Protective switch
US5339060A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 1993 |
| Grant date | Aug 16, 1994 |
| Priority date | — |
| Expiry date | May 24, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H89/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A protective switch device such as a relay switch includes at least one pole having at least one moving contact that cooperates with a stationary contact and a magnetic or thermal trip mechanism for assuring protection against overloads and excess currents and that acts on a control mechanism actuating the moving contact and that can be activated by a rotary control knob rotating about a pivot pin. Recocking of the control mechanism is possible from a "tripped" to an "off" or from a "tripped" to an "on" position. The control mechanism includes a lever for opening the contacts that pivots from an on position corresponding to the closing of the contacts to a position corresponding to the opening of the contacts. The opening lever is associated with a pivoting cocking mechanism, which is able to bring back and hold the opening lever in the on position. A trip mechanism is provided which is able to control the mechanical separation of the opening lever and the cocking mechanism so as to free the opening lever.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.