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:
Dec. 21, 1999
Filed:
Jan. 16, 1996
Kanji Ishihara, Miyagi-ken, JP;
Alps Electric Co., Ltd., , JP;
Abstract
A rotary operation type variable resistor including a resistor base and a holder, on which a sliding-element supporting member is rotatably retained, are placed in a case provided with only one opening for component insertion. An operating lever is fixedly connected to a shaft portion of the sliding-element supporting member using a speed nut. A resistor pattern is formed by printing on the resistor base in a positional relationship determined by positioning reference portions formed on the resistor base. Positioning reference portions are also formed on the holder, and positioning portions are formed in the case. A resilient-contact member for bringing the positioning reference portions of each of the resistor base and the holder into contact with the positioning portions of the case is also provided on the case. A lower bearing made of stainless steel and formed by pressing so as to have a cylindrical portion and a flange formed at one end of the cylindrical portion is integrally combined with the holder by insert molding, while an upper bearing is press-fitted to the holder, thereby forming a bearing unit for receiving the shaft portion of the sliding-element supporting member.