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US 4,017,048 AGranted
Method of forming a push pin article and articles produced by the method
AssigneeCoats & Clark, Inc.
InventorRuediger Einhorn
Life of this patent
Estimating the term…
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AssigneeCoats & Clark, Inc.
InventorRuediger Einhorn
Estimating the term…
A base member of a push pin is formed by casting or molding, and a pin is inserted pointed end first into a hole in the base member and forced through the base member until the end opposite thereof lies below the surface of the base member. The material of the base member is then flowed over the end of the pin, by mechanical or heat techniques, to form a substantially complete layer over the end of the pin within the base member. The pins preferably extend at an acute angle to a flat surface of the base member. The push pin may have pins extending from opposite surfaces thereof, a loop shaped projection adapted to be affixed to a wire, or a hinge separating the base member into a hook portion and a portion carrying one or more pins. The push pin may have a contoured base member to facilitate the affixing of a picture wire to a hook formed on the base member. In another embodiment the push pin has a projection on the side thereof through which the pin extends, the projection having a rounded contour adjacent the pin, a radially outer surface, and an intermediate axially extending section between the rounded surface and the radially outer portion. The push pin may be formed with a pivoted lever, to serve as a wire clamp. For picture hanging purposes, the push pin may include a pair of pins extending from opposite sides of an elongated member and through projections, the elongated member having a saw tooth edge, with the planes of the saw tooth edge and the side of the elongated member adjacent thereto extending at an angle corresponding to portions of a nail extending at an angle in the wall, in order to facilitate the hanging of a picture on the wall.
A push pin hanger for supporting an object on a supporting surface comprising a rigid base having first and second opposite surfaces, said first surface conforming to said supporting surface, a first pin rigidly mounted in said base and extending from said first surface at an acute angle thereto in a plane normal to said first surface, and a second pin rigidly mounted in said base and extending from said second surface in said plane at an acute angle to said first surface, whereby the direction of extension of said second pin intersects said first surface at a point spaced from said first pin, the ends of said first and second pins away from said base being directed in opposite directions with respect to said base and being pointed for insertion in said supporting surface and said object respectively.
A mounting device adapted to suspend an article on a wall, comprising a base portion having a flat surface, hinge means having a hinge axis parallel to said flat surface and separating said base portion into first and second portions pivoted together at said hinge means, a hook extending from said first portion away from said flat surface, and means for mounting said second portion to a wall.
A push pin hook for suspending an object by means of a wire comprising a unitary base having a base portion with flat mounting surfaces and a contoured surface opposite said flat surface and a hook portion projecting from said contoured surface of said base portion, the projection of the end of said hook portion away from said contoured surface on said flat portion, in a first plane normal to said flat surface, being spaced in a given direction from the projection of the junction of said hook and base portions on said flat surface in said first plane, said contoured surface, when viewed normal to said first plane, having a smooth contour extending continuously in said direction from said hook portion to said flat portion at the edge of said base portion most remote from said junction, a pin having a blunt end completely embedded in and rigidly held by said base portion and a pointed end extending from said flat surface at an obtuse angle to said direction for holding said push pin hook on a wall with said flat mounting surface engaging said wall, said pin intersecting said flat surface at a point in a second plane normal to said flat surface and first plane, said second plane intersecting said first plane between said edge of said base member and said end of said hook portion, whereby, upon sliding of said wire along said wall in a direction opposite said given direction, said contoured surface smoothly guides said wire into engagement with said hook portion.
A push pin article comprising a metallic base member having a flat wall engaging surface and a surface opposite said flat surface, and a pin having a blunt end completely embedded in and fixedly held by said base member and a pointed end extending through said flat surface, the axis of said pin extending through said opposite surface, and a layer of the material of said base member flowed substantially completely over said blunt end of said pin, said layer forming a convex projection on said opposite surface, said projection being aligned with said pin.
A push pin hanger for supporting an object on a supporting surface, comprising a rigid base having a first substantially flat mounting surface and a second surface opposite said first surface, a first pin having one end rigidly embedded in said base and the other end extending from said first surface at an acute angle thereto, and a second pin having one end rigidly embedded in said base and the other end extending from said second surface, the direction of extension of said second pin intersecting said first surface at a point spaced from said first pin, said other ends of said first and second pins extending in opposite directions away from said base and being pointed for insertion in said supporting surface and said object respectively, said first and second pins extending in parallel directions.
Dependencies are inferred from the claim text.