Tool for removing dents from sheet metal
First Claim
1. A tool for pulling a dent within a sheet metal surface into a plane which is generally in alignment with the surrounding sheet-metal surface, the tool including:
- a) a support post with a foot with a face surface which is shaped to rest against an adjacent generally planar area of a sheet metal surface lying laterally to the dent;
b) a hinged lever arm which is pivotally connected to this support post at a lever arm pivot which is elevated above the foot;
c) a pulling rod for coupling, through a connecting means, to a dented portion of the sheet-metal surface which is to be drawn-out, the pulling rod being connected to the hinged lever arm through a pulling rod pivoting joint, wherein the lever arm pivot and pulling rod pivoting joint are positionable during operation to lie in a common plane which is substantially parallel to the plane into which the sheet-metal of the dent is to be pulled.
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Accused Products
Abstract
A tool for pulling a dent out of a sheet metal surface has a support post with a foot shaped to rest against a portion of the sheet metal surface adjacent the dent. The tool includes a hinged lever arm which is pivotally connected to this support post at a lever arm pivot point which is elevated above the foot and adjacent sheet metal region. The tool also includes a pulling rod for coupling, through a fastener or connecting means, to the dented portion of the surface which is to be drawn-out, the pulling rod being connected to the hinged lever arm through a pivoting joint. The pivoting joint of the pulling rod and the lever arm pivoting point are positionable through actuation of the lever arm able to lie in a common plane which is substantially parallel to the sheet metal surface into which the dent is to be drawn into alignment. The pulling rod is adjustable in its engagement with the lever arm to permit the lever arm to swing through a limited angular range. Coupling between the pulling rod and lever arm is either discrete or continuous. Fasting means connecting the tool to the sheet metal include a self-tapping, self-drilling screw or a bolt provided with a magnetic washer or magnetic head.
4 Citations
24 Claims
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1. A tool for pulling a dent within a sheet metal surface into a plane which is generally in alignment with the surrounding sheet-metal surface, the tool including:
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a) a support post with a foot with a face surface which is shaped to rest against an adjacent generally planar area of a sheet metal surface lying laterally to the dent;
b) a hinged lever arm which is pivotally connected to this support post at a lever arm pivot which is elevated above the foot;
c) a pulling rod for coupling, through a connecting means, to a dented portion of the sheet-metal surface which is to be drawn-out, the pulling rod being connected to the hinged lever arm through a pulling rod pivoting joint, wherein the lever arm pivot and pulling rod pivoting joint are positionable during operation to lie in a common plane which is substantially parallel to the plane into which the sheet-metal of the dent is to be pulled. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 19, 20)
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16. A threaded sheet metal fastener having a central shaft comprising:
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a) a threaded portion;
b) a seating shoulder to limit the penetration of the threaded portion of the post into sheet metal;
c) a necked-in region on said shaft to provide an engagement surface on the side of the shoulder remote from the threaded portion;
d) a larger terminating end connected to the necked-in region on the side remote from the threaded portion to provide an engagement shoulder for engaging the fastener, and e) a self-drilling tip at the end of the threaded portion. - View Dependent Claims (17, 18)
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- 21. A welding fastener means in the form of sheet-metal plate having an opening form therein for engagement by-hooked coupling mean, said sheet-metal comprising a lower edge for welding to the surface of sheet-metal.
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23. A coupling means for engaging two or more welding pins for attachment by welding to sheet metal, said welding pins each having ends and said coupling means comprising:
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a) multiple openings to receive the ends of said two or more welding pins; and
b) locking means for securing the ends of the welding pins into the coupling. - View Dependent Claims (24)
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Specification