The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 25, 1995
Filed:
Sep. 17, 1993
Seiki Katakami, Isesaki, JP;
Hosiden Corporation, Osaka, JP;
Abstract
A plurality of contacts for rotary switches are concentrically formed on a printed circuit board accommodated in a case. A fixed cylinder is disposed opposite to the concentric arrangement of the contacts. A rotary shaft of a first rotary knob pierces through and supports the fixed cylinder so as to drive slidable contact pieces for a first rotary switch. A rotary cylinder which functions as a rotary shaft of a second rotary knob is fitted to the outer periphery of the fixed cylinder so as to drive slidable contact pieces for a second rotary switch. Spring coils for the first and second rotary knobs are mounted on the fixed cylinder. The spring coils provide the first and second rotary knobs with tensions for their rotation reference positions. Thus, the positions of slidable contact pieces of the rotary switches are elastically maintained to their reference angle positions.