Patent Number: 6,305,916

Title: Concrete pump with pivotable hopper assembly

Abstract: The hopper of a concrete pump is pivotally mounted on the frame of the pump so that the hopper can be swung away from the pumping cylinders in order to clean the S-valve in the hopper. O-rings on the frame surround the pumping cylinders and sealingly engage the hopper when the hopper is closed against the pumping cylinders.

Inventors: Reinert; Gerald H. (Cold Spring, KY)

Assignee: Reinert; Gerald

International Classification: F04B 15/02 (20060101); F04B 15/00 (20060101); F04B 039/00 (); F04B 007/00 (); F04B 015/02 ()

Expiration Date: 10/23/2018