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. 12, 1985
Filed:
Sep. 30, 1983
Norman R Wallace, Walnut Creek, CA (US);
Bechtel International Corporation, San Francisco, CA (US);
Abstract
Apparatus and a method for handling a slurry contained in a tank having a slurry inlet and a slurry outlet. The tank has an open top, and a framework on which a plurality of buckets are mounted is located in the tank for rotation about a central axis through a shaft mounted on the upper margins of the tank. The buckets move along a circular path and into the tank to scoop settled particles on the bottom of the tank and then to lift the particles out of the slurry. In one form of the apparatus, the particles are dropped back into the slurry in the tank to thereby eliminate the growth of settled particles on the bottom of the tank to achieve uniform particle concentrations in the slurry. In another embodiment, the apparatus operates as a thickener in which the particles are unloaded from the buckets exteriorly of one side of the tank and carried away by a launder while the liquid in the tank overflows the tank at the opposite side thereof. In another embodiment, the apparatus operates as a classifier in which bed particles are dropped from the buckets into an adjoining tank and the overflow from the opposite side of the adjoining tank is directed back into the primary tank.