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. 14, 1976
Filed:
Apr. 09, 1975
Applicant:
Inventor:
Nereo Bianchi, Pavia, I;
Assignee:
Necchi S.p.A., Pavia, I;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D05B / ;
U.S. Cl.
CPC ...
112254 ;
Abstract
A device for automatic tension release in an upper thread tension adjusting assembly which includes a drive shaft, actuating the detachment of the tension disks of said adjusting device, characterized in that said drive member is built in the thread tension adjusting device and is made by an electromagnet placed in a circular crown arranged between the tension disks and the adjusting knob.