Motor controlled throttling poppet valve

Details Motor controlled throttling poppet valve Motor controlled throttling poppet valve

1992-06-12

1994-06-07

Chambers, A. Michael

Valves and valve actuation

Electrically actuated valve

Rotary electric actuator

25112911, 2513353, 251186, F16K 3102

Patent

active

053182723

ABSTRACT:
A motor controlled poppet valve is provided of the type including a valve body, a valve seat mounted at one end of the valve body, and a valve element that comprises a threaded shaft having one end engaged to a nut driven by a stepper motor, and a free end reciprocably moveable into a valve opening or a valve closing position, wherein the free end of the shaft assumes a substantially nonvarying distance from the drive nut or the stepper motor when moved into the valve closing position, and a resilient linkage assembly including a constant force spring that interconnects the free end of the shaft with the valve element. The resilient linkage forcibly depresses the valve element into the valve seat when the shaft is moved into the valve closing position with a force that remains substantially constant regardless of variations in the distance between the free end of the shaft and the valve closing position due to thermal expansion and contraction of the valve body. Additionally, the extreme control of the extent to which the valve element is moved toward the valve seat afforded by the combination of the stepper motor and threaded shaft allows the poppet valve to perform not only a gas isolation function, but throttling and soft start functions as well, thereby obviating the need for separate throttling or soft start valves in a vacuum system.

REFERENCES:
patent: 2331503 (1943-10-01), Ray
patent: 4184333 (1980-01-01), Blaha et al.
patent: 4412517 (1983-11-01), Kobashi et al.
patent: 4815699 (1989-03-01), Mueller
patent: 4832311 (1989-05-01), Kimura

Affiliated with

Also associated with

Rating

Motor controlled throttling poppet 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 controlled throttling poppet valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Motor controlled throttling poppet valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-788164