Precision carriage and housing for relative position sensing dev

Details Precision carriage and housing for relative position sensing dev Precision carriage and housing for relative position sensing dev

1988-07-08

1990-01-09

Hannon, Thomas R.

Bearings

Linear bearing

Roller bearing

384 15, 384 53, F16C 2904, F16C 2908, G01B 1104

Patent

active

048924164

ABSTRACT:
A carriage and housing for a position sensing device of the type having a carriage for carrying a reader for reading the position of the carriage with respect to the housing along a position line of the device. The improvements include a carriage with five bearings to restrict the carriage to motion parallel to the position line. The carriage and housing are isolated in a frame of reference by the housing having first and second planar reference surfaces on which the bearings ride and first and second springs which urge the carriage toward the first and second reference surfaces by contact with first and second spring supports which form part of the housing and extend parallel to the first and second reference surfaces and the position line. A yoke moves the carriage but is isolated from the carriage by a five degree of freedom of movement connection. The yoke has arms with facing bearings which contact but float on planar bearing surfaces on the carriage which extend perpendicular to the position line. The housing has one fixed end cap and one cap with a floating connection to prevent the mounting of the housing from damaging the housing or the reference surfaces.

REFERENCES:
patent: 1245324 (1917-11-01), Droitcour
patent: 2907939 (1959-10-01), Apgar
patent: 3407011 (1968-10-01), Zeidler
patent: 3816003 (1974-06-01), Litke
patent: 3867037 (1975-02-01), Litke
patent: 4070759 (1978-01-01), Nelle
patent: 4198757 (1980-04-01), Neele
patent: 4222461 (1980-09-01), Gunti
patent: 4340814 (1982-07-01), DiCiaccio
patent: 4376543 (1983-03-01), Sakagami
patent: 4387300 (1983-06-01), Dudash

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