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. 08, 1985
Filed:
Aug. 02, 1984
Applicant:
Inventors:
Anthony Giaimo, Staten Island, NY (US);
Robert H Larsen, Middletown, NJ (US);
Donald Rodda, Butler, NJ (US);
Assignee:
The Singer Company, Stamford, CT (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D05B / ;
U.S. Cl.
CPC ...
112254 ;
Abstract
A thread tensioning device, wherein a helical spring of varying diameter is deflected by a control knob with a defined operating range to increase tension in sewing thread moved through the device, is provided with a member which is formed to engage one or more intermediate coils of the spring while the spring is deflected more than a predetermined amount by the control knob and thereby increase thread tension obtainable over a portion of the operating range of the knob.