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:
May. 27, 2014
Filed:
Jan. 28, 2008
Applicant:
Fran Lanciaux, Grand Rapids, OH (US);
Inventor:
Fran Lanciaux, Grand Rapids, OH (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B25B 11/00 (2006.01); B23Q 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for producing a duct from a planar board having two opposed substantially parallel edges with metal foil facings on opposed major surfaces of the board is disclosed. The method comprises making planar cuts through one of the metal foil facings and at least most of the planar board there below to produce a blank with 3 parallel 'V shaped grooves which are parallel to angled edges of the blank. A duct is formed by folding the blank so that the 'V' shaped grooves form three of the edges of the duct, and the angled edges form the fourth of the edges.