# US 8,771,112 B2 · Broadhead > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,771,112 B2 - Document ID: US8771112B2 - Status: Granted - Kind: B2 - Application number: 13/664,196 - Filed: 2012-10-30 - Published: 2013-05-16 - Granted: 2014-07-08 - Earliest claimed: 2007-06-05 - Applicants: Chris G. Sanford - Inventors: Chris G. Sanford - Web page: https://patentgrep.com/patent/US8771112B2 ## CPC - F42B 6/08: Arrow heads; Harpoon heads - F42B 12/34: expanding before or on impact, i.e. of dumdum or mushroom type - F42B: EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION (explosive compositions C06B; fuzes F42C; blasting F42D) ## Abstract An arrow broadhead having a pair of cutting blades held in a retracted position during arrow flight and extending outwardly in an expanded position upon arrow contact. The subject broadhead includes a pair of pivot arms or sliding arm received in an elongated groove in a cutting blade housing body. The pivot arms or sliding arm are attached to one end of the cutting blades. At least a portion of the cutting blades are folded into the groove during arrow flight. Upon target contact, the pivot arms or sliding arm pivot the cutting blades outwardly from opposite sides of the groove into an expanded position for increased cutting and penetration in the target. ## Claims ### Claim 1 An arrow broadhead comprising: a housing body having at least one elongated aperture extending through at least a portion of the housing body; a tip coupled to the housing body; at least one elongated generally cylindrical arm disposed at least partially within the elongated aperture and rearward of the tip, the at least one arm configured to move independently from the tip; and first and second cutting blades disposed at least partially within the elongated aperture and pivotally coupled to the at least one arm; wherein the first and second cutting blades are configured to pivot outward relative to the housing body as the at least one arm moves rearward relative to the housing body within the elongated aperture; wherein the first and second cutting blades each have a cutting edge and an inside edge, each inside edge having a protruding portion extending from the cutting blade. ### Claim 2 (depends on 1) The arrow broadhead of claim 1, wherein the at least one arm is pivotally coupled to the housing body. ### Claim 3 (depends on 1) The arrow broadhead of claim 1, wherein the at least one arm is configured to slide rearward within the elongated aperture in the housing body. ### Claim 4 (depends on 1) The arrow broadhead of claim 1, wherein the at least one arm comprises a pair of moveable arms disposed at least partially within the elongated aperture in the housing body. ### Claim 5 (depends on 1) The arrow broadhead of claim 1, wherein each cutting blade defines an elongated window therethrough. ### Claim 6 (depends on 1) The arrow broadhead of claim 1, wherein, at least in a retracted position, the first cutting blade extends through a first side of the aperture and protrudes out a second, opposite side of the aperture. ### Claim 7 (depends on 1) The arrow broadhead of claim 1, wherein the tip comprises a blade. ### Claim 8 (depends on 1) The arrow broadhead of claim 1, wherein a cutting blade has a recess configured to receive a curved portion of a spring mechanism. ### Claim 9 (depends on 1) The arrow broadhead of claim 1, wherein, at least in a retracted position, the first cutting blade extends through a first side of the aperture and protrudes out a second, opposite side of the aperture. ### Claim 10 (depends on 1) The arrow broadhead of claim 1, wherein the tip comprises a cutting blade. ### Claim 11 (depends on 1) The arrow broadhead of claim 1, wherein the tip is at least one of press fit, glued or threaded into a portion of the housing body. ### Claim 12 An arrow broadhead comprising: a housing body having at least one elongated aperture extending through at least a portion of the housing body; a tip coupled to the housing body; at least one elongated generally cylindrical arm disposed at least partially within the elongated aperture and rearward of the tip, the at least one arm configured to move independently from the tip; and first and second cutting blades disposed at least partially within the elongated aperture and pivotally coupled to the at least one arm; wherein the first and second cutting blades are configured to pivot outward relative to the housing body as the at least one arm moves rearward relative to the housing body within the elongated aperture, wherein at least one of the first and second cutting blades has a recess configured to receive a curved portion of a spring mechanism for retaining the at least one cutting blade in a retracted position. ### Claim 13 (depends on 12) The arrow broadhead of claim 12, wherein the first and second cutting blades each have a cutting edge and an inside edge, each inside edge having a protruding portion extending from the cutting blade. ### Claim 14 (depends on 13) The arrow broadhead of claim 13, wherein each cutting blade defines an elongated window therethrough. ### Claim 15 (depends on 14) The arrow broadhead of claim 14, wherein, at least in a retracted position, the first cutting blade extends through a first side of the aperture and protrudes out a second, opposite side of the aperture. ### Claim 16 (depends on 12) The arrow broadhead of claim 12, wherein the tip comprises a blade. ### Claim 17 An arrow broadhead, comprising: a housing body having at least one elongated aperture extending through at least a portion of the housing body; at least one elongated generally cylindrical arm disposed at least partially within the elongated aperture; and first and second cutting blades pivotally coupled to the at least one arm, wherein at least a portion of each of the first and second cutting blades is exposed outside the housing body in a retracted position, wherein the first and second cutting blades are configured to pivot outward relative to the housing body from the retracted position to an extended position as the at least one arm moves rearward relative to the housing body within the elongated aperture. ### Claim 18 (depends on 17) The arrow broadhead of claim 17, further comprising: a tip coupled to the housing body; wherein the at least one elongated generally cylindrical arm is disposed rearward of the tip, the at least one arm configured to move independently from the tip; wherein the first and second cutting blades are disposed at least partially within the elongated aperture; and an O-shaped metal ring configured to hold the at least one arm or at least one of the first and second cutting blades in a retracted position. ### Claim 19 (depends on 18) The arrow broadhead of claim 18, wherein, at least in the retracted position, the first cutting blade extends through a first side of the aperture and protrudes out a second, opposite side of the aperture. ### Claim 20 (depends on 19) The arrow broadhead of claim 19, wherein the tip is removable.