Method of Forming a Seamless Tractor Drive Belt
Original Publication Date: 1986-Jul-01
Included in the Prior Art Database: 2005-Mar-09
An endless loop belt is formed for use in a tractor drive for transporting edge perforated forms. The belt is formed from a thin film disk of polyimide, such as one punched from a sheet of material in the shape of a ring, as shown in FIG. 1. The polyimide ring is heated and a heated, wedge-shaped tool is inserted through the aperture of the ring, enlarging it and forming it into an endless belt (FIG. 2). The belt has an inside diameter that corresponds to the widest dimension of the wedge-shaped tool, as illustrated by dimension X in FIGS. 1 and 2.