Metal power transmission belt

A flexible power transmission belt especially adapted for transmitting power between pulleys such as variable pulleys in a transmission is constructed of a loop of material with closely adjacent lugs or teeth joined thereto, the lugs or teeth having a slot-like opening to receive the loop and having obliquely disposed wings which are deformed to join them to the loop. The wings are generally relatively soft whereas the toes or other parts of the teeth are generally hardened.

Composite flexible power transmission belts especially adaptable for transmitting power between pulleys, as in variable pulley transmissions, are well known in the art. We teach a belt comprising a flexible continuous member consisting of four superimposed steel strips lying on the rounded off topside of each of a plurality of V-shaped blocks made of metal, such as steel.

The superimposed steel strips are embraced by lateral portions of each V-shaped block which also have top edges preventing separation of the blocks and strip.

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