Safety system for a machine tool

Details Safety system for a machine tool Safety system for a machine tool

1989-11-14

1991-09-10

Orsino, Joseph A.

Communications: electrical

Condition responsive indicating system

Specific condition

367 93, 192129A, 340552, G08B 2100

Patent

active

050477528

ABSTRACT:
A safety system for a machine tools having a powered feed table in which ultrasonic transmitters and receivers are arrayed on the leading, trailing and lateral sides of the table establishing moving protected zones so that if an operator enters the zones, the machine is shut down only if the table has moved close to the person in that zone. A failsafe feature causes shutdown in the event of failure of any of the safety system components.

REFERENCES:
patent: 3876969 (1975-04-01), Price, Jr.
patent: 3942601 (1976-03-01), Smith
patent: 4120389 (1978-10-01), Erickson
patent: 4408195 (1983-10-01), Tullis et al.
patent: 4910464 (1990-03-01), Trett et al.

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