Arrowhead with expandable blades
First Claim
1. An expandable head for a hunting arrow comprising:
- (a) a first elongate member having a rear end adapted to he attached to the front end of an arrow shaft, and having a longitudinally extending forward portion;
(b) second elongate member having a pointed front end and a rearwardly extending portion that is adapted to slidably connect to said forward portion of said first member for axial movement relative to said first member, from a forward position to a rearward position;
(c) a first and at least a second blade each of said blades having its front end pivotally connected to said second elongate member;
(d) a first and at least a second linking arms, each said arm having a rear end pivotally connected to said first elongate member, and said first and second linking arms having forward ends that pivotally attach respectively to said first and second blades, at a connection point on each said blade that is spaced from the front end of said blade;
(e) means, operative between the forwardly extending portion of said first elongate member and the rearwardly extending portion of said second member, for exerting a predetermined static frictional force for holding said first and said second members against relative sliding movement; and
(f) wherein said first and second blades have a retracted configuration in which said blades lie slightly divergent with respect to each other and said second member lying in its forward position relative to said first member when said blades are retracted, and wherein when said second member is urged toward its rearward position by forces of impact of said second member with a target said blades are caused to rotate to an extended, more divergent configuration.
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Accused Products
Abstract
An expandable broadhead for a hunting arrow includes a first elongate member having a rear end adapted to be releasably attached to the front end of an arrow shaft and a longitudinally extending forward portion. There is a second elongate member that has a tipped front end and a rearwardly extending portion adapted to slidably connect with the longitudinally extending forward portion of the first member, and for guiding the second member in axial movement relative to the first member from a forward position to a rearward position. Each of a pair of blades with sharpened outer edges has a front end that is pivotally connected to the second elongate member. There is a pair of linking arms, each arm having a rear end that is pivotally connected to the first elongate member and a forward end that pivotally connects with a blade at a point therealong spaced from the front end of the blade. The arrowhead has a first configuration in which the blades are retracted in a low-profile aerodynamic configuration, and in which the second elongate member is in its forward position. When the tipped portion of the second elongate member makes impact with a target, the aforedescribed construction will allow force of impact to move the second elongate member towards the first elongate member and to urge outwardly the connection point of each linking arm and blade to move the blades to an extended, divergent configuration.
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Citations
19 Claims
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1. An expandable head for a hunting arrow comprising:
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(a) a first elongate member having a rear end adapted to he attached to the front end of an arrow shaft, and having a longitudinally extending forward portion; (b) second elongate member having a pointed front end and a rearwardly extending portion that is adapted to slidably connect to said forward portion of said first member for axial movement relative to said first member, from a forward position to a rearward position; (c) a first and at least a second blade each of said blades having its front end pivotally connected to said second elongate member; (d) a first and at least a second linking arms, each said arm having a rear end pivotally connected to said first elongate member, and said first and second linking arms having forward ends that pivotally attach respectively to said first and second blades, at a connection point on each said blade that is spaced from the front end of said blade; (e) means, operative between the forwardly extending portion of said first elongate member and the rearwardly extending portion of said second member, for exerting a predetermined static frictional force for holding said first and said second members against relative sliding movement; and (f) wherein said first and second blades have a retracted configuration in which said blades lie slightly divergent with respect to each other and said second member lying in its forward position relative to said first member when said blades are retracted, and wherein when said second member is urged toward its rearward position by forces of impact of said second member with a target said blades are caused to rotate to an extended, more divergent configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification