Industry Patents
Patent: 12110217
Chain Motor Power Distribution and Control
(Click image for PDF of full patent)
| Patent Number: |
12110217 |
| Title: |
Chain Motor Power Distribution and Control |
| Abstract: |
Units for distributing three-phase power to a plurality of chain motors are provided, as are used to raise and suspend production elements such as lighting, sound, video, and scenery. Remote switching and phase reversal of such power are also provided. In the prior art, such switching has been performed by large, heavy contactors inserted between the single power input and its distribution to plural outputs for motors, making the unit difficult to handle and ship. Provided herein are power switching and phase reversal performed by a plurality of parallel such means, reducing the current requirements for each, and thereby the size, weight, and cost of the whole. In some embodiments, the single power input is replaced by a by a cable delivering a plurality of two-phase circuits to the unit which derives the three-phase circuits necessary for chain motors therefrom. |
| Country of Issue: |
US |
| First Named Inventor: |
Callahan |
| Assignee: |
|
| Continuation or Divisional of: |
11359374 |
| International Classification: |
H02P 27/04 |
| US Classification: |
B66D 1/12 |
| Issue Date: |
10-08-2024 |
| Filing Date: |
05-23-2022 |
| Application : |
17/750541 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
12110217 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
12110217 at Google Patents |
1. The Google Patents and World Patent Family links will likely not work until a few weeks
after the patent has issued - they take a while to get new patents in their systems.
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