Simultaneous control of multiple liquid level settings in a diaphragm valve, using a single rotatable control shaft

Simultaneous control of multiple liquid level settings in a diaphragm valve, using a single rotatable control shaft

A method and apparatus are provided for simultaneously changing multiple liquid level settings in a liquid-level switch including a diaphragm actuated pressure switch apparatus having a first and a second switch, through use of an actuator apparatus including a single control knob shaft rotatably co...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: VAN DER LINDE ROBERT J, TUMA PAUL H, KLOPP JEROME C, HAWKEN PHILIP C
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
ELECTRIC SWITCHES
ELECTRICITY
EMERGENCY PROTECTIVE DEVICES
RELAYS
SELECTORS
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Beschreibung
Zusammenfassung:A method and apparatus are provided for simultaneously changing multiple liquid level settings in a liquid-level switch including a diaphragm actuated pressure switch apparatus having a first and a second switch, through use of an actuator apparatus including a single control knob shaft rotatably connected to the pressure switch apparatus and having a first and a second cam fixedly attached to the shaft for rotation therewith, the first cam being operatively connected to provide a biasing force against actuation of the first switch, and the second cam being operatively connected to provide a biasing force against actuation of the second switch.