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:
Dec. 26, 1989
Filed:
Feb. 28, 1989
Robert D Heyl, Williamsport, PA (US);
The Young Industries, Inc., Muncy, PA (US);
Abstract
An apparatus for handling communited materials including a material hopper defining a zone into which the material may be deposited, a filter device having an inlet communicating with the material depositing zone, a pump defining a chamber for receiving material from the hopper, a valve for controlling the supply of material from the hopper to the pump chamber, a device for injecting fluid under pressure into the pump chamber to flush material disposed therein through a pump outlet, a valve for controlling the supply of fluid into the pump chamber, a venting conduit intercommunicating the pump chamber and the inlet of the filter device, and a valve for controlling the flow of fluid through the venting conduit.