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:
Jan. 16, 2001
Filed:
Oct. 25, 1999
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A rotary type electronic component includes (a) a bearing formed of a cylindrical section and a substrate on which the cylindrical section is situated, (b) a rotary shaft formed of an upper section protruding from the bearing, a mid section journaled by the bearing, and a lower section having a flange with a hole which communicates with a recess formed axially in the shaft, (c) a case coupled with a lower face of the substrate so that the case covers the lower section of the shaft, and on its bottom plate having fixed contacts corresponding to movable contacts, (d) a spring housed in the recess of the shaft and biasing from inner section of the recess toward the bottom plate of the case, and (e) a frictional plate having a hole in the axial direction, engaging with a rim of recess opening, being urged by the spring against the bottom plate of the case, following the rotation of the shaft and yet moving axially and independently of the shaft. This construction allows the downsized component to keep required high torque with smooth tactile feel as well as a long service-life.