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:
Feb. 03, 2004
Filed:
May. 28, 2003
Applicant:
Inventors:
Assignee:
Dürkopp Adler Aktiengesellschaft, Bielefeld, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D05B 3/06 ; D05B 3/706 ;
U.S. Cl.
CPC ...
D05B 3/06 ; D05B 3/706 ;
Abstract
A buttonhole sewing machine comprises a buttonhole cutting device which includes a knife and at least one cutting block that cooperates with the knife. Provision is made for a cutting drive for motion of the knife and the cutting block relative to each other by variable cutting force, the cutting drive comprising several linear drives which are connected in parallel and pneumatically actuated selectively.