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:
Jun. 15, 1999
Filed:
Mar. 13, 1997
Applicant:
Inventors:
Yoshiyuki Kobayashi, Kanagawa, JP;
Minoru Suzuki, Tokyo, JP;
Hideaki Nakamura, Kanagawa, JP;
Yuzuru Morioka, Kanagawa, JP;
Toshiro Ichikawa, Kanagawa, JP;
Osamu Fujita, Kanagawa, JP;
Assignee:
Unisia Jecs Corporation, Atsugi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 80 ; 310 83 ; 310 43 ; 310254 ;
Abstract
A feed-screw unit includes a rotor formed with a female screw, and a reciprocating shaft disposed inside the rotor to be moved forward and backward in the axial direction of the rotor in accordance with rotation thereof. The reciprocating shaft includes a male screw with a first portion to be in engagement with the female screw of the rotor and a second portion to be in non-engagement therewith.