Not applicable.
The instant disclosure relates to archery. More particularly, the instant disclosure pertains to broadheads.
A wide range of arrowhead designs suitable for archery are commercially available. One category of arrowheads is the broadhead—a bladed arrowhead featuring multiple sharp cutting blades that are designed to greatly increase the effective cutting area of the arrowhead when it impacts a target. Broadheads are popular in the bowhunting industry, as the increased cutting radius of a broadhead results in larger entrance and exit wounds in a game animal struck by the broadhead, causing increased blood loss which kills the animal quickly and humanely, and provides a better blood trail for tracking and retrieval of the carcass.
While broadheads provide an improved cutting capability when compared to non-bladed field point or nib point arrowheads, some broadhead designs suffer from inferior aerodynamic properties in comparison with their non-bladed counterparts. The blades of the broadhead, if deployed during the flight of an arrow, can result in undesirable effects and cause the arrow to veer off course from the flight path.
Prior art broadhead designs have attempted to resolve the aerodynamic issues by retaining, at least in part, the deployable cutting blades of the broadhead within the ferrule body of the broadhead during flight. Upon impacting the target, the blades are deployed, moving outwardly from the ferrule body and exposing the sharp cutting edges of the blades once fully deployed. Such designs are known by those skilled in the art as an “expandable broadhead.”
A non-limiting exemplary embodiment of a broadhead includes a ferrule having a distal end, a plurality of recesses extending proximally from proximate the distal end, and at least one protrusion extending away from a surface of at least one of the plurality of recesses, wherein an outer edge of the at least one protrusion is configured as a cutting edge.
Another non-limiting exemplary embodiment of a broadhead includes a ferrule and a plurality of deployable blades. The ferrule includes a distal end, a plurality of recesses extending proximally from proximate the distal end, at least one protrusion extending away from a surface of at least one of the plurality of recesses, and a plurality of channels extending proximally from proximate the distal end, wherein each channel is disposed between adjacent recesses. At least a portion of each blade is disposed within and is pivotally coupled to one of the plurality of channels. Each blade includes a tip, an impact region, a first cutting edge extending from the tip to proximate the impact region, and a second cutting edge extending from the tip to proximate the channel to which the blade is pivotally coupled.
Yet another non-limiting exemplary embodiment of a broadhead includes a ferrule and a plurality of deployable blades. The ferrule includes a distal end, a plurality of recesses extending proximally from proximate the distal end, at least one protrusion extending away from a surface of one or more of the plurality of recesses, and a plurality of channels extending proximally from proximate the distal end, wherein each channel is disposed between adjacent recesses. At least a portion of each blade of the plurality of blades is disposed within and is pivotally coupled to one of the plurality of channels. Each blade includes a tip, an impact region, a first cutting edge extending from the tip to proximate the impact region, and a second cutting edge extending from the tip to proximate the channel to which the blade is pivotally coupled. During flight, the tips of each blade converge to form a chisel tip having cutting edges defined at least in part by the first cutting edge of each blade.
One or more non-limiting embodiments are described herein with reference to the accompanying drawings, wherein like numerals designate like elements. It should be clearly understood that there is no intent, implied or otherwise, to limit the disclosure in any way, shape or form to the embodiments illustrated and described herein. While multiple exemplary embodiments are provided, variations thereof will become apparent or obvious to a person of ordinary skills. Accordingly, any and all variants for providing functionalities similar to those described herein are considered as being within the metes and bounds of the instant disclosure.
In a non-limiting exemplary embodiment, the broadhead 10 includes the plurality of blades 12 and the ferrule 16. The ferrule 16 includes a distal end 18 and a proximal end 20. In a non-limiting exemplary embodiment, the ferrule 16 includes a plurality of recesses 22 extending proximally from proximate the distal end 18. In some embodiments, the plurality of recesses 22 extend along a portion of the longitudinal extent of the ferrule 16. In certain embodiments, the plurality of recesses 22 extend along an entire longitudinal extent of the ferrule 16. In some embodiments, some of the plurality of recesses 22 extend along a portion of the longitudinal extent of the ferrule 16 in combination with some of the plurality of recesses 22 extending along the entire longitudinal extent of the ferrule 16. In certain embodiments, one or more of the plurality of recesses 22 includes a channel 24.
In a non-limiting exemplary embodiment, the ferrule 16 includes a plurality of channels 26 extending proximally from proximate the distal end 18. In some embodiments, the plurality of channels 26 extend along a portion of the longitudinal extent of the ferrule 16. In certain embodiments, the plurality of channels 26 extend along an entire longitudinal extent of the ferrule 16. In some embodiments, some of the plurality of channels 26 extend along a portion of the longitudinal extent of the ferrule 16 in combination with some of the plurality of channels 26 extending along the entire longitudinal extent of the ferrule 16. In certain embodiments, each channel of the plurality of channels 26 is disposed between adjacent recesses of the plurality of recesses 22.
In a non-limiting exemplary embodiment, one or more of the plurality of recesses 22 is configured for relieving fluid pressure generated at the distal end 18 of the ferrule 16 as the broadhead 10 penetrates a target. In a non-limiting exemplary embodiment, the channel 24 in one or more of the plurality of recesses 22 is configured for relieving fluid pressure generated at the distal end 18 of the ferrule 16 as the broadhead 10 penetrates a target. In a non-limiting exemplary embodiment, one or more of the plurality of channels 26 is configured for relieving fluid pressure generated at the distal end 18 of the ferrule 16 as the broadhead 10 penetrates a target. In certain embodiments, one or more of the plurality of recesses 22 and one or more of the plurality of channels 26 are configured for relieving fluid pressure generated at the distal end 18 of the ferrule 16 as the broadhead 10 penetrates a target.
While the broadhead 10 of the instant disclosure is illustrated having three cutting blades 12 in a balanced or even distribution, e.g., 120 degrees apart from one another, around the ferrule 16, this should not be construed a requirement or a limitation. In some non-limiting exemplary embodiments, the broadhead 10 includes two cutting blades 12 disposed 180 degrees apart from each other on the ferrule 16. In certain non-limiting exemplary embodiments, the broadhead 10 includes more than three cutting blades 12 in a balanced distribution around the ferrule 16. For instance, an exemplary broadhead includes four cutting blades 12 disposed 90 degrees apart from one another around the ferrule 16. Accordingly, broadheads with two or more cutting blades 12 are considered as being within the metes and bounds of the instant disclosure.
In a non-limiting exemplary embodiment, each blade 12 of the plurality of blades includes a tip 28, an impact region 30 having an impact shoulder 54, a first sharp cutting edge 32, a second sharp cutting edge 34, and an opening 36. In some embodiments, the first cutting edge 32 extends between the tip 28 and the impact region 30. In certain embodiments, the first cutting edge 32 extends between the tip 28 and the impact shoulder 54. However, this extent or size or length of the first cutting edge 32 should not be construed as a limitation or a requirement. In some embodiments, the first cutting edge 32 extends along a portion of the distance between the tip 28 and the impact shoulder 54. In certain embodiments, the second cutting edge 34 extends from the tip 28 to proximate the opening 36. However, this extent or size or length of the second cutting edge 34 should not be construed as a limitation or a requirement. In some embodiments, the second cutting edge 34 extends along a portion of the distance between the tip 28 and the opening 36.
In a non-limiting exemplary embodiment, each channel of the plurality of channels 26 is configured for receiving or housing or accommodating and pivotally coupling at least a portion of one of the plurality of blades 12. In some embodiments, each channel of the plurality of channels 26 includes openings 38 in opposing walls or sides 40. In certain embodiments, the section 42 of each blade 12 having the opening 36 is placed within one of the plurality of channels 26 between opposing walls 40. The openings 36 and 38 are aligned, and the blade 12 is pivotally coupled to the channel 26 with a fastener or a dowel extending through the openings 36 and 38. The fastener or dowel can be a pivot pin or any other mechanism known in the art for pivotally coupling the blade 12 and the channel 26 such that the blade 12 is not hindered from rotation. In some embodiments, the second cutting edge 34 of the blade 12 extends from the tip 28 to a location proximate the channel 26 to which the blade 12 is coupled.
In a non-limiting exemplary embodiment, the collar 14 is configured for retaining the plurality of blades 12 in the fully retracted position or state or configuration. Accordingly, in some embodiments, each channel of the plurality of channels 26 is configured for receiving or accommodating or housing at least a portion of the second cutting edge 34 while the blade 12 is in the fully retracted, i.e., un-deployed, state. In certain embodiments, for minimizing dulling of the sharp cutting edge 34, each blade 12 and/or each channel 26 are/is configured or designed to ensure minimal contact between the second cutting edge 34 and the bottom of the corresponding channel 26. In some embodiments, the tips 28 of each of the plurality of blades 12 converge or almost converge to form a distal tip or end 44 of the broadhead 10. In certain embodiments, the distal tip 44 of the broadhead 10 is a chisel tip having cutting edges defined at least in part by the first cutting edge 32 of each blade 12. In some embodiments, the plurality of blades 12 are configured such that the distal (or chisel) tip 44 of the broadhead 10 is formed distally or in front of or beyond the distal end 18 of the ferrule 16. In certain embodiments, the plurality of blades 12 are configured such that the distal (or chisel) tip 44 of the broadhead 10 is formed at or is proximate to the distal end 18 of the ferrule 16. In some embodiments, the plurality of blades 12 are configured such that the distal (or chisel) tip 44 of the broadhead 10 is formed at a location proximal of the distal end 18 of the ferrule 16. Other configurations for forming the distal tip 44 as a chisel tip with sharp cutting edges that may become apparent to one skilled in the art are considered as being within the metes and bounds of the instant disclosure.
It will be apparent to one skilled in the art that the collar 14 functions or operates to at least form the distal chisel tip 44 with cutting edges defined at least in part by the first cutting edge 32 of each of the plurality of blades 12. The collar 14 functions as such during flight, i.e., before the broadhead 10 impacts a target, and perhaps also momentarily after the broadhead 10 impacts the target. As is well known to those skilled in the art, the arrow or bolt, and the broadhead or tip at the distal end thereof, rotates or spins about its longitudinal axis at a relatively high angular velocity after being discharged from a bow and while in flight towards the target. In a non-limiting exemplary embodiment, when the distal chisel tip 44 touches the target, the spinning or rotating cutting edges of the distal chisel tip 44, i.e., the first cutting edges 32 of the blades 12, create a bore and the distal chisel tip 44 of the broadhead 10 bores into the target. As the broadhead 10, with the fully retracted blades 12 spinning, penetrates the target, a force is exerted by the target onto the impact region 30, and in particular on the impact shoulder 54, in the proximal direction. The force causes the blades 12 to rotate outward away from the ferrule 16. In some embodiments, the outward rotation of the blades 12 causes the collar 14 to disintegrate (i.e., shatter or break). As the blades 12 continue to rotate outwards, the second cutting edge 34 of each blade 12 is exposed out of the corresponding channel 26 in the direction away from the ferrule 16. The first cutting edges 32 continue to widen and lengthen the bore as the broadhead 10 continues to penetrate the target and the blades 12, and more particularly the second cutting edges 34, continue rotating outwards away from the ferrule 16. In a non-limiting exemplary embodiment, the blades 12 are configured such that when the second cutting edges 34 are sufficiently exposed, the target starts exerting the force onto the exposed second cutting edges 34 in the proximal direction until the blades 12 are fully extended or deployed into a swept-back configuration exposing the entirety of the second cutting edges 34. The second cutting edges 34 of the blades 12 act to cut into the target and widen and lengthen the bore as the broadhead 10 continues to bore or penetrate into the target.
In a non-limiting exemplary embodiment, the collar 14 is an O-ring or an elastic band. In some embodiments, the outward rotation of the blades 12 upon impact causes the collar 14 to “slide” in the proximal direction along the contours of the blades 12 until it “slips off” the blades 12 without disintegrating. Thereafter, the broadhead 10 and blades 12 operate or function as described supra. Other forms and/or configurations of collars for retaining the blades 12 in the retracted state during flight as are well-known in the art are considered as being within the metes and bounds of the instant disclosure.
In a non-limiting exemplary embodiment, the distal end 18 of the ferrule 16 is configured as a chisel tip or a multi-faceted tip or a trocar tip having a plurality of facets and sharp cutting edges disposed between adjacent facets such as those disclosed at least in applicant's co-owned U.S. Pat. Nos. 9,410,778, 9,404,722, 8,986,141, 7,771,298, 7,182,706, 7,011,589, 6,942,588, 6,669,586, 6,626,776, 6,554,727, 6,517,454, among others, and in International Publication No. WO 2018/075356, among others, all of which are herein incorporated by reference in their entirety. As disclosed in one or more of these patents and/or publications, the distal end 18, in some embodiments, is formed as an integral part of the ferrule 16. Also as disclosed in one or more of these patents and/or publications, the distal end 18, in some embodiments, is a discrete component attached to the ferrule 16.
In a non-limiting exemplary embodiment, one or more of the plurality of recesses 22 includes at least one protrusion 46 extending outwardly or away from a surface 48 of each of the plurality of recesses 22. In some embodiments, the protrusion 46 extends radially from the surface 48. In certain embodiments, the protrusion 46 extends substantially orthogonally relative to the longitudinal axis of the ferrule 16. In some embodiments, the protrusion 46 has a small curvature or is slightly curved as it extends away from the surface 48.
In a non-limiting exemplary embodiment, the channel 24 in the plurality of recesses 22 extends through the base or bottom of one or more of the protrusion 46. In a non-limiting exemplary embodiment, one or more of the protrusion 46 includes a channel (not shown) extending therethrough either in addition to the channel 24 or as an alternative to the channel 24. In some embodiments, the channel 24 and/or the channel extending through the protrusion 46 is configured for relieving fluid pressure generated at the distal end 18 of the ferrule 16 as the broadhead 10 penetrates a target.
In a non-limiting exemplary embodiment, at least a portion of an outermost edge 52 of the protrusion 46 is configured as a cutting edge. While the figures illustrate an embodiment wherein at least a portion of the outermost edge 52 of the protrusion 46 extends substantially parallel to the longitudinal axis of the ferrule 16, this should not be construed as limiting or a requirement. In a non-limiting exemplary embodiment, the outermost edge 52 of the protrusion 46 extends away from and/or extends towards the longitudinal axis of the ferrule 16.
In a non-limiting exemplary embodiment, the proximal end 20 of the ferrule 16 is configured for attaching the broadhead 10 to a shaft of an arrow or a bolt. While the figures of the instant disclosure might imply that the proximal end 20 is threaded, this should not be construed as limiting. In some embodiments, the proximal end 20 is an un-threaded shaft or cylinder. Other forms and/or configurations for attaching or coupling a broadhead to the shaft of an arrow or bolt, as are well known in the art, are considered as being within the metes and bounds of the instant disclosure.
It will be readily apparent that as the blades 12 rotate from the fully retracted in-flight configuration to the fully extended (or deployed) swept-back configuration, the blades 12 traverse a plane substantially orthogonal to the longitudinal axis of the broadhead 12 (or the ferrule 16). Consequently, the tip 28 of each blade 12 traverses an arc having a center at the location whereat the blade 12 is coupled to the corresponding channel 26.
In contrast to the ferrule 16 of the broadhead 10, a non-limiting exemplary embodiment of the broadhead 100 includes a ferrule 116.
As with ferrule 16, a non-limiting exemplary embodiment of the ferrule 116 also includes distal and proximal ends 18 and 20, plurality of recesses 22, and plurality of channels 26. While both ferrules 16 and 116 include at least one protrusion 46 and 146, respectively, extending outwardly or away from the surface 48 of each of the plurality of recesses 22, one difference between the ferrules 16 and 116 is in the location of the distal point or end 50 and 150, respectively, of the protrusions 46 and 146. As perhaps best seen in
In view thereof, modified and/or alternate configurations of the embodiments described herein may become apparent or obvious to one of ordinary skill. All such variations are considered as being within the metes and bounds of the instant disclosure. For instance, while reference may have been made to particular feature(s) and/or function(s), the disclosure is considered to also encompass any and all equivalents providing functionalities similar to those disclosed herein with reference to the accompanying drawings. Accordingly, the spirit, scope and intent of the instant disclosure is to embrace all such variations. Consequently, the metes and bounds of the instant disclosure are defined by the appended claims and any and all equivalents thereof.
This application is a continuation-in-part (CIP) of U.S. patent application Ser. No. 16/161,713 filed Oct. 16, 2018, which claims the benefit of U.S. Provisional Patent Application No. 62/574,168 filed Oct. 18, 2017, all of which are herein incorporated by reference in their entirety.
Number | Date | Country | |
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62574168 | Oct 2017 | US |
Number | Date | Country | |
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Parent | 16161713 | Oct 2018 | US |
Child | 16564630 | US |