Switch operating mechanism
US4103121A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1976 |
| Grant date | Jul 25, 1978 |
| Priority date | — |
| Expiry date | Mar 26, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H3/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Main contact and interrupter contact operating rods of opposed current interrupters are sequentially moved by a spring loaded operating mechanism to open the main contacts and interrupting contacts of the interrupter switches. Rotation of an input shaft trips a first overcenter toggle linkage by the engagement of a cam on a drive lever operably connected to the shaft. Tripping of the first overcenter toggle linkage allows the springs to rapidly move a main rod arm assembly connected to the main contact operating rods to open the main contacts. Rotation of the main rod arm assembly trips a second overcenter toggle linkage connected to a fast rod arm assembly permitting springs to rotate the fast rod arm assembly connected to the interrupter contact rods to open the interrupting contacts in sequence. Continued rotation of the shaft in the same direction causes abutments on the drive lever to engage the main rod arm assembly and the fast rod arm assembly to recock the mechanism for subsequent operation. The mechanism can also be tripped by an auxiliary mechanism independent of the rotation of the shaft. An indicator operably connected to the main contact rods provides a visible indica…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.