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:
Mar. 05, 1991
Filed:
May. 31, 1989
Fumitoshi Masuda, Nagaokakyo, JP;
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
A variable resistor and a method for manufacturing the same is disclosed in which the variable resistor includes a casing having a bottom wall and a plurality of sidewalls extending from the bottom wall to define an opening of the casing. An insulating substrate is provided having a first surface formed along the bottom wall of the casing and a second surface opposite the first surface facing the opening of the casing. A curved resistor layer and a centrally disposed collector electrode layer are formed on the second surface of the insulating substrate. A rotor member is rotatively disposed within the casing such that its rotation axis extends through the centrally disposed collector layer. A slidable member is connected to the rotor member and is slidably connected to the curved resistor layer and the collector electrode layer for electrically connecting the curved resistor layer and the collector electrode layer. The rotor member is secured within the casing by the sidewalls which are molded to extend inwardly towards the rotational axis defined by the rotor member.