End switch for a shaft driven through a large angle of rotation
US4238021A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 16, 1978 |
| Grant date | Dec 9, 1980 |
| Priority date | — |
| Expiry date | Mar 16, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H3/58
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An end switch for use with a shaft and a drive which drives the shaft through a relatively large number of 360.degree. angular rotations associated with an end position wherein the end switch is provided with a switching member and with a spindle drive means responsive to the drive for causing an end face of the switching member to be brought into engagement with a contact of a stationary switch at the end of the rotation of the shaft. In accordance with the invention, the spindle drive means moves the switching member axially thereto during a first portion of the shaft rotation and tangentially thereto during the remaining portion of the shaft rotation, the former portion being larger than the latter portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.