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:
Aug. 15, 2017
Filed:
Apr. 16, 2015
Robert a Drake, Rocky River, OH (US);
Robert A Drake, Rocky River, OH (US);
Other;
Abstract
Mixed concrete is pumped under pressure along a primary flow path to a typically lengthy supply line. In the event a clog, blockage or other supply line concern is detected, a branch conduit in communication with the primary flow path permits a portion or all of the pressurized flow to pass through a diverter valve and a recirculation conduit back into an open-to-atmosphere reservoir or hopper from which the concrete originally was pumped. The recirculation system of this invention permits supply line pressure to be safely regulated, diminished, relieved and jogged, all without there being any need to discharge or waste valuable mixed concrete, and without having to dangerously open one or more connections of a pressurized supply line.