Servomotor

Details Servomotor Servomotor

1975-03-31

1976-12-21

Scott, Samuel

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

744248R, 116124A, F16H 2702

Patent

active

039981088

ABSTRACT:
The servomotor which can be used for a valve uses a worm-type transmission to drive the nut used to move the adjusting spindle. The transmission includes a worm wheel secured to the nut via a ring and a worm gear meshing with the worm wheel and driven off a drive motor. The worm wheel is fixed to the ring and the ring keyed to the nut in a slot so that the nut can move axially of the wheel when the spindle reaches an end position. The pick-off for a position transmitter includes an external thread on the nut which has the same pitch as the nut on the spindle.

REFERENCES:
patent: 565034 (1896-08-01), Rockwell
patent: 1449554 (1923-03-01), Schoonover
patent: 2212572 (1940-08-01), McCarthy et al.
patent: 2317529 (1943-04-01), Hodgson et al.
patent: 2933937 (1960-04-01), Kron et al.
patent: 3593335 (1971-07-01), Wires

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