Disabler and activation system for plumbing fixture

• US 4,891,864 A
• Filed: 11/08/1988
• Issued: 01/09/1990
• Est. Priority Date: 09/30/1985
• Status: Expired due to Fees

• Current Assignee: Coyne & Delany Co.
• Original Assignee: Coyne & Delany Co.
• Inventors: Laverty, Martin J. Jr.
• Primary Examiner(s): Watkins, Donald
• Application Number:
  US07/268,483
• Time in Patent Office: 427 Days
• Field of Search: 4/DIG. 3, 4/DIG. 15, 4/302, 4/415, 4/427, 137/398, 137/624.12, 137/624.14, 91/399, 91/418, 251/39, 251/40, 251/75, 251/95
• US Class Current: 91/399
• CPC Class Codes: E03D 11/00 Other component parts of water-closets pipe-joints or couplings in general F16L , e.g. noise-reducing means in the flushing system noise-reducing means in combination with flushing valves E03D9/14, flushing pipes mounted in the bowl, seals for the bowl outlet, devices preventing overflow of the bowl contents; devices forming a water seal in the bowl after flushing, devices eliminating obstructions in the bowl outlet or preventing backflow of water and excrements from the waterpipe
• CPC Class Codes: E03D 3/02 Self-closing flushing valves self-closing valves in general F16K21/04
• CPC Class Codes: Y10T 137/86397 With independent valve controller

Abstract

A flush valve operating means having a housing with a sleeve assembly therein and a piston actuating means within the sleeve, the housing having two fluid inlets and the sleeve having a by-pass means for diverting fluid from one side of the piston to the other to provide equal fluid pressure over the face of the piston and the piston being slidable within the sleeve in response to fluid supply line pressure being applied to one face of the piston to actuate the flush valve.

Claims

1. In a hydraulic flush valve operating arrangement for use with a fixture having an actuating assembly including:

a housing having two fluid inlets;

a sleeve assembly in said housing;

a piston having a solid face slidable within said sleeve; and

fluid by-pass means in said sleeve assembly for diverting hydraulic fluid from one side of said piston to the other;

said piston being slidable within said sleeve assembly in response to fluid supply line pressure being supplied to said solid face with substantially equal fluid pressure in each said tubes for actuating said flush valve; and

said by-pass means cooperating with said piston and an outlet of said flush valve to a fixture to permit drainage of fluid from said housing into the fixture through said outlet of said flush valve, thereby providing uniform pressure over the face of said piston.

2. In the flush valve operating arrangement of claim 1,

said by-pass means includes a longitudinal channel in said sleeve assembly coaxial with and concentrically spaced from the central axis of said housing;

said sleeve assembly includes a transverse opening from a first side of the piston remote from the outlet into said longitudinal channel; and

said piston includes an outer plate having a foreshortened diametrical extent to provide access to said transverse opening for all positions of said piston.

3. In the flush valve operating arrangement according to claim 1, including:

a piston rod coupled with one of the solid faces of said piston for actuating said flush valve, and wherein said piston includes;

a center member to provide for a fluid-tight fluid fit between said piston and the inner wall of said sleeve in contact with said piston; and

a foreshortened face member on one side of said piston to permit fluid to flow into a portion formed by said foreshortened portion and the inner wall of said sleeve for direction of the fluid to the outer wall of said sleeve and diverting the fluid to the other side of said piston.

4. In the flush valve operating arrangement according to claim 2, including:

a piston rod coupled with one of the solid faces of said piston for actuating said flush valve, and wherein said piston includes;

a center member to provide for a fluid-tight fluid fit between the inner wall of said sleeve in contact therewith and said piston; and

a foreshortened face member on one side of said piston to permit fluid to flow into a portion formed by said foreshortened portion and the inner wall of said sleeve for direction of the fluid to the outer wall of said sleeve and diverting the fluid to the other side of said piston.

5. In the hydraulic flush valve of claim 1, including:

a washerless sleeve assembly bearing coupled with said housing for guiding a plunger coupled with the other face of said piston, and said washerless sleeve assembly bearing together with said sleeve assembly guiding said piston.

6. In the hydraulic flush valve of claim 2, including:

a washerless sleeve assembly bearing coupled with said housing for guiding a plunger coupled with the other face of said piston, and said washerless sleeve assembly bearing together with said sleeve assembly cooperating for guiding said piston.

7. In the hydraulic flush valve of claim 5, including:

a spring positioned between said other face of said piston and said washerless sleeve assembly bearing for maintaining the plunger out of engagement with the stem of the valve.

8. In the hydraulic flush valve of claim 6, including:

a spring positioned between said other face of said piston and said washerless sleeve assembly bearing for maintaining the plunger out of engagement with the stem of the valve.

9. In the hydraulic flush valve of claim 5, including:

an end wall coupled with said washerless sleeve assembly bearing to permit said plunger to pass out of said housing.

10. In the hydraulic flush valve of claim 5, including:

a spring positioned between said facing plate and said sleeve assembly bearing wall.

11. In an hydraulic flush valve operating arrangement for use with a fixture having an actuating assembly including:

a housing having two liquid inlets;

a sleeve in said housing;

a piston having a solid face slidable within said sleeve; and

hydraulic by-pass means for diverting hydraulic liquid from one side of said piston to the other;

said piston being slidable within said sleeve in response to hydraulic supply line pressure being supplied to said solid face with substantially equal hydraulic pressure in each said tubes for actuating said flush valve; and

said hydraulic by-pass means cooperating with said piston and an outlet of said flush valve to a fixture to permit drainage of hydraulic liquid from said housing into the fixture through said outlet of said flush valve, thereby providing uniform pressure over the face of said piston.

12. In the flush valve operating arrangement of claim 11,

said by-pass means including a longitudinal channel in said sleeve coaxial with and concentrically spaced from the central axis of said housing;

an opening in said sleeve extending transversely to said central axis from a first side of the piston remote from the outlet into said longitudinal channel; and

said piston including an outer plate having a foreshortened diametrical extent to provide access to said transverse opening for all positions of said piston.

13. In the flush valve operating arrangement according to claim 11, including:

a piston rod coupled with one of the solid faces of said piston for actuating said flush valve;

said piston including;

a center member to provide for a fluid-tight hydraulic fit between said piston and the inner wall of said sleeve in contact with said piston; and

a foreshortened face member on one side of said piston to permit hydraulic liquid to flow into a portion formed by said foreshortened portion and the inner wall of said sleeve for direction of the hydraulic liquid to the outer wall of said sleeve and diverting the hydraulic liquid to the other side of said piston.

14. In the flush valve operating arrangement according to claim 12, including:

a piston rod coupled with one of the solid faces of said piston for actuating said flush valve, and wherein said piston includes;

a center member to provide for a fluid-tight hydraulic fit between the said piston and the inner wall of said sleeve in contact therewith and said piston; and

a foreshortened face member on one side of said piston to permit hydraulic liquid to flow into a portion formed by said foreshortened portion and the inner wall of said sleeve for direction of the hydraulic liquid to the outer wall of said sleeve and diverting the hydraulic liquid to the other side of said piston.

15. In the hydraulic flush valve of claim 11, including:

a washerless sleeve bearing coupled with said housing for guiding a plunger coupled with the other face of said piston, and said washerless sleeve bearing together with said sleeve guiding said piston.

16. In the hydraulic flush valve of claim 12, including:

a washerless sleeve bearing coupled with said housing, extending into said sleeve coaxial with and centrally spaced from the central axis for guiding a plunger coupled with the other face of said piston, and said washerless sleeve bearing together with said sleeve cooperating for guiding said piston.

17. In the hydraulic flush valve of claim 15, including:

a spring positioned between said other face of said piston and said washerless sleeve bearing for maintaining the plunger out of engagement with the stem of the valve.

18. In the hydraulic flush valve of claim 16, including:

a spring positioned between said other face of said piston and said washerless sleeve bearing for maintaining the plunger out of engagement with the stem of the valve.

19. In the hydraulic flush valve of claim 15, including:

an end wall coupled with said washerless sleeve bearing to permit said plunger to pass out of said housing.

20. In the hydraulic flush valve of claim 15, including:

a spring positioned between said facing plate and said sleeve bearing wall.