Electrical transmission or interconnection systems – Switching systems – Condition responsive
Patent
1978-06-16
1980-06-24
Hix, L. T.
Electrical transmission or interconnection systems
Switching systems
Condition responsive
307149, 340626, 222 23, H01H 3524
Patent
active
042097126
ABSTRACT:
An arrangement for installing electronic counters in a petrol pump comprising a pressure-tight casing for accommodating the counters, means for providing an excess air pressure in the interior of the casing and a pressure-controlled switch inside the casing for interrupting the current supply to the counters when the pressure falls below a specific level.
REFERENCES:
patent: 3216659 (1965-11-01), Ambler et al.
patent: 3688291 (1972-08-01), Bateman et al.
patent: 3894658 (1975-07-01), Buell
patent: 4049935 (1977-09-01), Gruber
Auto Tank AB
Dwyer James L.
Hix L. T,.
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