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. 24, 2001
Filed:
Dec. 23, 1999
Hellmut Hurr, Reutlingen, DE;
Klaus Bührer, Filderstadt, DE;
Hartmut Benckert, Filderstadt, DE;
Abstract
The invention relates to a sliding device for two-cylinder pumps for liquids, especially designed for concrete pumps. The sliding device (,) has a pivot pipe (,) which is bent and has substantially a C-shape. The pivot pipe is fixedly connected, at its upper end, to an extension pipe (,) protruding over a back wall (,) of a material feeding bin and connected, at its end opposite the pivot pipe, to a discharge conduit through a pipe rotating connection. The pivot pipe is placed in such a way that it is able to pivot about the axis of the extension pipe so that its other end is connected alternatively to the openings of the discharge cylinder (,). In order to ensure reliable operation in spite of frictional wear in the extension pipe (,), the invention provides for a support pipe (,) which coaxially overlaps the extension pipe (,), is fixedly connected to the upper end of the pivot pipe and extends over least on one part of the extension pipe (,). The support pipe (,) is stayed upon at least one rotating support (,) connected to the material feeding bin and spaced apart from the back wall (,) of the material feeding bin (,) and releasably connected to the extension pipe (,).