Touch signalling probe

Details Touch signalling probe Touch signalling probe

1980-08-26

1981-07-21

Little, Willis

Geometrical instruments

Area integrators

Electrical

33169R, 33172E, 33174Q, G01B 702

Patent

active

042790808

ABSTRACT:
A touch signalling probe including a probe shaft having a touch sensor on its pointed end, an insulated contact base plate which is fixed to a probe case and has an aperture in its center through which the probe shaft can be penetrated, two sets of upper contact pair and two sets of lower contact pair attached on the upper and the reverse side of the insulated contact base plate, each set of which has two contact members, upper and lower contact arms fixed to the probe shaft and keeping contact with each of contact members, a probe tube slidingly moving along the probe shaft, a spring providing the urging force, and detecting lead wires connecting the respective contact members in series.

REFERENCES:
patent: 4136458 (1979-01-01), Bell et al.
patent: 4138823 (1979-02-01), McMurtry
patent: 4153998 (1979-05-01), McMurtry
patent: 4155171 (1979-05-01), McMurtry
patent: 4158919 (1979-06-01), McMurtry

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