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:
Oct. 12, 1982
Filed:
Jun. 04, 1979
Robert J Chilko, Lower Burrell, PA (US);
Aluminum Company of America, Pittsburgh, PA (US);
Abstract
Apparatus is disclosed for moving particulate material such as alumina toward an outlet to a container while minimizing dispersion of dust into the atmosphere. The apparatus includes at least one coil spring which is disposed generally horizontally in the container with one end anchored to the container and the other end, which is disposed near the outlet, connected to a lever arm and crank for cyclically extending and contracting the spring. Such cyclic extension and contraction of the spring moves or at least encourages the flow of the particulate material to the outlet for gravity discharge therefrom and essentially eliminates problems of bridging and rat holes in the material.