Patent ID: 8667656
Filing Date: 2014-03-11
Classification: B21D,Y10T

Abstract:
1. A punching tool for forming an attachment in an interlocking side-lapped seam of a steel deck structure, the steel deck structure including at least first and second steel deck panels, the first steel deck panel including an upturned lip along one side edge thereof, the second steel deck panel including a downwardly-directed generally U-shaped channel along one side edge thereof for receiving the upturned lip of the first steel deck panel, the U-shaped channel including first and second walls generally parallel to each other, the punching tool comprising: a. first and second jaws spaced apart from each other, each of said first and second jaws having a seam-engaging blade for engaging the first wall of the U-shaped channel; b. third, fourth and fifth jaws spaced apart from each other, the third, fourth and fifth jaws generally facing the first and second jaws, each of said third, fourth and fifth jaws having a seam-engaging blade for engaging the second wall of the U-shaped channel; c. an actuator for selectively moving the first and second jaws relative to the third, fourth and fifth jaws, said actuator being adapted to move the first and second jaws toward the third, fourth and fifth jaws to a closed position, and being adapted to move the first and second jaws away from the third, fourth and fifth jaws to an opened position; d. the first jaw being movable between the opened position spaced from the third and fourth jaws, and the closed position in which the seam-engaging blade of the first jaw passes at least partially between the seam-engaging blades of the third and fourth jaws; and e. the second jaw being movable between the opened position spaced from the fourth and fifth jaws, and the closed position in which the seam-engaging blade of the second jaw passes at least partially between the seam-engaging blades of the fourth and fifth jaws.