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:
Mar. 10, 1992
Filed:
Oct. 31, 1990
Applicant:
Inventors:
Takao Date, Shizuoka, JP;
Isao Wakamiya, Shizuoka, JP;
Assignee:
Toshiba Kikai Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
74 8915 ; 192141 ; 192146 ;
Abstract
In apparatus for controlling a rapid feed speed of a movable body, for example a table of a machine tool, by using a ball screw, there are provided a converting device for converting the rotation of the ball screw into a force for reciprocating the table, a position detector which judges whether a nut of the ball screw is at an end of the movement of the nut or at a central portion of the movement for issuing a detection signal and a speed reducing device which reduces the number of revolutions of the ball screw when the detection signal is issued.