Composite power transmission belt
OwnerJim Hammondinventor
Life of this patent
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Abstract
A composite endless power transmission belt has a resilient plastic outer tubular member with a cylindrical bore, and an inner coil spring member extending wholly and slidably within the cylindrical bore and endlessly through the bore. Assembly is by inserting the spring into the tubular member and screwing a reduced diameter end of the spring into the larger diameter spring end to form an endless belt. The lengths of both members are selected such that when uninstalled, the outer member is in compression and the inner member is in tension, yet when installed, the outer member is partially or completely decompressed and the inner member is in optimal operating tension.
Claims6
A composite endless power transmission belt, comprising a resilient plastic outer tubular member having a cylindrical bore, and an inner coil spring member extending wholly and slidably within the cylindrical bore and endlessly through the bore, such that when uninstalled, said outer tubular member is in compression and said inner coil spring member is in tension, and when installed, the inner member is in tension.
Dependencies are inferred from the claim text.