Contact-sensing probe

Details Contact-sensing probe Contact-sensing probe

1981-06-23

1983-03-08

Stearns, Richard R.

Geometrical instruments

Area integrators

Electrical

G01B 702

Patent

active

043757235

ABSTRACT:
A contact-sensing probe has a movable member including a stylus and is supported on a fixed member at two spaced-apart locations. At each location a spherical element on the one member is situated between convergent surfaces of the other member. A spring urges the movable member into engagement with the fixed member so that at each location the element slides on the convergent surfaces and by virtue of the convergence thereof attains a positive rest position therebetween. The movable member is displaceable from the rest position against the force of the spring when a force is applied to the stylus and is returnable into the rest position by the spring. The elements and surfaces may be electrical contacts, displacement of the stylus being sensed by any one of the contacts being broken. Alternatively displacement is sensed by a proximity sensor.

REFERENCES:
patent: 3766653 (1973-10-01), McKay, Sr.
patent: 4136458 (1979-01-01), Bell et al.
patent: 4153998 (1979-05-01), McMurtry
patent: 4155171 (1979-05-01), McMurtry
patent: 4177568 (1979-12-01), Werner et al.
patent: 4254554 (1981-03-01), Germano et al.
patent: 4288925 (1981-09-01), McMurtry

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