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. 16, 1979
Filed:
Dec. 14, 1978
Applicant:
Inventor:
Leo Dobrjanskyj, Flushing, NY (US);
Assignee:
The Singer Company, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
B65H / ;
U.S. Cl.
CPC ...
112278 ; 200 6118 ;
Abstract
A skipped stitch detection system for a sewing machine is provided with a strain gage mounted on the slack thread regulator. The strain gage is connected in a Wheatstone bridge configuration. An amplified output from the Wheatstone bridge and timing signals from the sewing machine are provided to a microprocessor which analyzes the thread tension profile to detect the occurrence of a skipped stitch.