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:
Feb. 15, 2011
Filed:
Feb. 08, 2007
Masaki Tomaru, Gunma, JP;
Yuuichi Tomaru, Gunma, JP;
Kouhei Yonezawa, Gunma, JP;
Naoki Sawada, Gunma, JP;
Masaki Tomaru, Gunma, JP;
Yuuichi Tomaru, Gunma, JP;
Kouhei Yonezawa, Gunma, JP;
Naoki Sawada, Gunma, JP;
NSK Ltd., Tokyo, JP;
Abstract
When a columnreaches a tilting ascent end, the lower endof a nutabuts on the buffering segmentof a buffer. Thus, while the buffering segmentof the bufferis elastically deformed, the nutstops with no impact. Accordingly, the inertia when the nutstops is restrained and the tightening torque of the nutwhen the nutstops is also restrained. For this reason, when an electric motoris rotationally driven in a reverse direction, a feeding screw shaftrotates in the reverse direction with the normal rotation torque of the electric motor. Thus, the nutis caused to ascend in the axial direction along the screw segment of the feeding screw shaftso that the columncan be tiltingly moved downward.