Remote and proximal interlock testing mechanisms and testing sys

Details Remote and proximal interlock testing mechanisms and testing sys Remote and proximal interlock testing mechanisms and testing sys

1997-05-21

1999-02-09

Teska, Kevin J.

Boots, shoes, and leggings

307115, 307116, 36420726, G06F 1122

Patent

active

058703179

ABSTRACT:
This invention relates to a novel process with attendant methods and apparatus for testing interlocks on machine barrier guards or equivalent safeguards. The process simulates the breaching of the interlocked safeguard to test the interlock without shutting down the machine operation. Failed interlocks are identified and their status warned against. Furthermore, the associated barrier guards may be physically locked to prevent access to their protected space while allowing normal machine operations until maintenance is practical. The testing process makes possible the reliable interlocking of fixed guards and may be automated to prevent bypassing or sabotage of interlocked safeguarding systems.

REFERENCES:
patent: 5281857 (1994-01-01), Keese
patent: 5648719 (1997-07-01), Christensen et al.

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