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:
Jul. 04, 1978
Filed:
May. 17, 1977
Applicant:
Inventors:
Alfred Rolf Suchsland, Morris Plains, NJ (US);
Raymond Steven Tyburcy, Middletown, NJ (US);
Charles Robert Odermann, Montville, NJ (US);
Assignee:
The Singer Company, New York, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D05B / ;
U.S. Cl.
CPC ...
112220 ; 112277 ;
Abstract
A sewing machine motor speed regulating system which provides two speed ranges which, in turn, have independently controllable maximum attainable speed adjust. This is accomplished by selectively exciting one of two variable trim resistors serially inserted in the silicon controlled rectifier gate/controller circuit.