Pilot controlled pulse valve

Details Pilot controlled pulse valve Pilot controlled pulse valve

2006-08-11

2009-12-29

Rivell, John (Department: 3753)

Fluid handling

Systems

Multi-way valve unit

C137S625660, C251S031000, C251S065000

Reexamination Certificate

active

07637281

ABSTRACT:
A pilot controlled pulse valve has a valve spool releasably held in both terminal positions by a latching device. The latching device comprise a permanent magnet holding the valve spool by magnetic force. To set the terminal or end position the permanent magnet has an abutment placed to the fore of it. In order to protect the permanent magnet against damage the abutment bears against the valve housing independently of the permanent magnet.

REFERENCES:
patent: 2967545 (1961-01-01), Schmidt
patent: 3203439 (1965-08-01), Beckett
patent: 3304126 (1967-02-01), Rupp et al.
patent: 3326236 (1967-06-01), Beckett et al.
patent: 3465686 (1969-09-01), Nugier
patent: 3592230 (1971-07-01), Piroutek
patent: 3794075 (1974-02-01), Stoll et al.
patent: 3847371 (1974-11-01), Norton et al.
patent: 3881505 (1975-05-01), Dunkelis
patent: 4203571 (1980-05-01), Ruchser
patent: 4310143 (1982-01-01), Determan
patent: 5174731 (1992-12-01), Korver
patent: 5377719 (1995-01-01), Gyllinder et al.
patent: 5666994 (1997-09-01), Stoll et al.
patent: 24 22 593 (1975-11-01), None
patent: 196 36781 (1998-03-01), None
patent: 0 650 002 (1997-06-01), None
“Bauelmenter der Pneumatik,” published by Otto Krausskopf Verlag GmbH, Mainz, 1972, pp. 259-261.

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