Position indicator for a piston controlled robot part

Details Position indicator for a piston controlled robot part Position indicator for a piston controlled robot part

1992-05-20

1993-04-13

Strecker, Gerard R.

Handling: hand and hoist-line implements

Hook, hoistline, or grab type

Locking device

294907, 3242072, 32420722, 414730, 901 46, 901 31, B25J 1902, G01R 3306

Patent

active

052018385

ABSTRACT:
A piston-cylinder assembly is equipped with means for determining and validating the piston position of that assembly part of a robot. A piston 1 slides axially in a cylinder 2, and moves a permanent magnet 13. The resulting magnetic field is sensed by a Hall effect transistor. A member 12 is controlled by a program of analog signals coming from the sensor. When the run of piston 1 is stopped, the position of that piston is one of the positions that have been previously determined and memorized by control member 12.

REFERENCES:
patent: 4107604 (1978-08-01), Barnier
patent: 4385297 (1983-05-01), Schmitt et al.
patent: 4555120 (1985-11-01), Frait et al.
patent: 4658214 (1987-04-01), Petersen
patent: 4723503 (1988-02-01), Yada
patent: 4730861 (1988-03-01), Spencer
patent: 4793241 (1988-12-01), Mauo et al.
patent: 4836578 (1989-06-01), Soltis
patent: 5004391 (1991-04-01), Burdea
patent: 5022695 (1991-06-01), Ayers

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