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:
Sep. 24, 2002
Filed:
Nov. 03, 2000
Applicant:
Inventors:
Isamu Yoshida, Iwata, JP;
Yoshinori Ikeda, Iwata, JP;
Assignee:
NTN Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B62D 5/04 ;
U.S. Cl.
CPC ...
B62D 5/04 ;
Abstract
A ball screw ( ) includes a bridge member ( ) fitted to a rotary nut ( ) and provided with a plurality of connecting grooves ( ). Each connecting groove ( ) connects neighboring convolutions of an inner spiral groove ( ) of the rotary nut ( ). The ball screw ( ) is used as a mechanism for transmitting rotation of a rotor ( ) of a motor ( ) to a steering shaft ( )in an electrically powered steering device.