Valve operator

Details Valve operator Valve operator

1994-03-07

1995-01-17

Chambers, A. Michael

Valves and valve actuation

Fluid actuated or retarded

Rotary or oscillatory motor

25112912, 25112913, 251248, 137554, F16K 3112

Patent

active

053819969

ABSTRACT:
A valve operating machine has a reversable motor and a drive assembly for turning the stem of a valve, and a sensor for determining the torque applied to the valve stem. The amount of torque applied to the valve stem is regulated so as not to exceed the torque limits of the valve. The machine will gradually apply greater amounts of torque in opposite directions until the valve has become unfrozen. Thereafter, the valve will be rotated until the opening or closing cycle has been completed. When an increase in torque is detected, the machine will reverse to unjam a valve, and where such reversal does not result in further forward movement, the machine will terminate the cycle.

REFERENCES:
patent: 3704853 (1972-12-01), Waller
patent: 4621789 (1986-11-01), Fukamachi
patent: 4687179 (1987-08-01), Smith
patent: 4757684 (1988-07-01), Wright
patent: 5101862 (1992-04-01), Leete
patent: 5137257 (1992-08-01), Tice

Affiliated with

Also associated with

Rating

Valve operator does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-743082