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:
Mar. 12, 1991
Filed:
Aug. 29, 1989
Omron Corporation, Kyoto, JP;
Abstract
In a planar linear pulse motor, the relative movement between the stator and the armature is positively restricted when no electric current is supplied to the drive coils by means of a lock member provided on either the armature or the stator. This lock member is attracted to a permanent magnet by its biasing magentic flux so as to be brought into contact with whichever of the armature or stator does not have the lock member on it. As a result, the armature may be locked up without consuming any electric power. If the lock member is attached to the stator or armature by means of an elastic member, the vertical dimension of the member attaching the lock member to the stator or armature can be reduced. Furthermore, the mechanical strength and the security of the engagement of the lock member to the stator or armature can be increased. As a result, the planar linear pulse motor disclosed is compact and highly reliable. In those cases when the lock member is mounted on the stator, there is no increase in the moving mass of the motor, resulting in no impairment of the rate of response of the pulse motor.