Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1997-03-25
1998-08-18
Hofsass, Jeffery A.
Communications: electrical
Condition responsive indicating system
Specific condition
307326, 340532, 361179, 361180, G08B 2300
Patent
active
057963410
ABSTRACT:
A safety device and an alarm system controller of a workspace providing bidirectional communication for determining whether the required safety devices are used by the work persons entering the workspace, and whether the safety devices are properly worn. The communication means used allow to associate one or more safety devices to a work person.
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patent: 4710751 (1987-12-01), Webster
patent: 4722021 (1988-01-01), Hornung et al.
patent: 5025175 (1991-06-01), Dubois, III
patent: 5315289 (1994-05-01), Fuller et al.
patent: 5666010 (1997-09-01), Stratiotis
Hofsass Jeffery A.
Schenck Paul F.
Tweel , Jr. John
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