1978-05-11
1980-05-13
Henry, Jon W.
G02B 718
Patent
active
042026032
ABSTRACT:
A back plate carrying a mirror is mounted on a stationary base plate through a universal support to be rotatable and filtable. Two threaded rods are connected to the back plate through couplings that rotate and tilt the back plate. The threaded rods each have ends connected to worm wheels respectively which mesh worms driven by one or two reversible direct current motors. A spring having a single turn at the center is used. The single turn portion is secured to the base plate and the opposite legs are urged against the threaded rods act as nuts so as to move the threaded in the axial direction when they are rotated where two worms are driven by a single reversible direct current motor, the worms disposed on the opposite sides of the motor and selectively connected thereto through clutches which are controlled by a solenoid.
REFERENCES:
patent: 3609014 (1971-09-01), Kurz
patent: 3972597 (1976-08-01), Repay et al.
Henry Jon W.
Koito Manufacturing Company Limited
Pfund Charles E.
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