Control apparatus responsive to liquid flow

Details Control apparatus responsive to liquid flow Control apparatus responsive to liquid flow

1977-08-31

1978-10-03

Croyle, Carlton R.

Pumps

Condition responsive control of pump drive motor

Responsive to accumulation of pumped liquid in receiver

73219, F04B 4902

Patent

active

041181506

ABSTRACT:
Control apparatus is provided responsive to liquid flow which has in the suction line of the pump a float operated magnetically actuated switch in which the float is moved to one position by the presence of liquid attendant on flow and moves to another position upon cessation of flow with provisions including an expansible chamber for impelling the float to the other position either by delivering gas or air to the float chamber or by positively moving the float to the other position. The apparatus is particularly suitable for use in closed systems utilizing supply containers which are collapsed as the liquid is withdrawn.

REFERENCES:
patent: 2949126 (1960-08-01), Kuntz et al.
patent: 2955173 (1960-10-01), Kranz
patent: 3091184 (1963-05-01), Wood
patent: 3149571 (1964-09-01), Myers
patent: 3710612 (1973-01-01), Innes et al.
patent: 3867070 (1975-02-01), Sloan
patent: 4021144 (1977-05-01), Matsusaka

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