发明授权
US4748441A Multiple function control member 失效
多功能控制部件

Multiple function control member
摘要:
A control member which includes two or more pivoting ball members, one seated in a housing, and the others pivotally seated within an operational control stick integral with the first ball member. Each ball member includes a plurality of contacts with leads which extend to various operational controls. Upon touching of the ball contacts with an electrical source, current is transmitted to the operational controls to perform various operations.
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