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:
Sep. 07, 1999
Filed:
Nov. 10, 1997
Katsuhiro Nanba, Okazaki, JP;
Minolta Co., Ltd., Osaka, JP;
Abstract
A linear drive device comprising a shaft extending in a predetermined direction and provided with a field magnet having N- and S-type magnetic poles; and a movable piece having an armature coil fitted around the shaft and opposed to the field magnet for generating a thrust when energized, being reciprocatable along the shaft, and connected to one end of a driven object, wherein thrusts generated by the armature coil at opposite sides of the shaft are determined such that the thrust generated at the side near the driven object is larger than the thrust generated at the side remote from the driven object. A linear drive device comprising a guide member; a movable piece engaged with the guide member for reciprocation along the guide member; and a sensor arranged on the movable piece for reading information on the guide member, wherein the sensor arranged on the movable piece is located substantially at a center of a yawing or pitching motion of the movable piece.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile