Motor-operated valve

Details Motor-operated valve Motor-operated valve

2006-05-01

2009-02-24

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

Valves and valve actuation

Electrically actuated valve

Rotary electric actuator

C251S265000

Reexamination Certificate

active

07494108

ABSTRACT:
A motor-operated valve has a rotor unit in a can, and is rotationally driven by a stator unit. The rotation of the rotor unit is transmitted to a screw feed member. A stem member fixed to a valve body is engaged threadedly with the screw feed member by a first screw portion. At the same time, the screw feed member is engaged threadedly with an external thread portion fixed to a valve stem by the second screw portion. The first screw portion and the second screw portion constitute a differential screw mechanism, and feeds the valve stem according to a difference in pitch.

REFERENCES:
patent: 2388989 (1945-11-01), Mueser
patent: 3409271 (1968-11-01), Kallenbach
patent: 5318064 (1994-06-01), Reinicke
patent: 5419530 (1995-05-01), Kumar
patent: 5851003 (1998-12-01), Aoki et al.
patent: 7165755 (2007-01-01), Umezawa et al.
patent: 0361539 (1986-11-01), None
patent: 0645569 (1994-08-01), None
patent: 1087158 (2001-03-01), None
patent: 2001-050415 (2001-02-01), None
patent: 2001-280535 (2001-10-01), None
patent: 02/23032 (2002-03-01), None

Affiliated with

Also associated with

Rating

Motor-operated valve does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Motor-operated valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Motor-operated valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4127565