Apparatus for driving rod for rotation

Details Apparatus for driving rod for rotation Apparatus for driving rod for rotation

1985-05-09

1987-10-27

Herrmann, Allan D.

Machine element or mechanism

Control lever and linkage systems

Elements

74818, 188299, 188319, 192142R, 192149, 25112912, F16D 7104, F16F 918, F16F 934

Patent

active

047021233

ABSTRACT:
A rod actuator which includes a d.c. motor, a reduction gearing, a solenoid assembly which is used to define an intermediate stop position, and rotation stops. The angular extent through which an output shaft of the reduction gearing is rotatable is limited by a pair of limit stops. The solenoid assembly includes a plunger which is located intermediate the limit stops. A rotational stop is rotatably mounted on the output shaft and has a projection which is adapted to abut against the plunger to cease the motion of the rotational stop. The rotational stop is mounted on the output shaft so as to be rotatable relative thereto through a small angle by a lost motion, but is driven for integral rotation with the output shaft when such angle is exceeded. A lost motion connector is used so the angles of rotation where the rotation of the output shaft is stopped by the plunger during its clockwise and counter-clockwise rotations will be substantially equal. The actuator may be used in a shock absorber mounted on a vehicle to establish three levels, "high", "medium" and "low", of attenuation exhibited by the shock absorber.

REFERENCES:
patent: 2477589 (1949-08-01), DuShane
patent: 2627405 (1953-02-01), Hlatko et al.
patent: 2912866 (1959-11-01), Noyes, Jr.
patent: 3015793 (1962-01-01), Fraser et al.
patent: 3063518 (1962-11-01), Stark
patent: 3717231 (1973-02-01), Kaufeldt
patent: 4444072 (1984-04-01), Grimes et al.
patent: 4463839 (1984-08-01), Ashiba

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