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:
Mar. 07, 2000
Filed:
Nov. 23, 1998
Frank M Grippe, Oak Creek, WI (US);
Modine Manufacturing Company, Racine, WI (US);
Abstract
A method and apparatus are provided for roll forming a plurality of fin strips (10) from a single elongated strip of sheet material (20). The strip (20) includes a pair of adjacent, longitudinal rows (22, 24) of alternating crests (26) and valleys (28), with the crests (26) and valleys (28) of the row (22) longitudinally offset from the crests (26) and valleys (28) of the other row (24) so that the two rows (22, 24) are joined by a plurality of longitudinally spaced discrete connections (30) that define a longitudinal interface (32) between the two rows (22, 24). The connections (30) are broken by displacing the two rows (22, 24) relative to each other to form a pair of fin strips (36, 38), with each fin strip (36, 38) having a side edge (40, 42) defined by the now separated interface (32).