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. 01, 1998
Filed:
Mar. 31, 1997
Applicant:
Inventor:
Kazuhiro Sekiguchi, Saitama, JP;
Assignees:
Akebono Brake Industry Co. Ltd., Tokyo, JP;
Akebono Research and Development Centre, Ltd., Saitama, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 / ; 310 80 ; 318115 ;
Abstract
A light-weight and small-size electric motor in which linear movement can be obtained without requiring any special movement conversion mechanism. The electric motor includes a rotor (4), a rotary shaft (5, 6, 5a) coupled to the rotor (4), and a screw mechanism (7) for Supporting the rotary shaft (5, 6, 5a), the screw mechanism (7) being configured such that the rotor (4) is moved in an axial direction of the rotary shaft (5, 6, 5a) by movement of the rotary shaft (5, 6, 5a) within the screw mechanism (7) upon rotation of the rotor (4).