Belt structures for rotary electrical contact device
| DWPI Title: Rotary electrical contact device for electric machine such as motor, has belt which extends around portion of each first, second, third, and fourth sheaves such that belt makes electrical contact with each four sheaves |
| Abstract: Technologies pertaining to a rotary electrical contact device are described herein. A rotary electrical contact device comprises a first sheave that is disposed about a first axis and a second sheave that rotates about the first axis or a second axis that is parallel to the first axis. The device further includes two planetary sheaves that revolve around the first and second sheaves, and a belt that makes contact with each of the sheaves, the belt having an aspect ratio great than 1:1. As the first sheave rotates, the planetary sheaves revolve about the first and second sheaves and cause the belt to deform and roll along the second sheave. The belt makes rolling contact with the four sheaves. The belt comprises electrically conductive components arranged such that as the belt rolls along the sheaves, the belt maintains electrical contact between the first sheave and the second sheave. |
| Use: Rotary electrical contact device for electric machine such as motor (all claimed). |
| Advantage: The belt is made to have a greater bending stiffness along plane A as compared to plane B while still providing sufficient flexibility to bending along plane B to allow the belt to wrap around sheaves of a rotary electrical contact device. Inclusion of the cleats and grooves in the rotary electrical contact device enforces a no-slip condition between the belt and the sheaves, thus wear of the belt associated with sliding contact between the belt and the sheaves is avoided. |
| Novelty: The device (100) has a first sheave (102) which is arranged about a first axis (114), a second sheave (104), a third sheave, and a fourth sheave. The third sheave and the fourth sheave revolve around the first axis during operation of the device. A belt (110) extends around a portion of each of the first, second, third, and fourth sheaves such that the belt makes electrical contact with each of the four sheaves. The belt has an aspect ratio greater than 1:1. |
| Filed: 5/23/2019 |
| Application Number: US16420697A |
| Tech ID: SD 14858.0 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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