Valve element opening/closing device

Details Valve element opening/closing device Valve element opening/closing device

2011-04-05

2011-04-05

Fristoe, Jr., John K (Department: 3753)

Valves and valve actuation

Electrically actuated valve

Rotary electric actuator

C251S251000, C251S263000, C137S606000

Reexamination Certificate

active

07918436

ABSTRACT:
A valve element opening/closing device may include a main body, an inflow pipe, an outflow pipe, a valve element, and a drive part for driving the valve element to open and close a flow passage. The drive part may include a linearly moving mechanism part for driving the valve element, which may include a rotary power transmission member, a linearly moving member for moving the valve element, a turning prevention mechanism, and an urging member for urging the valve element in a closing direction. The turning prevention mechanism may include a shaft turnably supporting the rotary power transmission member, and a shaft hole formed in the linearly moving member that is supported by the shaft, and the shaft is engaged with the shaft hole to prevent turning of the linearly moving member.

REFERENCES:
patent: 4357957 (1982-11-01), Bisonaya et al.
patent: 4436280 (1984-03-01), Geisow
patent: 5067359 (1991-11-01), Flaig et al.
patent: 6007047 (1999-12-01), Phipps
patent: 6534793 (2003-03-01), Heritier-Best
patent: 6769665 (2004-08-01), Silva et al.
patent: 6918408 (2005-07-01), Hara
patent: 7284571 (2007-10-01), Ozawa et al.
patent: 7475704 (2009-01-01), Hara et al.
patent: 2000-346225 (2000-12-01), None

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