Motorized control unit with torsional elastomeric bias

Details Motorized control unit with torsional elastomeric bias Motorized control unit with torsional elastomeric bias

1988-03-21

1989-01-24

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

74411, 185 40R, 25112911, 310 41, 310 91, H02K 710, F16K 3104, F16H 5712

Patent

active

048003085

ABSTRACT:
A motorized control for driving a rotatable shaft-actuated device, such as a valve, comprising a base plate, a top housing, a work plate intermediate the base plate and the top housing and a plurality of stiff legs extending between the base plate and the housing, wherein drive motors are mounted on the work plate to drive a drive shaft that is attached to the shaft-actuated device. The improvement provides elastomeric bias means that remain at rest during normal operation of the control, and deform, to store energy, at the end of control travel, to be released at the begining of travel in the opposite direction, to aid the controller to break loose any binding in the valve.

REFERENCES:
patent: 741995 (1903-10-01), Baldwin et al.
patent: 2994794 (1961-08-01), Jordan
patent: 3042357 (1962-07-01), Engholdt
patent: 3434025 (1969-03-01), Parkinson et al.
patent: 4203573 (1980-05-01), Boss
patent: 4503719 (1985-03-01), Hamano
patent: 4621789 (1986-11-01), Fukamachi
patent: 4652781 (1987-03-01), Andrei-Alexandru et al.
patent: 4748865 (1988-06-01), Umezawa et al.

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