Fluent material handling – with receiver or receiver coacting mea – Automatic control of flow cutoff or diversion – Level or overflow responsive
Patent
1979-06-04
1981-07-07
Schmidt, Frederick R.
Fluent material handling, with receiver or receiver coacting mea
Automatic control of flow cutoff or diversion
Level or overflow responsive
116228, 137199, 137558, 141212, 141226, B65B 318, B65B 5714
Patent
active
042769167
ABSTRACT:
An automatic shut-off nozzle has liquid flow through its vapor return means stopped in response to movement of an actuator by a flexible diaphragm when liquid has filled the vapor line sufficiently to move a float into engagement with the diaphragm. The actuator produces a signal to cause stopping of liquid flow through the nozzle. In another embodiment, a flexible diaphragm is positioned to block vapor flow through the vapor return means when a predetermined quantity of liquid is collected by the diaphragm. The blocking of the vapor return means creates an increased pressure, which can be sensed by a pressure transducer, for example, with the pressure transducer producing a signal to stop liquid flow through the nozzle. The automatic shut-off nozzle also stops flow in response to the tank being filled to a predetermined level with liquid or to the pressure in the tank exceeding a predetermined pressure.
REFERENCES:
patent: 4049029 (1977-09-01), Hansel
patent: 4062384 (1977-12-01), Frahm
patent: 4072934 (1978-02-01), Hiller
patent: 4090539 (1978-05-01), Krupp
patent: 4098306 (1978-07-01), Askevold
patent: 4167957 (1979-09-01), Voelz et al.
Dover Corporation
Schmidt Frederick R.
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