公开(公告)号：KR810001830B1

公开(公告)日：1981-11-16

申请号：KR770001399

申请日：1977-06-15

Applicant: MOTOROLA INC

Inventor： MARRELLA J ,  KRAJCI G

IPC: H01H19/00

Abstract: Unusualy long life and reliability in a selector switch are achieved by providing long-wearing components which, in turn, contribute to an essentially dust-free environment for the contact portions of the switch. Materials of all parts produce a min. of abrasion dust and the conformation of the housing structure provents the entry of exterior dust. A binary coded cam having multiple cam sections sliding contact between spring type contact elements and shorting bars. The rotary element and the two main housing portions are moulded of a highly wear resistant, low friction material.