Gigatek Memory Systems Limited Partnership

William Y Cheung

James A Eggebeen

Balramkrishna L Talwar

A highly durable, usually hydrolytically stable, drive belt for belt-driven tape cartridges is disclosed which is a thin continuous flexible loop of at least one polyetherurethane (preferably non-hygroscopic), which is both durable and strong. Preferably the belt will be composed of a composite of two separate polyetherurethane materials, one having a higher molecular weight and longer polymer chain length than the other. Also preferably, these two polyetherurethane materials will be blended to a homogenous mixture by melting both materials and blend the molten material and forming the belt from the resulting polymeric mixture. Optionally a single polyetherurethane polymer may be used as the material comprising the belt if that single material has the requisite properties of flexibility and durability.

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Boston, MA, United States of America

William Y Cheung