Highly stable Z axis drive

Details Highly stable Z axis drive Highly stable Z axis drive

1996-01-26

1998-06-30

Herrmann, Allan D.

Machine element or mechanism

Control lever and linkage systems

Multiple controlling elements for single controlled element

7449004, 4147443, 901 15, F16H 2520, B25J 502, B25J 1800

Patent

active

057717486

ABSTRACT:
A vertical positioner comprises a rigid frame. A rigid vertically extending structure extends upwardly from a base to its upper end portion. A generally horizontal flange forms the structure upper end portion. It has a central opening and at least two peripheral openings. A vertically movable structure is telescopically mounted to the frame. It comprises an upper plate located above the flange. A lower generally parallel plate is located below the flange. A pair of parallel rods extend between the plates and pass through flange bearings. A central tube is connected between the lower and upper plates and passes through the flange via bearings. A motor is supported rigidly relative to the base for motivating relative vertical motion.

REFERENCES:
patent: 4166543 (1979-09-01), Dahlstrom
patent: 4466307 (1984-08-01), Kouno
patent: 4664587 (1987-05-01), Case, Jr. et al.
patent: 4762459 (1988-08-01), Morita et al.
patent: 5064340 (1991-11-01), Genov et al.
patent: 5178512 (1993-01-01), Skrobak
patent: 5220849 (1993-06-01), Lande et al.

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