Load-sensing pneumatic control system

A pneumatic control system for selectively controlling a pneumatically-operated device for controlling movement of a variable load, such as a material handling device or lifting and lowering device, is capable of automatically sensing the load exerted on the pneumatically-operated device and automat...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	CHABOT, JOHN V, LANGNER, LUKE E
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING CAPSTANS DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS HAULING HEATING HOISTING HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDEDFOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCEDIRECTLY TO THE SURFACE OF A LOAD HOISTS HYDRAULICS OR PNEUMATICS IN GENERAL LIFTING LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL TACKLES, e.g. PULLEY BLOCKS TRANSPORTING WEAPONS WINCHES
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Beschreibung
Zusammenfassung:	A pneumatic control system for selectively controlling a pneumatically-operated device for controlling movement of a variable load, such as a material handling device or lifting and lowering device, is capable of automatically sensing the load exerted on the pneumatically-operated device and automatically self-compensating for varying loads in order to selectively maintain the load in a static condition. The system further allows for ease of manual manipulation of the load to a new static condition and automatically self-compensates in order to maintain the load at such new static condition. The system preferably accomplishes this by automatically detecting the outlet pneumatic pressure necessary to maintain the load in a first static condition and for automatically self-adjusting the outlet pneumatic pressure to maintain the load in a second static condition.