Regulating slide valve

Details Regulating slide valve Regulating slide valve

2005-06-07

2005-06-07

Bastianelli, John (Department: 3751)

Valves and valve actuation

With means to increase head and seat contact pressure

Seat pressed to valve

C251S177000, C251S193000, C251S301000

Reexamination Certificate

active

06902145

ABSTRACT:
Regulating slide valve comprising a valve body having a valve opening, and a valve plate which has two side surfaces and which is displaceable along a displacement path between an initial position in which it releases the valve opening and an end position in which it completely covers the valve opening, this displacement path forming the regulating area of the valve; wherein the valve plate has a contact ring on one side surface, which contact ring projects over the side surface of the valve plate and is mounted at or in the valve plate by a spring device, can be pressed in against the spring force of the spring device in the direction of the valve plate and contacts a contact surface of the valve body at least over a portion of its circumference in the end position of the valve plate.

REFERENCES:
patent: 1287975 (1918-12-01), Haatvedt
patent: 1723264 (1929-08-01), Gemmel
patent: 1991006 (1935-02-01), Wilson
patent: 3047006 (1962-07-01), Transeau
patent: 3145969 (1964-08-01), Von Zweck
patent: 3343562 (1967-09-01), Combes
patent: 3870071 (1975-03-01), Graham et al.
patent: 4285498 (1981-08-01), Nightingale
patent: 5577707 (1996-11-01), Brida
patent: 5868378 (1999-02-01), McMahon et al.
patent: 5873562 (1999-02-01), Marugg

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