US3722117A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam nozzle iron
Assignee: General Electric Co
•
Filing: 1972-05-15
•
Granted: 1973-03-27
•
Expires: 1992-05-15
Abstract
Abstract The invention discloses a flash boiler steam iron having separate primary and secondary steam chambers formed by the soleplate and coverplate of the iron and using steam valve means between the chambers wherein the valve means is selectively movable to control steam flow sequentially through the primary and secondary chambers in one position and solely through the primary chamber in another position. The iron has nozzle means thermally connected to the soleplate and directed forwardly and downwardly toward the fabric whereupon steam is controlled by the valve structure to pass through the soleplate or to discharge a curtain of visible steam ahead of and around the nose of the iron.
Inventors
- 👤 W Davidson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:00
CPC Classifications
D; D06; D06F; D06F75/00; D06F75/08; D06F75/10; D06F75/14; D06F75/18; D06F75/20
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
146 words
A steam iron having a heated soleplate with a flash steam generator formed therein and a water tank within the iron, an onoff water valve connected to start and stop a metered flow of water from said tank through an orifice into said generator, a coverplate overlying a portion of said soleplate and defining a primary steam chamber therewith, steam discharge ports through said soleplate and connected to said primary chamber, means including said coverplate and soleplate defining a separate secondary steam chamber, steam valve means between said chambers and selectively movable to control steam flow sequentIally through said primary and secondary chambers in one position and solely through said primary chamber in another position, nozzle means on said iron thermally connected to said soleplate and coverplate and directed forwardly and downwardly toward the fabric being ironed, and means connecting said nozzle and secondary steam chamber.
Claim 2
Dependent Claim
146 words
A steam iron having a heated soleplate with a flash steam generator formed therein and a water tank within the iron, an onoff water valve connected to start and stop a metered flow of water from said tank through an orifice into said generator, a coverplate overlying a portion of said soleplate and defining a primary steam chamber therewith, steam discharge ports through said soleplate and connected to said primary chamber, means including said coverplate and soleplate defining a separate secondary steam chamber, steam valve means between said chambers and selectively movable to control steam flow sequentIally through said primary and secondary chambers in one position and solely through said primary chamber in another position, nozzle means on said iron thermally connected to said soleplate and coverplate and directed forwardly and downwardly toward the fabric being ironed, and means connecting said nozzle and secondary steam chamber.
Claim 3
Dependent Claim
15 words
Apparatus as described in claim 1 wherein the iron is a balanced pressure steam iron.
Claim 4
Dependent Claim
33 words
Apparatus as described in claim 2 wherein said secondary chamber is disposed forward of said primary chamber, and said coverplate extends forward of said secondary chamber to form said nozzle with the soleplate.
Claim 5
Dependent Claim
38 words
Apparatus as described in claim 2 wherein said steam valve means is connected to actuating means on said handle, and means normally biasing said steam valve means into said other position for steam flow through said primary chamber.
Claim 6
Dependent Claim
35 words
Apparatus as described in claim 2 wherein said water tank has means closing it to ambient pressure when the iron is steaming and having a balance tube connecting the steam generator and the tank interior.
Claim 7
Dependent Claim
29 words
Apparatus as described in claim 2 wherein said steam generator is part of said primary steam chamber and said secondary chamber is separate and fed from said primary chamber.
Claim 8
Dependent Claim
35 words
Apparatus as described in claim 3 wherein said nozzle is formed contiguous with the nose of said iron to discharge a curtain of steam around the nose when said valve is in said one position.
Claim 9
Dependent Claim
29 words
Apparatus as described in claim 5 wherein said steam generator is part of said primary steam chamber and said secondary chamber is separate and fed from said primary chamber.
Claim 10
Dependent Claim
44 words
Apparatus as described in claim 7 wherein said steam valve means is connected to actuating means on said handle operable separately from said water valve, and spring means biasing said steam valve means into said other position for steam flow through said primary chamber.
Claim 11
Dependent Claim
44 words
Apparatus as described in claim 8 wherein said steam valve means is connected to actuating means on said handle operable separately from said water valve, and spring means biasing said steam valve means into said other position for steam flow through said primary chamber.
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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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |