chamber, a third substantially liquid-tight chamber at least partially surrounding said second chamber, each of said chambers having at least one common wall, said first chamber having a portion thereof through which vapor may penetrate into said second chamber, conduit means for transmitting vapor connected at one end to said second chamber, and nozzle means at the other end of said conduit means adapted to emit said vapor in a predetermined pattern.
Claim 3
Dependent Claim
43 words
A portable steam generating apparatus according to claim 1, wherein said nozzle has projecting portions in facing relationship spaced apart by a narrow channel, and perforations in the opposing faces of said portions adapted to eject steam into said channel from both sides.
Claim 4
Dependent Claim
95 words
A portable steam generating apparatus comprising in combination; a first chamber containing electrically energized heating means, a second chamber at least partially surrounding said first chamber, said first chamber having a portion thereof through which vapor may penetrate into said second chamber, conduit means for transmitting vapor connected at one end to said second chamber, an electrically controlled valve for closing said conduit means, said valve and said heating means being energized in parallel circuits, and nozzle means at the other end of said conduit means adapted to emit said vapor in a predetermined pattern.
Claim 5
Dependent Claim
95 words
A portable steam generating apparatus comprising in combination; a first chamber containing electrically energized heating means, a second chamber at least partially surrounding said first chamber, said first chamber having a portion thereof through which vapor may penetrate into said second chamber, conduit means for transmitting vapor connected at one end to said second chamber, an electrically controlled valve for closing said conduit means, said valve and said heating means being energized in parallel circuits, and nozzle means at the other end of said conduit means adapted to emit said vapor in a predetermined pattern.
Claim 6
Dependent Claim
37 words
A portable steam generating apparatus according to claim 3, wherein the circuit containing said heating means includes a normally closed pressure-responsive switch operative to open when the vapor pressure in said second chamber exceeds a predetermined value.
Claim 7
Dependent Claim
20 words
A portable steam generating apparatus according to claim 4, wherein the circuit containing said valve includes a manually controlled switch.
Claim 8
Dependent Claim
33 words
A portable steam generating apparatus according to claim 3, iNcluding a third chamber at least partially surrounding said second chamber, said second chamber being substantially vapor-tight and said third chamber being substantially liquid-tight.
Claim 9
Dependent Claim
39 words
A portable steam generating apparatus according to claim 6, including pressure-sensitive valve means between said second and third chambers, operative to open when the pressure in said second chamber exceeds that in said third chamber by a predetermined value.
Claim 10
Dependent Claim
20 words
A portable steam generating apparatus according to claim 7, wherein each of these chambers has at least one common wall.
Claim 11
Dependent Claim
37 words
A portable steam generating apparatus according to claim 8, including vapor-tight conduit means penetrating said second and third chambers and affording fluid access between the outside of said third chamber and the inside of said first chamber.
Claim 12
Dependent Claim
26 words
A portable steam generating apparatus according to claim 9, including means connected to said conduit means for adding detergent to the vapor as it passes therethrough.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |