Switching circuit with lockout feature
US5627411A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 19, 1995 |
| Grant date | May 6, 1997 |
| Priority date | — |
| Expiry date | Sep 19, 2015 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/55
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrical circuit for a switch having a lockout feature is described. The circuit permits both a primary operator and an auxiliary operator to operate a bi-directional motor by activating separate low-current switches. The circuitry enables the primary operator to disable the auxiliary operator's ability to operate the motor by activating a lockout switch. With the lockout switch activated, the primary operator can operate the motor without interference from the auxiliary operator. High-current power switches, activated via logic circuitry rather than by the operators, are used to complete a power circuit for energizing the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.