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:
Sep. 10, 1985
Filed:
Oct. 16, 1984
Applicant:
Inventor:
Kurt Klundt, Hirschhorn, DE;
Assignee:
G.M. Pfaff AG, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D05B / ;
U.S. Cl.
CPC ...
112221 ; 74591 ; 74604 ;
Abstract
The needle bar drive of a counterbalanced sewing machine comprises, in addition to a counterbalance weight connected to the driving crank, a second counterbalance weight which is driven in opposition thereto through a drive mechanism. The drive mechanism comprises an intermediate shaft which rotates at a double speed relative to the armshaft and carries and drives a third counterbalance weight.