The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 08, 1981
Filed:
Mar. 24, 1980
Friedrich Icking, Oelde, DE;
Westfalia Separator AG, , DE;
Abstract
A device for controlling actuators by pneumatic pulses includes a casing having an inlet for vacuum pulses and an outlet connectable to an actuator. A control wheel is rotatably mounted in the casing and has a plurality of indentations therein. A plunger is disposed in a chamber in the casing and is sealingly guided for movement from a normal rest position wherein the plunger is engaged with one of the indentations to a retracted position when the chamber is evacuated, wherein the plunger is engaged with a successive indentation. Rotation of the control wheel is effected when the plunger returns to the rest position. Fluid communication is provided between the inlet and the outlet and between the inlet and the chamber in the casing through the control wheel to control the supply of vacuum pulses to the outlet and to the chamber in dependence on the angular position of the control wheel.