Magnetically controlled expandable arrowhead

• US 5,472,213 A
• Filed: 09/23/1994
• Issued: 12/05/1995
• Est. Priority Date: 09/23/1994
• Status: Expired due to Fees

• Current Assignee: Jerome M. Dudley
• Original Assignee: Jerome M. Dudley
• Inventors: Dudley, Jerome M.
• Primary Examiner(s): SHAPIRO, PAUL
• Application Number:
  US08/311,260
• Time in Patent Office: 438 Days
• Field of Search: 273/421, 273/422
• US Class Current: 473/583
• CPC Class Codes: F42B 6/08 Arrow heads; Harpoon heads

Abstract

An expandable arrowhead having a magnetic source capable of holding attached triangular shaped blades in a closed or open position relative to the magnetic strip'"'"'s fixed location beneath and between parallel opposing slots in the wall of a hollow metal shaft.

Claims

1. An expandable arrowhead comprising:

a. an elongate tubular shaft defined by a encircling wall;

b. a pair of diametrically located elongate slots in the wall of the shaft at the forward end thereof;

c. an elongate magnetic strip located within the shaft longitudinally aligned with and extending the length of the slots spanning the shaft between the slots;

d. a pair of overlapping triangular blades located in the shaft, overlying the magnetic strip, having their bases overlapping and positioned adjacent the rear end of the slots, the blades extending forwardly from the bases thereof to pointed leading ends, the leading ends of the blades extending outwardly from the shaft in opposite directions, each through one of the slots;

e. a magnetic spacer element overlying the bases of the blades;

f. aligned holes in each of the magnetic strip, blade bases, magnetic spacer and in diametrically opposed portions of the shaft wall; and

g. a pin extending the through the aligned holes for securing the magnetic strip, blades, and magnetic spacer element to the shaft whereby the magnetic strip and spacer cooperate to hold the blades partly within the shaft during flight and the blades may pivot about the pin upon impact with a target to extend outwardly of the shaft.