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:
Jun. 17, 2003
Filed:
Nov. 18, 2002
Gilbert J. MacLachlan, Chalmette, LA (US);
The Laitran Corporation, Harahan, LA (US);
Abstract
A spiral conveyor with a belt having rollers at the inside edge. The spiral conveyor includes a rotating tower with a conveyor belt following a helical path around the tower. Rollers extending outward from the inner side edge of the belt have an axis of rotation generally parallel to the helical path. The rollers engage the outer surface of the tower in high-friction rubbing contact in the circumferential direction, but in low friction rolling contact in the vertical direction to provide a low-tension spiral conveyor system. The belt is preferably a modular conveyor belt constructed of a series of rows of belt modules connected together at hinge joints.