US3919793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extra capacity steam iron
Assignee: General Electric Co
•
Filing: 1974-12-10
•
Granted: 1975-11-18
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Expires: 1994-12-10
Abstract
Abstract An electric steam iron having first and second steam generating means for converting water into steam for selective dispersal through primary and secondary ports in the soleplate of the iron. The first steam generating means communicates only with the primary ports through a primary plenum means, and the second steam generating means communicates only with the secondary ports through a secondary plenum means. Water supply means are provided for selectively supplying water to said first and second steam generating means such that water supplied to the first steam generating means is discharged as steam only through the primary ports and water supplied to the second steam generating means is discharged as steam only through the secondary ports.
Inventors
- 👤 Kaj Toft
- 👤 Wendell C Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:59
CPC Classifications
D; D06; D06F; D06F75/00; D06F75/08; D06F75/10; D06F75/14; D06F75/18
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
171 words
An extra capacity steam iron comprising: a soleplate; a heating element for heating said soleplate; cover means on said soleplate; said soleplate and said cover means defining therebetween primary plenum means, secondary plenum means independent of said primary plenum means, first steam generating means communicating with said primary plenum means, and second steam generating means independent of said first steam generating means communicating with said secondary plenum means; and supply means for selectively supplying water to said first steam generating means and for selectively supplying water to said second steam generating means, said soleplate having a plurality of primary ports therethrough communicating only with said primary plenum means such that water supplied to said first steam generating means is converted to steam and discharged from the iron through said primary ports, and said soleplate having at least one secondary port therethrough communicating only with said secondary plenum means such that water supplied to said second steam generating means is converted to steam and discharged from the iron through said secondary port.
Claim 2
Dependent Claim
171 words
An extra capacity steam iron comprising: a soleplate; a heating element for heating said soleplate; cover means on said soleplate; said soleplate and said cover means defining therebetween primary plenum means, secondary plenum means independent of said primary plenum means, first steam generating means communicating with said primary plenum means, and second steam generating means independent of said first steam generating means communicating with said secondary plenum means; and supply means for selectively supplying water to said first steam generating means and for selectively supplying water to said second steam generating means, said soleplate having a plurality of primary ports therethrough communicating only with said primary plenum means such that water supplied to said first steam generating means is converted to steam and discharged from the iron through said primary ports, and said soleplate having at least one secondary port therethrough communicating only with said secondary plenum means such that water supplied to said second steam generating means is converted to steam and discharged from the iron through said secondary port.
Claim 3
Dependent Claim
37 words
An extra capacity steam iron as defined by claim 1 in which said second steam generating means comprises a soleplate boiler chamber and a circuitous passage means connecting said soleplate boiler chamber and said secondary plenum means.
Claim 4
Dependent Claim
58 words
An extra capacity steam iron as defined by claim 2 in which said secondary plenum means comprises a pair of plenums Disposed symmetrically with respect to the longitudinal centerline of said soleplate and at least one secondary port communicates with each of said plenums, said circuitous passage means being disposed symmetrically about the longitudinal centerline of said soleplate.
Claim 5
Dependent Claim
53 words
An extra capacity steam iron as defined by claim 2 in which said first steam generating means includes a soleplate boiler chamber, said soleplate boiler chamber of said second steam generating means being located forward of said soleplate boiler chamber of said first steam generating means in the nose portion of said soleplate.
Claim 6
Dependent Claim
20 words
An extra capacity steam iron as defined by claim 2 in which said circuitous passage means crosses said heating element.
Claim 7
Dependent Claim
43 words
An extra capacity steam iron as defined by claim 2 in which said first steam generating means includes a soleplate boiler chamber, said soleplate boiler chambers of said first and second steam generating means being located on opposite sides of said heating element.
Claim 8
Dependent Claim
66 words
An extra capacity steam iron as defined by claim 6 in which said heating element is imbedded within said soleplate and in which said heating element is generally U-shaped with the open end of the U facing the rear of the soleplate, said soleplate boiler chamber of said second steam generating means being located forward of said heating element in the nose portion of said soleplate.
Claim 9
Dependent Claim
20 words
An extra capacity steam iron as defined by claim 7 in which said circuitous passage means crosses said heating element.
Claim 10
Dependent Claim
24 words
An extra capacity steam iron as defined by claim 2 in which said second steam generating means is located within said primary plenum means.
Claim 11
Dependent Claim
115 words
An extra capacity steam iron as defined by claim 2 in which said soleplate has a substantially greater number of primary ports communicating with said primary plenum means than secondary ports communicating with said secondary plenum means and in which said supply means is adopted to selectively supply water to said first steam generating means at a substantially continuous metered rate and to selectively supply water to said second steam generating means for brief intervals of time at a momentary rate substantially greater than the metered rate to said first steam generating means such that steam discharged through said secondary ports has much greater velocity and penetrating power than steam discharged through said primary ports.
Claim 12
Dependent Claim
50 words
An extra capacity steam iron as defined by claim 10 in which said first steam generating means includes a soleplate boiler chamber for receiving water from said supply means, said soleplate boiler chambers of said first and second steam generating means being located on opposite sides of said heating element.
Claim 13
Dependent Claim
55 words
An extra capacity steam iron as defined by claim 11 in which said heating element is generally U-shaped with the open end of the U facing the rear of the soleplate, said soleplate boiler chamber of said second steam generating means being located forward of said heating element in the nose portion of said soleplate.
Claim 14
Dependent Claim
20 words
An extra capacity steam iron as defined by claim 12 in which said circuitous passage means crosses said heating element.
Claim 15
Dependent Claim
43 words
An extra capacity steam iron as defined by claim 13 in which said primary plenum means is disposed symmetrically with respect to the longitudinal centerline of said soleplate and in which said second steam generating means is located within said primary plenum means.
Claim 16
Dependent Claim
58 words
An extra capacity steam iron as defined by claim 14 in which said secondary plenum means comprises a pair of plenums disposed symmetrically with respect to the longitudinal centerline of said soleplate and at least one secondary port communicates with each of said plenums, said circuitous passage means being disposed symmetrically about the longitudinal centerline of said soleplate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-17 | 1979-05-19 | 1979-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-17 | 1983-05-19 | 1983-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-17 | 1987-05-19 | 1987-11-18 | $7700.00 | Window Closed / Lapsed |