Browse Prior Art Database

Method of Forming a Seamless Tractor Drive Belt

IP.com Disclosure Number: IPCOM000061867D
Original Publication Date: 1986-Jul-01
Included in the Prior Art Database: 2005-Mar-09
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Koteff, WB: AUTHOR [+2]

Abstract

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.

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Method of Forming a Seamless Tractor Drive Belt

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.

The heating process increases the tensile strength of the polyimide film and realigns the stress concentrators to enhance the material properties of the film. The belt may now be placed on an arbor for injection molding of the drive pins or other further processing.

Disclosed anonymously.

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