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:
Jul. 22, 1997
Filed:
May. 07, 1996
Michael J Stokes, Cincinnati, OH (US);
Michael J Middendorf, Florence, KY (US);
Littleford Day, Inc., Florence, KY (US);
Abstract
A conical mixer for mixing and processing materials comprises a mixing chamber, an orbit arm positioned within the chamber for rotating therearound and a mixing screw coupled to the end of the orbit arm for rotation simultaneous with the rotation of the orbit arm. A driver for rotating the screw is coupled to an orbit arm assembly which includes a first drive gear coupled to the driver and a first mixing screw shaft with a first driven gear which cooperates with the first drive gear to rotate the first mixing screw shaft. A second drive gear is positioned at the end of the first mixing screw shaft and cooperates with a second driven gear which is, in turn, coupled to a second mixing screw shaft. Each of the driven gears includes a plastic gear portion to engage the respective drive gear in a generally lubricant free engagement for reducing the amount lubricant exposed to the mixing space of the chamber. The first and second mixing screw shafts are supported by a plurality of bearings. The bearings include solid lubricant therein which is generally solidly contained in the bearing during operation of the orbit arm for preventing exposure to the inside of the mixer. Thereby contamination of the mixing space and maintenance of the mixer is reduced.