Combination rotary electrical switch and vacuum selector valve
US4679588A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1985 |
| Grant date | Jul 14, 1987 |
| Priority date | — |
| Expiry date | Nov 21, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8376
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A single rotary shaft connected to a single rotary carriage operates a vacuum selector valve and two rotary electrical switches, in a casing having rear and front components. The valve comprises a valve carriage, slidable along a linear channel in the rear component. A gear rack on the valve carriage meshes with a pinion gear on the rotary carriage. The valve carriage is slidably retained in the valve channel by the switch contact plates of the first rotary switch. Such contact plates have terminal portions retained between the front and rear casing components. The contactors of the two switches face in opposite directions on the rotary carriage and are biased by a single coil spring, insulated from one of the contactors by a cup-shaped insulating member. The contact plates of the second switch are mounted on the front casing component and have terminals extending outside of the rear casing component through slots therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.