US3763888A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aspirating valve
Assignee: Individual
•
Filing: 1972-04-26
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Granted: 1973-10-09
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Expires: 1992-04-26
Abstract
Abstract A valve body with a water passageway having a Venturi portion is interposed in a water line, adjacent a shower head, for example. Fluids, such as shampoos, liquid soaps, detergents, bath oils, and the like, are introduced into the water stream at the Venturi throat, a fluid flow channel in the valve body extending to the throat from a fluid supply reservoir removably connected to the valve body. Interposed in the fluid flow path is a hollow actuator rod translatable in a cross bore formed in the valve body. In ''''ON'''' position, an annular groove in the rod periphery is in register with the adjacent channel ports to permit fluid to flow from the reservoir into the water stream. In ''''OFF'''' position, an annular slot in the rod periphery is in register with the adjacent channel ports, the suction being broken, however, by openings connecting the annular slot with a central hollow bore in the actuator rod open to the atmosphere. For institutional applications, the duration of the ''''ON'''' period is timed, and the valve is automatically closed at the end of a predetermined period.
Inventors
- 👤 W Duecker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:59
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/02; E03C1/04; E03C1/046; A; A47; A47L; A47L17/00; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87571; Y10T137/87587; Y10T137/87595; Y10T137/87619; Y10T137/87627
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
320 words
An aspirating valve comprising: a. a valve body having formed therein a fore and aft passageway extending from an upstream water supply port to a downstream discharge port, said passageway including a Venturi portion; said valve body also having formed therein a transverse bore adjacent said passageway, and a channel having a first run extending between said Venturi portion of said passageway and a first opening in the walls of said bore and a second run extending between a second opening in the walls of said bore and a fluid supply orifice; and, b. an actuator rod translatably disposed in said transverse bore, said rod being movable between 1. an ''''on'''' position wherein said first opening and said second opening in the walls of said bore and interconnected by an uninterrupted cavity comprising a peripheral groove formed in said rod to afford a sub-atmospheric pressure in said channel capable of aspirating fluid from a fluid supply reservoir connected to said orifice, said first opening and said second opening being in facing relation on opposite walls of said bore and in register with said groove in said ''''on'''' position of said actuator rod to conduct fluid passing from said orifice through said second run of said channel thence through said peripheral groove in said rod and through said first run of said channel and discharging into said Venturi portion to merge with water flowing through said passageway, and 2. an ''''off'''' position wherein said first opening and said second opening are interconnected by a conduit comprising a peripheral slot formed in said rod axially removed a predetermined distance from said peripheral groove, said peripheral slot being interrupted by an aperture comprising an axial hole bored through said rod and connected to said peripheral slot through a recess, atmospheric air being thereby capable of passing into said slot and effective to break the aspirating effect of said Venturi on said fluid supply.
Claim 2
Dependent Claim
320 words
An aspirating valve comprising: a. a valve body having formed therein a fore and aft passageway extending from an upstream water supply port to a downstream discharge port, said passageway including a Venturi portion; said valve body also having formed therein a transverse bore adjacent said passageway, and a channel having a first run extending between said Venturi portion of said passageway and a first opening in the walls of said bore and a second run extending between a second opening in the walls of said bore and a fluid supply orifice; and, b. an actuator rod translatably disposed in said transverse bore, said rod being movable between 1. an ''''on'''' position wherein said first opening and said second opening in the walls of said bore and interconnected by an uninterrupted cavity comprising a peripheral groove formed in said rod to afford a sub-atmospheric pressure in said channel capable of aspirating fluid from a fluid supply reservoir connected to said orifice, said first opening and said second opening being in facing relation on opposite walls of said bore and in register with said groove in said ''''on'''' position of said actuator rod to conduct fluid passing from said orifice through said second run of said channel thence through said peripheral groove in said rod and through said first run of said channel and discharging into said Venturi portion to merge with water flowing through said passageway, and 2. an ''''off'''' position wherein said first opening and said second opening are interconnected by a conduit comprising a peripheral slot formed in said rod axially removed a predetermined distance from said peripheral groove, said peripheral slot being interrupted by an aperture comprising an axial hole bored through said rod and connected to said peripheral slot through a recess, atmospheric air being thereby capable of passing into said slot and effective to break the aspirating effect of said Venturi on said fluid supply.
Claim 3
Dependent Claim
82 words
an ''''off'''' position wherein said first opening and said second opening are interconnected by a conduit comprising a peripheral slot formed in said rod axially removed a predetermined distance from said peripheral groove, said peripheral slot being interrupted by an aperture comprising an axial hole bored through said rod and connected to said peripheral slot through a recess, atmospheric air being thereby capable of passing into said slot and effective to break the aspirating effect of said Venturi on said fluid supply.
Claim 4
Dependent Claim
82 words
an ''''off'''' position wherein said first opening and said second opening are interconnected by a conduit comprising a peripheral slot formed in said rod axially removed a predetermined distance from said peripheral groove, said peripheral slot being interrupted by an aperture comprising an axial hole bored through said rod and connected to said peripheral slot through a recess, atmospheric air being thereby capable of passing into said slot and effective to break the aspirating effect of said Venturi on said fluid supply.
Claim 5
Dependent Claim
88 words
An aspirating valve as in claim 1 including a pair of limit stops on the ends of said rod separated by a distance greater than the length of said transverse bore by an amount substantially equal to said predetermined amount of axial separation between said slot and said groove, and said transverse bore extends between opposite sides of said valve body, said limit stops being capable of defining the extent of to and fro axial movement of said actuator rod between said ''''on'''' position and said ''''off'''' position.
Claim 6
Dependent Claim
33 words
An aspirating valve as in claim 2 wherein said upstream port of said passageway is interiorly threaded and said discharge port is formed in an exteriorly threaded nipple projecting from said valve body.
Claim 7
Dependent Claim
24 words
An aspirating valve as in claim 3 wherein said orifice is encompassed by a threaded fitting capable of engaging a removable fluid supply reservoir.
Claim 8
Dependent Claim
44 words
An aspirating valve as in claim 4 further including a tubing connected to said orifice and extending below the fluid surface in said supply reservoir, and an air supply vent in said valve body connecting the space above said fluid surface to the atmosphere.
Claim 9
Dependent Claim
34 words
An aspirating valVe as in claim 5 including spring-biased and metered-orifice timer means on said valve for moving said rod from ''''on'''' position to ''''off'''' position after a predetermined dwell time in ''''on'''' position.
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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |