Fluent material handling – with receiver or receiver coacting mea – With signal – indicator – recorder – inspection means or exhibitor
Patent
1979-04-17
1981-01-13
Bell, Jr., Houston S.
Fluent material handling, with receiver or receiver coacting mea
With signal, indicator, recorder, inspection means or exhibitor
141 98, 141113, 141198, 141 59, 222 52, 222192, B65B 304
Patent
active
042444039
ABSTRACT:
Liquid is transferred between a reservoir and a truck tank by means of a pump which pumps the liquid through a conduit leading to the tank and separably couples to the reservoir. An air opened, normally mechanically closed valve connecting the tank with the pump is operated when the pump is operated to permit flow between the tank and reservoir. The pump is operated by control mechanism that is operable to enable and disable its operation. It is connected to an energy source via a multiple position switching device which disables operation of the pump when the level of fluid in the tank reaches a predetermined height, and at the same time permits the safety valve to close. In another position of the switching means, the pump is rendered operable regardless of the fluid level in the tank and the valve will at that time also be open regardless of the fluid level in the tank. A system is disclosed in which both loading and unloading operations can be carried out with an electrical control system which prevents spill and the accumulation of dangerous vapors.
REFERENCES:
patent: 4007765 (1977-02-01), Bellows
patent: 4091846 (1978-05-01), Legleiter
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