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, 1998
Filed:
May. 10, 1996
Hans Knoepfel, Roggwil, CH;
Siegfried Grueninger, St. Gallen, CH;
Spuehl AG, St. Gallen, DE;
Abstract
Described is an electronically regulated coiling apparatus for mattress and upholstery springs comprising essentially a wire draw-in, a wire guidance, a cutting device and a bending device for a wire to be processed, and due to short drive trains equipped with few transfer elements, in particular for the bending device, improved torsional rigidity and flexural strength of the particular drive train is attained. The electronically regulated servomotors used according to the invention can therefore transfer their movement directly onto the bending tools and the drive rollers by interconnecting few transfer elements. This permits bending a wire with decreased tolerances into a corresponding spring.