Boots – shoes – and leggings
Patent
1987-07-02
1989-06-27
MacDonald, Allen
Boots, shoes, and leggings
376215, 376245, G21C 1700, G06F 1100
Patent
active
048435376
ABSTRACT:
A safety control safeguard system includes sensors disposed in a quadruple array. First, second, third and fourth signal processing channels provided in parallel each include signal processing means for receiving output signals from the associated sensors for producing a trip signal. First and second actuating means operable independent of each other are provided for actuating an apparatus to be controlled. A first switch means operatively connected to the first, second, third and fourth processing channels for activating the first actuating means in response to reception of the trip signal produced by the signal processing channels and second switch means operatively connected to the first, second, third and fourth processing channels for activating the second actuating means in response to reception of the trip signal produced by the signal processing channels. The first and second switching means are operable independent of each other and constitute a 2-out-of-4 logic circuit in cooperation with the first and second actuating means.
REFERENCES:
patent: 4434132 (1984-02-01), Cook
patent: 4664870 (1987-05-01), Hager
patent: 4683105 (1987-07-01), Hager
patent: 4687623 (1987-08-01), Cook
patent: 4696785 (1987-09-01), Cook et al.
patent: 4697093 (1987-09-01), Sutherland et al.
patent: 4752869 (1988-06-01), Miller et al.
Arita Setsuo
Izumi Shigeru
Murata Fumio
Noguchi Atomi
Ookido Fumiyasu
Hitachi , Ltd.
MacDonald Allen
LandOfFree
Control system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-818103