US3559673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-syphon ballcock valve assembly
Assignee: Individual
•
Filing: 1969-05-28
•
Granted: 1971-02-02
•
Expires: 1989-05-28
Abstract
Abstract A plastic antisyphon, ballcock valve assembly in which an axial water pressure inlet includes an upper valve seat engageable by a shutoff washer operated by a plunger and floatball operated lever which includes an adjusting screw to control the water level in a flush tank or the like, and in which a peripherally sealed diaphragm includes a free inner edge surrounding the valve seat and is urged into sealing relationship with respect to airintroducing apertures when the sealing washer is unseated and water is directed in a circuitous path to an outlet conduit including branch ducts respectively connected to a hush pipe and flush tank stand pipe, and in which an adjustable screw is interposed at the branch ducts to divide the water flow through the hush pipe and stand pipe conduits to balance and substantially diminish sounds emitted as water is discharged therefrom; and in which substantially all of the working components of the antisyphon ballcock valve assembly are immediately adjacent to the upper portion of a flush tank providing ready access for maintenance, replacement and repair and in which an extremely high ''''critical level'''' is provided whereby danger of syphoning is obviated and substantially eliminated, and the flush tank can be maintained at a minimum height.
Inventors
- 👤 Milton Perlman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:26
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/02; E03C1/10; E03C1/108; Y; Y10; Y10T; Y10T137/00; Y10T137/3149; Y10T137/3185; Y10T137/3294; Y10T137/3331; Y10T137/6851; Y10T137/6855; Y10T137/6866
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
219 words
An antisyphon ballcock valve assembly for use in a flush tank or the like from maintaining a predetermined level of water in the tank, comprising; a valve seat member including a lower axial inlet for connection to a water-inlet pipe, said axial inlet including a tubular element having an upper valve seat surrounded by a chamber; a valve body member on said valve seat member, said valve body member including an apertured roof defining the upper portion of said annular chamber and communicating exteriorally of said valve body; a resilient diaphragm element peripherally clamped between said valve seat and valve body members, said diaphragm element having a free inner edge circumposed in space relation about said axial inlet tubular element and sealingly engageable beneath said apertured roof when subject to water pressure therebeneath, said valve body member including a conduit communicating with said chamber and including branch conduits for connection to a depending hush tube and stand pipe inlet tube, means on said conduit for dividing fluid flow into the respective tubes; sealing washer means in said chamber overlying said valve seat; and lever-and-plunger means mounted on said valve body member for actuating said sealing washer in response to a fluid level being controlled for engaging or permitting disengagement of the sealing washer with respect to said valve seat.
Claim 2
Dependent Claim
219 words
An antisyphon ballcock valve assembly for use in a flush tank or the like from maintaining a predetermined level of water in the tank, comprising; a valve seat member including a lower axial inlet for connection to a water-inlet pipe, said axial inlet including a tubular element having an upper valve seat surrounded by a chamber; a valve body member on said valve seat member, said valve body member including an apertured roof defining the upper portion of said annular chamber and communicating exteriorally of said valve body; a resilient diaphragm element peripherally clamped between said valve seat and valve body members, said diaphragm element having a free inner edge circumposed in space relation about said axial inlet tubular element and sealingly engageable beneath said apertured roof when subject to water pressure therebeneath, said valve body member including a conduit communicating with said chamber and including branch conduits for connection to a depending hush tube and stand pipe inlet tube, means on said conduit for dividing fluid flow into the respective tubes; sealing washer means in said chamber overlying said valve seat; and lever-and-plunger means mounted on said valve body member for actuating said sealing washer in response to a fluid level being controlled for engaging or permitting disengagement of the sealing washer with respect to said valve seat.
Claim 3
Dependent Claim
35 words
The structure as claimed in claim 1 in which said annular chamber comprises substantially conical portions of said valve seat and valve body members, said conical portions converging axially away from said flexible diaphragm element.
Claim 4
Dependent Claim
33 words
The structure as claimed in claim 1 in which said valve body member includes a sleeve in projecting axially about and below said valve seat, said sealing washer being disposed in said sleeve.
Claim 5
Dependent Claim
86 words
The structure as claimed in claim 3 in which said lever-and-plunger means comprises a plunger reciprocably restrained in said valve body member for axial movement above said sealing washer and including stem portion projecting axially above said valve body member, a lever element intermediately pivoted on said valve body member and including a lever portion overlying said plunger stem, an adjustable abutment screw extending through said lever portion and engageable with said plunger stem for adjusting the level of fluid in a flush tank being controlled.
Claim 6
Dependent Claim
62 words
The structure as claimed in claim 1 in which said conduit projects radially along the upper surface of said valve body member, a tubular sleeve depending from said conduit, an elongated hush pipe sealingly engaged at its upper end in said sleeve, said hush pipe including a lower terminally tapered end for reducing noise of water being discharged through said hush tube.
Claim 7
Dependent Claim
58 words
The structure as claimed in claim 5 in which said stand pipe inlet tube extends axially from said conduit in substantially intersecting relationship with respect to said hush pipe, a screw adjustably retained in said conduit and extendable transversely with respect to said inlet tube for balancing the flow of liquid into said inlet tube and hush pipe.
Claim 8
Dependent Claim
54 words
The structure as claimed in claim 1 in which a valve cover overlies the upper surface of said valve body member and is retained in space relation thereabove whereby water discharged through the apertures in said valve body member will engage the undersurface of said valve cover before being discharged into a flush tank.
Claim 9
Dependent Claim
26 words
The structure as claimed in claim 1 in which said valve seat member, valve body member, sealing washer and flexible diaphragm are produced from plastic materials.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |