Length probe with tracing unit and switch arrangement

Details Length probe with tracing unit and switch arrangement Length probe with tracing unit and switch arrangement

1979-08-02

1981-03-03

Haroian, Harry N.

Geometrical instruments

Area integrators

Electrical

235 92DN, G01B 312

Patent

active

042532396

ABSTRACT:
A hand-held portable length probe having a length measuring wheel and a tracing unit disposed adjacent the measuring wheel, the tracing unit being slidably carried by the probe housing and acting to actuate a switch secured in fixed relation on the probe housing. The switch is illustrated as a miniature snap action switch, actuated by the slidable tracing unit either directly or indirectly through an intermediate adjustable spring lever arm; and is also illustrated as a magnetically actuated switch in the form of a reed switch which is actuated by a permanent magnet carried by the sliding tracing unit. The wheel is carried in a removable nose element which serves to aid in anchoring the tracing unit housing to the length probe main housing. The switch is carried, in the illustrative examples, by a retention clip.

REFERENCES:
patent: 3342979 (1967-09-01), Wright et al.
patent: 3601585 (1971-08-01), Paulsen

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