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. 26, 1995
Filed:
Jul. 18, 1994
Donald E Morency, Saskatoon, CA;
Lorne M Wandzura, Saskatoon, CA;
Cominco Engineering Services Ltd., Vancouver, CA;
Abstract
A tandem drive unit (24) on a flexible conveyor belt (12) comprises a primary drive pulley (20) and a secondary drive pulley (22) driven by a primary drive motor (26, 28) and a secondary drive motor (34) respectively. The primary drive motor (26, 28) has a predetermined full-load speed and the secondary drive motor (34) has a full-load speed which is not greater than a theoretical speed value for the secondary drive pulley (22) obtained by calculating the speed differential between the primary and secondary pulleys as a function of the horsepower applied to the first and secondary drive pulleys and the modulus of elasticity of the conveyor belt (12). Alternatively, a secondary drive motor with a predetermined full-load speed may be selected and the required full-load speed of the primary drive motor may be determined. A method of non-mechanically coupling a primary and a secondary drive pulley in a tandem conveyor drive of a conveyor belt is also provided.