Line leak test apparatus with jam proof reset

Details Line leak test apparatus with jam proof reset Line leak test apparatus with jam proof reset

1990-03-09

1992-04-07

Dixon, Joseph L.

Boots, shoes, and leggings

364510, 364184, 73 40, 222 52, 222 59, G06F 1500, G01N 700

Patent

active

051034107

ABSTRACT:
A line leak test probe for use in a liquid storage and dispensing system which includes a pump. The probe is electrically connected to a central monitor. A pressure transducer may be mounted in mechanical contact with the liquid to provide a pressure signal to a microprocessor-based circuit which disables the pump when a leak is detected. An manually operated reset switch is electrically connected to the reset input of the microprocessor through an inverter. Manually pressing the reset switch causes the microprocessor to shut off causing the central monitor to output an error signal. The monitor may be programmed to either enable or disable the pump in response to the error signal. Thus, by programming the monitor to disable the pump, the user may prevent the system from being abused by the placing of a brick or other object on the reset switch to continuously provide a reset when there is a leak. When the reset switch is released, the microprocessor turns back on and resets itself.

REFERENCES:
patent: 3982664 (1976-09-01), Robbins et al.
patent: 4658986 (1987-04-01), Freed et al.
patent: 4797007 (1989-01-01), Elmore, III
patent: 4835717 (1989-05-01), Michel et al.

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