Safety device

Details Safety device Safety device

2006-06-09

2008-09-30

Bugg, George A (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S508000, C340S512000

Reexamination Certificate

active

07429929

ABSTRACT:
A safety device includes a safety module (11), a data bus (12) and one or several transmitters (15, 16, 17, 18, 19, 20). The safety module transmits a pulse train (one dynamic signal) over the bus (12) constituting a loop, whereby the pulse train is connected to each of the transmitters, wherein the pulse is phase inverted.

REFERENCES:
patent: 3611361 (1971-10-01), Gallichotte et al.
patent: 3634824 (1972-01-01), Zinn et al.
patent: 4356475 (1982-10-01), Neumann et al.
patent: 4543566 (1985-09-01), Buck et al.
patent: 4906979 (1990-03-01), Kimura
patent: 0 729 124 (1996-08-01), None
patent: 2 233 803 (1991-01-01), None

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