Millable polyurethane-based power transmission belts, components thereof, and methods for manufacturing the same
AssigneeThe Gates Corporation
InventorsThomas S. MOSS, Charles F. OCHOA, Bobbie E. SOUTH, Patrick Joseph MCNAMEE, Amanda AYRISS, Maggie S. SACKSE, III, Carol WEBER
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Abstract
Compositions for material layers suitable for use in power transmission belts are described. The composition includes millable polyurethane, such as polyester-based millable polyurethane or polyether-based millable polyurethane, such that material layers formed from the composition are solid but pliable. The disclosed material layers can be used to form the main body portion of power transmission belts, such as synchronous belts, V-belts, and micro-V belts.
Claims20
A power transmission belt comprising a main body portion, the composition of the main body portion comprising millable polyurethane.
A method of manufacturing a power transmission belt, comprising:
- slab building a plurality of layers on a first section of a mold, wherein at least one layer in the plurality of layers comprises a layer of main body portion material, the main body portion material comprising:
- millable polyurethane;
- enclosing the plurality of layers with a second section of the mold disposed on or over the first section of the mold;
- and
- applying heat and/or pressure to the plurality of layers disposed in the mold to mold together the plurality of layers and optionally form a plurality of surface features on a top or bottom surface of the plurality of layers.
A millable polyurethane composition suitable for use in preparing a sheet of power transmission main body portion material, the composition comprising:
- a polyether- or polyester-based millable polyurethane;
- optionally, at least one additional elastomer, the additional elastomer being different from the polyether- or polyester-based millable polyurethane;
- a curing agent;
- and
- a reinforcing filler dispersed through the composition.
Dependencies are inferred from the claim text.