US Patent 7439835 Rotary selector

A rotary selector as display console for contact-free on and off switching as well as for switching of the automatic control of a number of different cycles of electronically operated domestic applicances, such as washing machines, dryers, dishwashers or comparable units. The rotary selector (1) has mutually communicating catch devices and a plate arranged at a distance thereto with a rotary field sensor acording to Hall technology, whereby spring-loaded ball lockings enable defined and switchable rotation of an operating element (2) with magnetic device in ranges up to 360°, and whereby angle-dependent variables for control of a wide range of cycles are generated in a known manner in the rotary field sensor.