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:
Dec. 18, 2000
Filed:
Oct. 06, 1998
SMC Kabushiki Kaisha, Tokyo, JP;
Abstract
Rotary motion of a motor of an electric actuator is converted into rectilinear motion with a small sliding resistance by the aid of a ball screw and a feed nut. On the other hand, a control apparatus for controlling the electric actuator comprises memory groups composed of memories to indicate displacement positions of a displacement member. The memory groups include a starting point memory. If a controller selects the starting point memory, the control apparatus displaces the displacement member to a starting point position. Therefore, it is unnecessary to provide any dedicated signal line for displacing the displacement member to the starting point position. It is possible to decrease the number of signal lines connected to the control apparatus.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile