Flow sensor

Details Flow sensor Flow sensor

1981-12-28

1984-04-17

Scott, J. R.

Electricity: circuit makers and breakers

Fluid pressure

Flow-responsive type

200 819R, 340606, H01H 3524

Patent

active

044436718

ABSTRACT:
The invention provides a flow sensor (10) for providing an electrical output indicating a no flow condition, an intermediate flow rate, and a high flow rate and is particularly suited for sensing the flow of lubricant to a two-cycle engine. The flow sensor (10) includes a metallic reed valve member (22) which contacts a valve seat (28) to provide a no flow signal or an adjustable contact member (31) to provide a high flow signal. The reed valve member (22) contacts neither the valve seat (28) nor the contact member (31) to indicate an intermediate flow rate.

REFERENCES:
patent: 1619103 (1927-03-01), Doman
patent: 1693309 (1928-11-01), Mettler
patent: 2495443 (1950-01-01), Castellano
patent: 2558235 (1951-06-01), Castellano
patent: 3293389 (1966-12-01), Von Bhicknapahari
patent: 3689719 (1972-09-01), Phillips et al.
patent: 3814877 (1974-06-01), Alvarez
patent: 4000386 (1976-12-01), Brouwer
patent: 4297552 (1981-10-01), Lauritsen et al.

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