Touch signal probe

Details Touch signal probe Touch signal probe

1983-05-04

1985-05-14

Haroian, Harry N.

Geometrical instruments

Area integrators

Electrical

33559, G01B 702

Patent

active

045163278

ABSTRACT:
A touch signal probe used in a coordinate measuring instrument or the like having a probe to brought into contact with a workpiece to be measured and outputting an electrical signal when in contact with the workpiece. The probe includes a probe case for tiltably and vertically movably holding the probe, a top plate affixed to the end portion of the probe case and having a shank, a stationary plate housed in the probe for fixing and holding a top end portion of the probe, an abutting ball and an engaging ball which are affixed to the stationary plate, a side receiving seat affixed to the probe case for being abutted against by the abutting ball to control the movement of the stationary plate in the lateral direction, an engagable seat affixed to the probe case having an engageable groove to be abutted thereagainst by said engaging ball at two points for controlling the position of the stationary plate in the lateral direction, three contact point balls affixed to the stationary plate at substantially equaliangular intervals, three stationary contact points affixed to the bottom receiving seat in opposed relations to the contact balls and biasing means for urgingly biasing the stationary plate.

REFERENCES:
patent: 4270275 (1981-06-01), McMurtry
patent: 4279080 (1981-07-01), Nakaya
patent: 4360973 (1982-11-01), McMurtry

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