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:
Nov. 09, 1999
Filed:
May. 29, 1998
Fumitoshi Masuda, Fukui-ken, JP;
Murata Manufacturing Co., Ltd., Nagaokakyo, JP;
Abstract
A variable resistor reduces an inclination of a rotor caused by spring reaction of a slider, and prevents the lowering of contact pressure and deterioration in sliding performance of the slider. The resistor includes a rotor 3 and a slider 4 inside a case 1. The variable resistor also includes a resistor substrate 2 having a collector electrode 25 at a central portion of a surface thereof and having a resistive element 24 in a circular arc shape on an outer side of the collector electrode 25 substantially concentric with the central portion. The resistor substrate 2 is mounted to a lower end portion of the case 1. The slider 4 is provided with a first arm 42 having a substantially U-like shape at one end side of a base portion 41 attached to the rotor 3, having a first contact point portion 42a at a front end of the first arm which is brought into sliding contact with the resistive element 24 in the circular arc shape. The slider 4 is also provided with a second arm 43 and a second contact point portion 43a at a front end of the second arm which is brought into contact with the collector electrode. The arms are bent in directions opposed to each other, wherein the slider 4 is formed such that the first contact point portion 42a is disposed on the inner side of base portion 41 from a folded-bent portion 43b of the second arm 43, and the second contact point portion 43a is disposed on the inner side of the base portion 41 from a folded-bent portion 42b of the first arm 42. The second contact point portion 43a is folded back to the side of the resistor substrate 2.