Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1983-07-20
1985-11-19
Woodiel, Donald O.
Communications: electrical
Condition responsive indicating system
Specific condition
33366, 73749, G08B 2100, G01L 910
Patent
active
045545359
ABSTRACT:
A method of obtaining electrical signals corresponding to the position of a mercury mass movable within a vessel, characterized by the fact that the position of the moving mass within the vessel is detected by means of at least one electromagnetic proximity sensor, specifically an induction proximity sensor, that is a sensor adapted to producing an electrical signal when approached by a metal object or when approaching the same.
REFERENCES:
patent: 3839904 (1974-10-01), Stripling et al.
patent: 4325190 (1982-04-01), Duerst
patent: 4414541 (1983-11-01), Ho
Floris Pier-Luigi
O'Toole Yvonne
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