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:
Apr. 26, 1977
Filed:
Mar. 27, 1975
Applicant:
Inventor:
Friedrich Schwing, Wanne-Eickel, DT;
Assignee:
Friedrich Wilhelm Schwing GmbH, Wanne-Eickel, DT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B / ; F04B / ;
U.S. Cl.
CPC ...
417517 ; 417519 ; 417900 ;
Abstract
A distributing valve for twin cylinder pumps for pumping viscous materials such as concrete, has an oscillating body with closing elements, for the suction orifices and pressure orifices for the pump cylinders mounted on a shaft disposed outside the part of the pump casing acted upon by the pump pressure. The closing elements are arranged on the same side of the rotating shaft and a pair of closing elements is provided either for the suction orifices or for the pressure orifices.