Belt drive
First Claim
1. In a belt drive, an input pulley, an output pulley spaced therefrom, a pair of belts one outside of the other, both belts operating within the width of one of the belts, the outer belt going around both pulleys with the input pulley being between the belts so that it is outside of the inner belt, and an idler pulley arrangement, including at least one movable idler pulley, constructed and arranged to tension either one belt or the other against the input pulley so that one belt drives the output pulley in one direction and the other belt drives it in the other direction.
1 Assignment
0 Petitions
Accused Products
Abstract
This is a belt drive arrangement in which two belts are used, the inside surface of one running in contact with the outside surface of the other for part of their lengths and both running within the width of one belt, with input and output shafts, and one or more idler pulleys providing forward or reverse rotation of the output shaft with the input shaft having a constant direction of rotation.
41 Citations
18 Claims
- 1. In a belt drive, an input pulley, an output pulley spaced therefrom, a pair of belts one outside of the other, both belts operating within the width of one of the belts, the outer belt going around both pulleys with the input pulley being between the belts so that it is outside of the inner belt, and an idler pulley arrangement, including at least one movable idler pulley, constructed and arranged to tension either one belt or the other against the input pulley so that one belt drives the output pulley in one direction and the other belt drives it in the other direction.
- 9. In a belt drive, a pair of belts, one inside of the other, a driver pulley between the belts so that it is outside of the inside belt and inside of the outside belt, a driven pulley spaced from the driver pulley and inside of both belts, and a movably mounted idler arranged to alternately tension one belt or the other but not both against the driver pulley so that the driven pulley will be rotated clockwise when one belt is tensioned against it and counterclockwise when the other belt is tensioned against it.
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18. In a belt drive, an input pulley, an output pulley spaced therefrom, a pair of belts with the inside surface of one running in contact with the outside surface of the other for part of their lengths and operating within the width of one of the belts, and an idler pulley arrangement constructed and arranged to tension either one belt or the other against the input pulley so that one belt drives the output pulley in one direction and the other belt drives it in the other direction.
Specification