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:
Dec. 05, 1995
Filed:
Oct. 26, 1993
Takayuki Wakana, Aichi, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A sewing machine apparatus driven by a motor, which is subject to velocity control on the basis of a detector for determining the rotary position and/or velocity of the motor output shaft. A controller is operative to control the speed of the motor in accordance with a velocity command value. A means for generating a holding force during a stop of the sewing machine ensures that the sewing needle does not provide unwanted movement. The holding force is changed when movement from the stop position is desired, as by changing the force in relation to the speed or amount of movement. This feature is particularly useful to reduce the load presented to an operator who wishes to manually change the machine position.