Abstract: A seam for ductwork has a male end portion integrally formed at a distal end of a duct wall and a female end portion integrally formed at another distal end of the duct wall. The female end portion includes a first fold and a second fold, which define a female groove for accommodating the male portion. A distal end of the second fold is bent transverse to the female groove prior to the male portion being inserted into the female groove.
Type:
Grant
Filed:
February 2, 2010
Date of Patent:
June 11, 2013
Assignee:
Met-Coil System Corp.
Inventors:
John J. Toben, Ashok M. Shah, Richard F. Blum, Michael C. Borwig
Abstract: An integral metal spacer for insulated glass units and method of fabricating the spacer. The spacer defines a substantially closed cross-section contour having a bottom surface, a pair of sidewalls, and a pair of generally abutting inner surfaces. A gap may be defined between the adjacent inner surfaces. The three interior corners are defined by fully mitered sidewalls. A pair of bridges are provided to integrally interconnect the inner surfaces of adjacent spacer segments. The method of fabricating includes taking a roll of flat metal stock and completely punching all corner and other structures therein while the stock is planar; severing the punched stock into individual spacer members; roll-forming the individual members into a finished linear spacer piece; applying desiccant during roll-forming; applying sealant; thereafter folding the elongate member into a square spacer thereby locking the desiccant therein.
Type:
Grant
Filed:
January 21, 2000
Date of Patent:
August 28, 2001
Assignee:
Met-Coil Systems Corp.
Inventors:
Ashok Shah, Richard Blum, Gary Dickinson