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:
Aug. 24, 1976
Filed:
Oct. 30, 1974
Applicant:
Inventors:
John Wesley Allen, Hudson, OH (US);
William P Waiwood, Parma, OH (US);
Assignee:
The Singer Company, New York, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D05B / ; D05B / ;
U.S. Cl.
CPC ...
1121 / ; 336 30 ; 336135 ; 11212111 ;
Abstract
A sewing machine is disclosed having electromechanical actuators for controlling the stitch forming instrumentalities in the formation of stitch patterns with a non-contact position sensing device associated with each electromechanical actuator comprising spaced coils and a metallic shunt plate arranged adjacent and shiftable relatively to the coils in response to movement of the actuator to produce a measureable variation in the inductance of the coils which bears an advantageous linear relationship to the electromechanical actuator position.