Counterbalanced coordinate-measuring instrument

Details Counterbalanced coordinate-measuring instrument Counterbalanced coordinate-measuring instrument

1989-06-19

1990-10-23

Cuchlinski, Jr., William A.

Geometrical instruments

Gauge

Coordinate movable probe or machine

33504, 33 1M, G01B 503

Patent

active

049642219

ABSTRACT:
A coordinate-measuring instrument has a purely mechanical device (14) to compensate for the weight of a vertically displaceable spindle (9). The compensation device consists of a helical-coil spring having a working range which is small as compared with its length in relaxed condition, and a belt transmission interposed between the spring and the spindle (9). The belt transmission is preferably developed in the manner of a block and tackle. A first or drive pulley engages and drives the belt for Z-axis positioning of the spindle, and a second or belt-tension pulley applies weight-compensating tension to the belt.

REFERENCES:
patent: 1916651 (1933-07-01), Beeman et al.
patent: 2742280 (1956-04-01), Wilcox
patent: 2851266 (1958-09-01), Klamp
patent: 3818596 (1974-06-01), Stemple et al.
patent: 3869799 (1975-03-01), Meuer et al.
patent: 4351245 (1982-09-01), Laporte
patent: 4704821 (1987-11-01), Berndt
patent: 4727653 (1988-03-01), Fujitani et al.
patent: 4760622 (1988-08-01), Rohrman
patent: 4835871 (1989-06-01), Pesikov

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