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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.:

US 6738340 B1

PDFFull Text
Expired
Date of Patent:
May. 18, 2004

Filed:

Oct. 02, 2001

Device for reducing the radial and axial play of a motor shaft in a deck for playing information discs

Applicant:
Inventors:

Christian Hopf, Wetzlar, DE;

Norbert Kunze, Diez, DE;

Stefan Mueller, Wetzlar, DE;

Horst Rumpf, Herborn, DE;

Cornelius Wouters, Kuringen, BE;

Assignee:

Koninklijke Philips Electronics N.V., Eindhoven, NL;

Attorney:

Michael E. Belk

Primary Examiner:

Julie Anne Watko

Int. Cl.
CPC ...
G11B 2/300 ; G11B 2/500 ; H02K 5/24 ; H02K 4/902 ; H02P 1/500 ;
U.S. Cl.
CPC ...
G11B 2/300 ; G11B 2/500 ; H02K 5/24 ; H02K 4/902 ; H02P 1/500 ;
Abstract

The invention relates to a device in a deck for playing information discs ( ), which preferably have been provided or can be provided with digital information, the information disc ( ) being rotated, in the operating condition, about its center by a drive motor ( ) and magnetically cooperating material parts ( ) being present, which are offset radially with respect to the axis of rotation ( ) and in the direction thereof parallel with respect to one another and of which one part ( ) is disposed on the base plate ( ) which carries the motor ( ) and of which the other part ( ) is disposed on the disc support ( ) which is moved by the motor shaft ( ), one of the material parts ( ) being a ring-shaped permanent magnet, at least one of the two magnetically cooperating material parts ( ) being arranged eccentrically with respect to the axis of rotation ( ) and both material parts ( ) are ring-shaped, the directions of the lines of field not being changed during rotation.

Find Patent Forward Citations

Hopf, Christian. (2004). Device for reducing the radial and axial play of a motor shaft in a deck for playing information discs (U.S. Patent No. 6738340). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6738340

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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