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:
Oct. 04, 2011
Filed:
May. 28, 2007
Noboru Tanaka, Tokyo, JP;
Noboru Tanaka, Tokyo, JP;
Ito Co., Ltd., Tokyo, JP;
Abstract
In the traction apparatus, a control circuit has the following traction control process portions. First, a first traction control process portion winds up the slack portion of a wire by a motor to eliminate the slack of the wire connected to a body to be pulled. Next, a second traction control process portion converts a set traction force that is set by an operation portion to a traction amount to calculate a converted value and, by defining a predetermined amount of a traction amount set based on the converted value as an initial target value, continuously winds up the wire by the motor to that target value. Next, a third traction control process portion detects the traction force that is being applied to the body to be pulled by a load cell, calculates a drive stop time of the motor by defining the set traction force as a final target value on the basis of a detected output of the load cell and drives the drive mechanism, and stops the driving of the motor at a point of reaching the drive stop time.