Actuator for a counter on a distance measuring device

Details Actuator for a counter on a distance measuring device Actuator for a counter on a distance measuring device

1989-10-17

1991-02-05

Cuchlinski, Jr., William A.

Geometrical instruments

Distance measuring

Of length by rolling contact

33781, 33782, G01B 312, G01B 704

Patent

active

049893424

ABSTRACT:
A distance measuring device is provided consisting of a frame, a wheel mounted to the frame for rotation about an axis and having a peripheral surface to be rolled against a surface to be measured, a distance counter, a lever arm mounted to the counter for pivoting movement between a first position and a second position, a structure on the counter for indicating a predetermined increment of distance as an incident of the lower arm moving from its first position to its second position, structure for normally biasing the lever arm into its first position, structure on the wheel for engaging the lever arm and moving the lever arm from its first position to its second position as an incident of the wheel rotating about its pivot axis in a first direction, and structure on the lever arm for both (1) intercepting the arm-engaging structure on the wheel and (2) deflecting as the arm-engaging structure moves against the intercepting structure with the wheel rotating oppositely to the first direction to thereby allow the arm-engaging structure to pass by the lever arm with the wheel rotating oppositely to the first direction without a detrimental torque being exerted on the lever arm by the arm-engaging structure.

REFERENCES:
patent: 2123360 (1938-07-01), Harris
patent: 2571682 (1951-10-01), Cochnar
patent: 3355101 (1967-11-01), Levinson

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