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:
Nov. 19, 1991
Filed:
Feb. 05, 1991
Applicant:
Inventors:
Tetuyuki Ueda, Nara, JP;
Masayoshi Tsunezawa, Sakai, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02K / ;
U.S. Cl.
CPC ...
318135 ; 310 12 ;
Abstract
A linear driving apparatus using two units of linear motors each having rotors being coupled to each other which are suitable to provide high accuracy for the positioning control and the speed control. The first and second linear motors, which, are coupled in shape by the coupling member are not controlled independently and the impellent force, to the first and second linear motors are equal. Thereby, construction of the apparatus is considerably simplified, and the positional contol and the speed control is highly accurate.