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:
Nov. 08, 1977
Filed:
Aug. 20, 1975
Applicant:
Inventor:
Friedrich Schwing, Herne, DT;
Assignee:
Friedrich Wilhelm Schwing GmbH, Herne, DT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B / ;
U.S. Cl.
CPC ...
417519 ; 13762521 ; 13762546 ; 417900 ;
Abstract
In a multi-cylinder pump for conveying concrete, the flow of concrete to and from the cylinders is controlled by a pivot body containing a pressure channel. The pressure channel is bounded by blades, each of which has a blade plate shaped in accordance with the flow of material and sealed to the pump casing wall at its edges. Each blade also has a base whereby it is attached to the pivot body shaft.