Contact probe assembly with fine positioning means

Details Contact probe assembly with fine positioning means Contact probe assembly with fine positioning means

1988-04-19

1990-03-13

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

324 725, 324158F, G01R 106, G01R 3102

Patent

active

049085719

ABSTRACT:
A contact probe assembly is described comprising a motor-driven fine positioning means. The fine positioning means permits the contact probe assembly to move in two directions X and Y which are perpendicular to each other. For positioning several contact probe assemblies, provided with fine positioning means, closely adjacent to each other, the longitudinal axis of each fine positioning means extends perpendicularly to the plane defined by the X and the Y direction. An electromotor is provided for either direction of movement. In one embodiment, fine positioning in either direction is effected by a perpendicularly arranged hollow shaft, the lower end of which is eccentrically shaped, reciprocally moving a carrier slide which is permanently connected to the contact probe assembly. The hollow shaft for moving the contact probe assembly in the Y direction is arranged inside the hollow shaft for movement in the X direction. The travel performed is detected by sensors. In a second embodiment, the contact probe assembly is fine positioned by means of wedges, two of which connected to each other by a seesaw, rest on opposite surfaces of a quadrangular pyramid frustrum which is permanently connected to the contact probe assembly. The up and down movement of the wedges fine positions the contact probe assembly in the X and the Y direction, respectively.

REFERENCES:
patent: 3787768 (1974-01-01), Kubota et al.
patent: 4063172 (1977-12-01), Faure et al.
patent: 4471298 (1984-09-01), Frohlich
patent: 4686464 (1987-08-01), Elsasser et al.

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