Rotary vacuum-electric switch
US5495868A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 30, 1994 |
| Grant date | Mar 5, 1996 |
| Priority date | — |
| Expiry date | Dec 30, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86879
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A shaft is rotatable in a housing to several detented positions, established by a detent wheel and spring pressed detent balls, and is provided with a pinion gear which drives a gear rack on a valve carriage guided for linear movement along a spacer. A rubber valve on the carriage is movable across vacuum valve ports to perform vacuum switching functions. A bearing on the carriage moves along a slot in the spacer and carries an idler gear which rolls along a gear rack on the housing and drives a gear rack on an electrical carriage, slidable along the spacer. Fan and clutch contactors are movable with the electrical carriage across fixed contacts to perform electrical switching functions. The detent balls and springs can be inserted through access slots from outside the housing. The housing has two mounting members with latching hooks projecting forwardly for insertion into slots in a supporting panel. A boss on the housing around the shaft is insertable into an opening in the panel. The location of the boss forms a triangle with the locations of the hooks, whereby rotation of the housing on the panel is prevented. The hooks are located and configured to afford a tight interference …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.