Electrical contact making arrangement for monitoring the conditi

Details Electrical contact making arrangement for monitoring the conditi Electrical contact making arrangement for monitoring the conditi

1986-03-18

1987-12-15

Bryant, III, James E.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200 6193, 200336, H01B 340

Patent

active

047135069

ABSTRACT:
An electrical contact making arrangement for monitoring the condition of a screw screwed in a screwthread or other material receiving same comprises contacts connected to a suitable alarm or warning circuit, and a bridging contact which makes or breaks a connection between the contacts to close or open the circuit when the screw is turned out of a reference set position thereof.The bridging contact is arranged on the shank of the screw, being electrically insulated at least with respect to the head of the screw, and extends peripherally over a given angle so that the circuit is opened or closed at a slight angle of rotary movement when the screw is turned out of the reference position thereof.

REFERENCES:
patent: 2579623 (1951-12-01), Stanley
patent: 3644745 (1972-02-01), Bell
patent: 3803577 (1974-04-01), Peterson, II
patent: 4151506 (1979-04-01), Schoenmetz
patent: 4329681 (1982-05-01), Parsons

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