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Tension Retaining Drive Pulley

IP.com Disclosure Number: IPCOM000051468D
Original Publication Date: 1981-Jan-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 2 page(s) / 35K

Publishing Venue

IBM

Related People

Golledge, I: AUTHOR

Abstract

A drive pulley suitable for use with light loads is constructed from a number of interleaved blades radially extending from a central hub and arranged to provide a V-shaped belt-carrying groove around its circumference.

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Tension Retaining Drive Pulley

A drive pulley suitable for use with light loads is constructed from a number of interleaved blades radially extending from a central hub and arranged to provide a V-shaped belt-carrying groove around its circumference.

The pulley, shown in Fig. 1 and in through-section in Fig. 2, is produced as a single molding of metal or suitable plastics material. Two series of blades 1 and 2 radiate from each side, respectively, of a hub 3. The blades 1 of one series alternate with blades 2 of the other, and are bent inwardly to provide the V- shaped groove at their extremities for a drive belt 4. The pairs of blades are simple cantilever springs which are loaded by belt tension on initial assembly.

During use, the cooperating pairs of rotating blades 1 and 2 engage and grip the belt 4 as it enters the pulley groove. The slight zig-zag distortion of the belt around the pulley improves its grip. As the belt leaves the pulley, the blades disengage and recover their natural unloaded position.

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