Fail-safe interlock system

Details Fail-safe interlock system Fail-safe interlock system

1975-09-18

1977-05-24

Aegerter, Richard E.

Fluent material handling, with receiver or receiver coacting mea

Miscellaneous

137351, 180 82R, B65B 304, B65B 5700

Patent

active

040248976

ABSTRACT:
A fail-safe interlock system is disclosed for use in conjunction with a truck which has a filler valve for the loading of product, and which eliminates the safety hazard of driving the truck away from a loading facility while a loading hose is still connected to the vehicle's filler valve. Movement of a shield in a direction which permits clear access to the end of the filler valve causes the vehicle's ignition circuit to be broken, thereby preventing driving of the truck while the loading hose is connected to the end of the filler valve; and correspondingly, movement of the shield in the opposite direction to where it at least partially covers the end of the filler valve causes the restoration of the ignition circuit, thereby permitting driving of the vehicle after the loading hose has been safely disconnected.

REFERENCES:
patent: 1960831 (1934-05-01), Shand
patent: 2871872 (1959-02-01), Rowles
patent: 3119406 (1964-01-01), Hartung
patent: 3157194 (1964-11-01), Stolte

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