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. 19, 1989
Filed:
Sep. 08, 1988
Roberto Sabbioni, Novara, IT;
Massimo Sormani, Milan, IT;
Rockwell-Rimoldi, S.p.A., Milan, IT;
Abstract
The invention herein described comprises a programmable microprocessor control unit 2 controlling a plurality of actuators 6, 7, 8, 9, 10, respectively associated with the differential feed dog, main feed dog and upper feed dog and/or with the presser foot and the tension group of an industrial sewing machine 5. On the basis of the adjustment parameters keyed-in in said control unit, each actuator individually causes the adjustment of the movements of each feed dog, of the pressure exerted by the presser foot and of the force causing the dish-shaped elements of the tension group to be moved close to each other to retain the threads interposed therebetween.