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:
Sep. 07, 1976
Filed:
Apr. 03, 1975
Raymond M Leliaert, South Bend, IN (US);
Wheelabrator-Frye, Inc., Mishawaka, IN (US);
Abstract
A method and apparatus for scrubbing particles of sand used in foundry molding is disclosed. The device utilizes a rotating impellor surrounded by a stationary control cage having at least one upwardly positioned opening therein to project sand against a target. The sand rebounds from the target and is continually intercepted and impacted by subsequent grains of sand hurled by the impellor through the control cage opening. The device produces a scrubbing action on the particles by the repeated and continual contact with each to reduce binder buildup from the molding process. A first stage scrubbing of the particles is obtained by causing the particles to be compacted between the rotating impellor and the control cage prior to their being thrown against the target. The sand particles may be recycled through the device any number of times in order to increase the scrubbing effect and further reduce binder buildup.