Miniaturized solenoid operated trip device
US5343179A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 1993 |
| Grant date | Aug 30, 1994 |
| Priority date | — |
| Expiry date | Jan 29, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2083/205
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A solenoid operated circuit breaker trip device has a base defining a guide channel and an actuator that slides in the guide channel and interacts with a contact breaking mechanism having a trip bar operable to make or break electrical contacts. A spring biases the actuator toward the trip bar. A solenoid on the base electromagnetically displaces a plunger along a linear path and is coupled to a trigger having a latching surface that holds or releases the actuator. The guide channel runs parallel to the path of the plunger, adjacent the solenoid. The trigger is L-shaped and pivoted on a pivot pin between two legs of its L-shape, on an axis transverse to the path of the plunger. One of the two trigger legs is coupled to the plunger, and the other has an engagement surface that is moved behind a complementary surface of the actuator to selectively block its displacement. The base can be a slotted frame attached to the solenoid or a molded housing having an interior cavity for receiving the solenoid. A return spring urges the trigger toward the latching position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.