Modified push-pull valve for filter systems and method

Details Modified push-pull valve for filter systems and method Modified push-pull valve for filter systems and method

2007-08-28

2007-08-28

Fox, John (Department: 3753)

Fluid handling

Systems

Multi-way valve unit

C137S269000, C210S425000

Reexamination Certificate

active

11265454

ABSTRACT:
A valve assembly is constructed for use in a filtering system including a pump and a filter with an inlet and an outlet, for example those systems used in conjunction with swimming pools. The assembly includes a valve body with a pump inlet, a filtered output, a waste-water disposal outlet, a filter inlet, and a filter outlet. Pairs of a plurality of plunger heads are positioned within the valve body to provide a plurality of modes of operation, the pairs of plunger heads being positioned within the valve body in one of a filtering mode, a backwash mode, and a direct mode in which flow from the pump is directly into the waste-water disposal outlet. The pairs can be affixed on two different interchangeable plungers or moveably positioned on a single plunger.

REFERENCES:
patent: 2553458 (1951-05-01), Jordan
patent: 3195726 (1965-07-01), Saurenman et al.
patent: 3365064 (1968-01-01), Horan, Jr.
patent: 3643692 (1972-02-01), Traylor
patent: 3683961 (1972-08-01), Launay et al.
patent: 3779280 (1973-12-01), Evans et al.
patent: 4055500 (1977-10-01), Parker
patent: 4250920 (1981-02-01), Traylor
patent: 4466457 (1984-08-01), Brane et al.
patent: 4469131 (1984-09-01), Traylor
patent: 4714551 (1987-12-01), Bachhofer et al.
patent: 6575195 (2003-06-01), Wichmann
patent: 6578605 (2003-06-01), Cooper et al.

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