Method of operation of motor multiple switches and circuitry
US5483029A · kind A · utility
Inventors
Key dates
| Filing date | Dec 18, 1992 |
| Grant date | Jan 9, 1996 |
| Priority date | — |
| Expiry date | Dec 18, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H9/281
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for combining the operation of the electrical disconnecting safety switch of an electric motor within the motor's electrical terminal housing. This method of operation results in a single, compact housing directly mounted to the electric motor body which is used for both the safety disconnect function as well as the termination point for the incoming power leads and the motor wire taps. This method of operation may be employed for single phase and three phase alternating current motors as well as commonly wired direct current motors. The method further provides for a simple and economical way of mounting the device to a variety of motor frames with the use of appropriate adapter plates. The incorporated motor safety disconnect function is available in either of two configurations. The disconnect function may be operated as a rotary tumbler switch with an external rotary hand operator which allows a fully weatherproof design. The disconnect function may also be operated as a draw-out, or plug type, disconnecting switch which allows more economical manufacture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.