Patent US3580542A successfully refreshed from Google Patents.
US3580542A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pushbutton valve
Assignee: Haws Drinking Faucet Co
•
Filing: 1969-09-05
•
Granted: 1971-05-25
•
Expires: 1989-09-05
Abstract
Abstract A pushbutton valve of the type used in drinking fountains to control the flow of water to the discharge nozzle thereof. The moveable control component of the valve assembly is isolated from unbalanced pressure forces and is therefore displaceable between the open and closed positions thereof with substantially the same manual force irrespective of the pressure of the water supply delivered to the fountain. The valve assembly includes a casing defining a cylinder having inlet and outlet passages and communicating therewith intermediate its ends and at laterally spaced locations. A control piston reciprocable within the cylinder is moveable between open and closed positions and is spring biased toward the closed position thereof. The piston has a valve chamber intermediate its ends within which is located a valve structure providing a pressurizable chamber and inlet and outlet ports opening thereinto and communicable with the inlet and outlet passages of the assembly when the control piston is in its open position. The valve structure is comprised of a plurality of individual components, and water pressure within the pressurizable chamber biases the valve components into slidably sealing engagement with the walls of the cylinder.
Inventors
- 👤 Allen C Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:30
CPC Classifications
F; F16; F16K; F16K3/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
166 words
A pushbutton valve assembly for a drinking fountain or the like, comprising a valve casing defining an axially extending cylinder and being provided with inlet and outlet passages communicating with said cylinder at laterally spaced locations intermediate the ends thereof, a piston reciprocable within said cylinder between open and closed positions and being provided with a valve chamber oriented so as to extend generally between said passages, valve structure carried by said piston within said valve chamber and providing a pressurizable chamber having inlet and outlet ports respectively communicable with said inlet and outlet passages in the open position of said piston so as to establish flow connection between said passages, and means biasing said piston toward the closed position thereof, the only appreciable fluid pressure in active application to said piston being substantially confined within said pressurizable chamber with the result that there are no significant pressure forces operative between said piston and casing tending either to implement or inhibit axial displacements of said piston.
Claim 2
Dependent Claim
166 words
A pushbutton valve assembly for a drinking fountain or the like, comprising a valve casing defining an axially extending cylinder and being provided with inlet and outlet passages communicating with said cylinder at laterally spaced locations intermediate the ends thereof, a piston reciprocable within said cylinder between open and closed positions and being provided with a valve chamber oriented so as to extend generally between said passages, valve structure carried by said piston within said valve chamber and providing a pressurizable chamber having inlet and outlet ports respectively communicable with said inlet and outlet passages in the open position of said piston so as to establish flow connection between said passages, and means biasing said piston toward the closed position thereof, the only appreciable fluid pressure in active application to said piston being substantially confined within said pressurizable chamber with the result that there are no significant pressure forces operative between said piston and casing tending either to implement or inhibit axial displacements of said piston.
Claim 3
Dependent Claim
54 words
The valve assembly of claim 1 in which said valve structure comprises a plurality of individual components one of which is an inlet component and the other an outlet component, and said inlet an outlet components being transversly spaced and biased toward sealing slidable engagement with the respectively adjacent wall surfaces of said cylinder.
Claim 4
Dependent Claim
36 words
The valve assembly of claim 2 in which said inlet and outlet ports are respectively provided by said inlet and outlet components, and said pressurizable chamber is in substantially continuous flow communication with said inlet passage.
Claim 5
Dependent Claim
58 words
The valve assembly of claim 1 in which said cylinder is provided with two transversely spaced substantially planar walls disposed in generally facing parallelism and respectively having said inlet and outlet passages opening therethrough into said cylinder, said valve structure being provided along opposite sides thereof with substantially planar walls slidingly engaging the planar walls of said cylinder.
Claim 6
Dependent Claim
67 words
The valve assembly of claim 4 in which said valve structure comprises a plurality of individual components one of which is an inlet component and the other an outlet component, said inlet and outlet components being transversely spaced and biased toward sealing slidable engagement with the respectively associated planar walls of said cylinder, and said pressurizable chamber being in substantially continuous flow communication with said inlet passage.
Claim 7
Dependent Claim
38 words
The valve assembly of claim 5 in which said valve structure further includes a seal component interposed between said inlet and outlet components, and said inlet and outlet ports being respectively provided by said inlet and outlet components.
Claim 8
Dependent Claim
111 words
The valve assembly of claim 1 in which said casing is provided with a main body part having a pair of axially extending walls spaced apart transversely and providing facing generally planar surfaces comprising wall segments of the aforesaid cylinder, said inlet and outlet passages being respectively associated with said spaced apart walls and communicating with said cylinder therethrough, in which said valve structure is provided along opposite sides thereof with substantially planar walls slidably engaging the planar surfaces of said cylinder, and in which said casing further comprises a cap enclosing said axiallY extending walls and together with the planar surfaces thereof defining the axially extending boundaries of said cylinder.
Claim 9
Dependent Claim
67 words
The valve assembly of claim 7 in which said valve structure comprises a plurality of individual components one of which is an inlet component and the other an outlet component, said inlet and outlet components being transversely spaced and biased toward sealing slidable engagement with the respectively associated planar surfaces of said cylinder, and said pressurizable chamber being in substantially continuous flow communication with said inlet passage.
Claim 10
Dependent Claim
37 words
The valve assembly of claim 8 in which said valve structure further includes a seal component interposed between said inlet and outlet components, said inlet and outlet ports being respectively provided by said inlet and outlet components.
Claim 11
Dependent Claim
55 words
The valve assembly of claim 9 in which said cap is provided with a central opening and said piston is provided with an axial projection extending through said opening so as to have a manual force applied thereto, the cylinder space intermediate the bottom closure of said cylinder and said piston being vented to atmosphere.
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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |