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:
Nov. 16, 2010
Filed:
Apr. 18, 2008
Applicant:
Kelly M. Knewtson, Joplin, MO (US);
Inventor:
Kelly M. Knewtson, Joplin, MO (US);
Assignee:
L&P Property Management Company, South Gate, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D 31/00 (2006.01); B21F 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and apparatus is disclosed for manufacturing sinuous springs wherein each spring comprises a discrete length of sinuous spring wire having parallel straight bar segments interconnected at their opposite ends by oppositely directed curved connecting segments. This apparatus is operable to adjust the length of the sinuous spring wires exiting the machine without turning off or stopping the machine. An operator need only rotate a handle outside a housing of the machine to increase or decrease the length of the sinuous spring wires exiting the machine.