Communications: electrical – Selective – Having indication or alarm
Patent
1975-09-02
1977-05-24
Swann, III, Glen R.
Communications: electrical
Selective
Having indication or alarm
180103BF, 188 1A, 340240, B60Q 100
Patent
active
040257819
ABSTRACT:
A brake pressure failure warning circuit for a multi-line brake system includes a plurality of pressure switches sensitive to the fluid pressure in the respective lines and each actuable when the pressure in the associated line reaches a predetermined value, a detecting circuit connected to the switches and arranged to produce an output signal when any of the switches are actuated, a muting circuit arranged to prevent the detecting circuit's producing an output signal when all of the switches are actuated and warning means operable by said output signal.
REFERENCES:
patent: 2815502 (1957-12-01), Zeller
patent: 3439322 (1969-04-01), Gardner
patent: 3828308 (1974-08-01), Kobayashi
patent: 3887899 (1975-06-01), Kawaguchi et al.
Girling Limited
Swann III Glen R.
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