Patent US2886757A successfully refreshed from Google Patents.
US3853784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow control device
Assignee: Individual
•
Filing: 1974-04-30
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Granted: 1974-12-10
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Expires: 1994-04-30
Abstract
Abstract Foam forming apparatus consisting of a handle having a water supply line connected thereto and having an expanded venturi passageway leading to an outlet chamber. The conduit has an inlet check valve for detergent at the narrow end of the venturi passage, which provides suction for drawing detergent into the incoming stream of water. A source of compressed air is connected through a fitting to the outlet chamber where the air is mixed with the water and detergent and generates foam. A booster pump may be employed in the assembly ahead of the air inlet fitting.
Inventors
- 👤 E Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:04
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/24; B05B7/26; B05B7/28; B05B7/30; B01; B01F; B01F25/00; B01F25/30; B01F25/31; B01F25/311; B01F25/3111; B01F25/31112; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87571; Y10T137/87587; Y10T137/87595
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
149 words
A FLUID FLOW-CONTROL DEVICE COMPRISING A CONDUIT MEMBER HAVING AN INLET AND AN OUTLES END, MEANS TO CONNECT SAID INLET END TO A MAIN LIQUID SUPPLY SOURCE, SAID INLET END HAVING A LIQUID RECEIVING CAVITY, SAID CONDUIT MEMBER BEING FORMED WITH AXIAL PASSAGE MEANS EXTENDING FROM SAID LIQUID-RECEIVING CAVITY TOWARD SAID OUTLET END, MEANS IN SAID INLET END DEFINING A RELTATIVELY SMALL DIAMETER, AXIAL, FIRST VENTURI PASSAGE FLARING A RELATIVELY SMALL DIAMETER, AXIAL, FIRST VENTURI PASSAGE FLARING FORMED WITH A RELATIVELY WIDE-FLARE PASSAGE MRGERGING WITH SAID AXIAL PASSAGE MEANS AT SAID OUTLET END OF THE CONDUIT MEMBER, AND FLOW-REGULATTING MEANS LOCATED IN SAID PASSAGE MEANS AND IN SAID FIRST VENTURI PASSAGE, COMPRISING A FREE-FLOATING STEM MEMBER PROVIDED WITH OPPOSITTE ENLARGED END PORTIONS, ONE ENLARGED END PORTION BEING LOCATED WITHIN THE INLET END OF SAID FIRST VENTURI PASSAGE, AND THE OTHER ENLARGED END PORTION BEING LOCATED WITHIN SAID WIDEFLARE PASSAGE.
Claim 2
Dependent Claim
149 words
A FLUID FLOW-CONTROL DEVICE COMPRISING A CONDUIT MEMBER HAVING AN INLET AND AN OUTLES END, MEANS TO CONNECT SAID INLET END TO A MAIN LIQUID SUPPLY SOURCE, SAID INLET END HAVING A LIQUID RECEIVING CAVITY, SAID CONDUIT MEMBER BEING FORMED WITH AXIAL PASSAGE MEANS EXTENDING FROM SAID LIQUID-RECEIVING CAVITY TOWARD SAID OUTLET END, MEANS IN SAID INLET END DEFINING A RELTATIVELY SMALL DIAMETER, AXIAL, FIRST VENTURI PASSAGE FLARING A RELATIVELY SMALL DIAMETER, AXIAL, FIRST VENTURI PASSAGE FLARING FORMED WITH A RELATIVELY WIDE-FLARE PASSAGE MRGERGING WITH SAID AXIAL PASSAGE MEANS AT SAID OUTLET END OF THE CONDUIT MEMBER, AND FLOW-REGULATTING MEANS LOCATED IN SAID PASSAGE MEANS AND IN SAID FIRST VENTURI PASSAGE, COMPRISING A FREE-FLOATING STEM MEMBER PROVIDED WITH OPPOSITTE ENLARGED END PORTIONS, ONE ENLARGED END PORTION BEING LOCATED WITHIN THE INLET END OF SAID FIRST VENTURI PASSAGE, AND THE OTHER ENLARGED END PORTION BEING LOCATED WITHIN SAID WIDEFLARE PASSAGE.
Claim 3
Dependent Claim
30 words
The flow-control device of claim 1, and means to connect a source of injection fluid to said liquid-receiving cavity, whereby the device may be employed as a fluid injection means.
Claim 4
Dependent Claim
28 words
The flow-control device of claim 1, and a check valve located between the inlet end of the conduit member and the inlet end Of said first venturi passage.
Claim 5
Dependent Claim
38 words
The flow-control device of claim 3, and a spider member mounted between said check valve and said one enlarged end portion, said spider member having a central depressed portion in which said one enlarged end portion is receivable.
Claim 6
Dependent Claim
39 words
The flow-control device of claim 4, and wherein said spider member is hollow and has an inlet aperture adjacent its periphery, said spider member and one enlarged portion defining a clearance space therebetween open to said liquid receiving cavity.
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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) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |