Monitoring devices

Details Monitoring devices Monitoring devices

1979-05-07

1981-01-20

Scott, James R.

Electricity: circuit makers and breakers

Special application

Frangible or destructible type

200 614, H01H 3500

Patent

active

042464560

ABSTRACT:
A monitoring device is provided for monitoring the gap between two relatively moving parts. In its preferred form the device consists of a bar of fracturable material mounted on one part and extending towards the other. A striker mounted on the other part is provided to hit and fracture the bar when the gap separation reduces by a predetermined amount. The bar is weakened at a position where fracture is desired and a conductive track is provided across the line of fracture which track is rendered open circuit as fracture occurs.

REFERENCES:
patent: 3230327 (1966-01-01), McDowell
patent: 3477019 (1969-11-01), Hartmann
patent: 3751613 (1973-08-01), Inose et al.
patent: 3822369 (1974-07-01), Kunczynski
patent: 3825891 (1974-01-01), Kinast
patent: 3853199 (1974-12-01), Hirashima et al.
patent: 3869695 (1975-03-01), Kita
patent: 4006326 (1977-02-01), Lejeune

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