Methods of manufacturing a bullet
First Claim
1. A method of manufacturing a bullet comprising the steps of providing a slug of generally solid material having an end portion terminating in an end face, applying an impact extrusion force against the end face of sufficient magnitude to form an axially outwardly opening cavity therein in part defined by a generally undulating peripheral edge, and contouring the end portion to impart a generally convex curvature thereto while constricting the peripheral edge.
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0 Petitions
Accused Products
Abstract
A bullet is manufactured by providing a slug of metal having an end face and applying an axial force against the end face of sufficient magnitude to form an axially outwardly opening first cavity. Thereafter a second force is applied against the first cavity to reform the first cavity into a second cavity having a peripheral edge of a generally scalloped configuration and an interior surface defining tears of alternating triangular flat faces set-off by edges converging toward a blind end of the cavity. The end portion is then contoured into a generally convex curvature which constricts the scalloped peripheral edge and transforms the triangular faces into radially inwardly directed ribs and alternating lines of weakness which, upon bullet impact, control radial expansion and axial tearing of petals formed during impact which creates maximum hydraulic shock in the absence of fragmentation which in turn ensures humane killing of game.
73 Citations
44 Claims
- 1. A method of manufacturing a bullet comprising the steps of providing a slug of generally solid material having an end portion terminating in an end face, applying an impact extrusion force against the end face of sufficient magnitude to form an axially outwardly opening cavity therein in part defined by a generally undulating peripheral edge, and contouring the end portion to impart a generally convex curvature thereto while constricting the peripheral edge.
- 17. A method of manufacturing a bullet comprising the steps of providing a slug of generally solid material having an end portion terminating in an end face, applying a firsst impact extrusion force against the end face of sufficient magnitude to form an axially outwardly opening first cavity therein in part defined by an interior surface and a peripheral edge, applying a second impact extrusion force against the first cavity interior surface of sufficient magnitude to reform the first cavity into an axially outwardly opening second cavity in part defined by a generally undulating peripheral edge, and contouring the end portion to impart a generally convex curvature thereto while constricting the undulating peripheral edge.
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40. A method of manufacturing a bullet comprising the steps of providing a slug of generally solid material having an end portion terminating in an end face;
- applying force against the end face of sufficient magnitude to form an axial outwardly opening cavity therein defined by a blind end, a plurality of edges diverging away from the blind end toward a peripheral edge and a triangular surface portion between each pair of diverging edges; and
contouring the end portion to impart a generally convex curvature thereto while constricting the peripheral edge and transforming the triangular surface portions into radially inwardly directed ribs and the diverging edges into lines of weakness. - View Dependent Claims (41, 42, 43, 44)
- applying force against the end face of sufficient magnitude to form an axial outwardly opening cavity therein defined by a blind end, a plurality of edges diverging away from the blind end toward a peripheral edge and a triangular surface portion between each pair of diverging edges; and
Specification