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US3854723A Expired / Lapsed US ⏱️ 0.0 years remaining

Hunting arrow

Assignee: Shakespeare and Company
•
Filing: 1970-07-06
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Granted: 1974-12-17
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Expires: 1990-07-06
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Abstract

Abstract A hunting arrow adapted for accurate use in conjunction with a wide range of bow weights. The center of gravity of the arrow is located in proximity to the longitudinal midpoint of the arrow (preferably just forwardly thereof) by demountably securing primary and secondary blades of the broad head type hunting head directly to the shaft. This is accomplished by providing first and second intersecting axial slots in the conically tapered nose portion of the shaft and corresponding pairs of diametric grooves on the outer surface of the arrow shaft. Each pair of diametric grooves are aligned with the plane of a corresponding slot and open axially through the nose portion of the shaft. The second blade has rearwardly diverging legs joined at their forward portion by a stabilizing bridge removably received within the second slot. Spaced rearwardly of the stabilizing bridge, locating feet on the legs extend opposingly toward, and are received in, the grooves aligned with the plane of the second slot. The primary blade has rearwardly divergent legs joined at their forward portion by a generally triangular web. A portion of the stabilizing edge along the rear of the web is removably received within the first slot and embraces the stabilizing bridge of the secondary blade received within the second slot. Contact surfaces on the primary blade engage the conically tapered nose portion of the shaft, and locating feet on the legs of the primary blade extend opposingly toward, and are received in, the grooves aligned with the plane of the first slot. Locking ribs on the locating feet of the primary blade interengage anchor bores releasably to maintain the primary blade, and thereby the secondary blade as well, on the shaft.

Inventors

  • 👤 R Wilson

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 17:11
CPC Classifications
F; F42; F42B; F42B6/00; F42B6/02; F42B6/08

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 318 words
A hunting arrow comprising, a shaft having a rearward end, a nose portion and an outer surface, a nock means secured to the rearward end of said shaft, fletchings secured to said shaft forwardly of the nock means, first and second diametric slots opening in a plane axially through the nose portion of said shaft, diametric grooves in the outer surface of said shaft aligned with the plane of said first slot, an anchor means in at least one of said grooves, primary broadhead blade means having a generally triangular web portion terminating in an apex defining the point of said blade means, opposed legs diverging rearwardly from said web portion, a stabilizing edge means on said web portion medially of said legs, a locating foot on each leg spaced rearwardly of said web portion, locking means carried on said locating feet, said stabilizing edge means removably receivable within said first slot and said locating feet removably receivable in said grooves, said locking means interengaged with said anchor means releasably to maintain said primary blade means on said shaft, said second slot having a greater axial extent than said first slot, a second set of diametric grooves in the outer surface of said shaft aligned with the plane of said second slot, a secondary broadhead blade means having opposed legs joined at the forward portion thereof by a stabilizing bridge, a locating foot on each leg of said secondary blade means spaced rearwardly of said stabilizing bridge, said stabilizing bridge removably receivable in said second slot and the locating feet on said secondary blade means removably receivable in the grooves aligned with the plane of said second slot, the stabilizing edge on the web portion of said primary blade means cooperating with the stabilizing bridge means on said secondary blade means to maintain said secondary blade means on said shaft when said primary blade means is secured thereto.
Claim 2
Dependent Claim 318 words
A hunting arrow comprising, a shaft having a rearward end, a nose portion and an outer surface, a nock means secured to the rearward end of said shaft, fletchings secured to said shaft forwardly of the nock means, first and second diametric slots opening in a plane axially through the nose portion of said shaft, diametric grooves in the outer surface of said shaft aligned with the plane of said first slot, an anchor means in at least one of said grooves, primary broadhead blade means having a generally triangular web portion terminating in an apex defining the point of said blade means, opposed legs diverging rearwardly from said web portion, a stabilizing edge means on said web portion medially of said legs, a locating foot on each leg spaced rearwardly of said web portion, locking means carried on said locating feet, said stabilizing edge means removably receivable within said first slot and said locating feet removably receivable in said grooves, said locking means interengaged with said anchor means releasably to maintain said primary blade means on said shaft, said second slot having a greater axial extent than said first slot, a second set of diametric grooves in the outer surface of said shaft aligned with the plane of said second slot, a secondary broadhead blade means having opposed legs joined at the forward portion thereof by a stabilizing bridge, a locating foot on each leg of said secondary blade means spaced rearwardly of said stabilizing bridge, said stabilizing bridge removably receivable in said second slot and the locating feet on said secondary blade means removably receivable in the grooves aligned with the plane of said second slot, the stabilizing edge on the web portion of said primary blade means cooperating with the stabilizing bridge means on said secondary blade means to maintain said secondary blade means on said shaft when said primary blade means is secured thereto.
Claim 3
Dependent Claim 53 words
A hunting arrow, as set forth in claim 1, in which the stabilizing edge means on said primary blade means has a recess bounded by shoulder means, said recess engaging the bridge portion of said secondary blade means and said shoulder means engaging the first slot in the nose portion of said shaft.
Claim 4
Dependent Claim 26 words
A hunting arrow, as set forth in claim 2, in which said recess engages said bridge means substantially completely within the nose portion of said shaft.
Claim 5
Dependent Claim 53 words
A hunting arrow, as set forth in claim 3, in which the nose portion of said shaft is conically tapered, and in which contact surfaces are provided on said primary blade means rearwardly of said shoulder means to engage said tapered nose portion when said primary blade means is mounted on said shaft.
Claim 6
Dependent Claim 36 words
A hunting arrow, as set forth in claim 4, in which said first and second slots are substantially perpendicular and the span of said recess is substantially equal to the thickness of said secondary blade means.
Claim 7
Dependent Claim 28 words
A hunting arrow, as set forth in claim 5, in which the span of said first slot is substantially equal to the thickness of said primary blade means.
Claim 8
Dependent Claim 15 words
A hunting arrow, as set forth in claim 6, in which the shaft is metallic.

References Cited (Backward Citations)

US2289284A Cited
US2686055A Cited
US2829894A Cited
US2909372A Cited
US2912247A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-12-16 1978-06-17 1978-12-17 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-12-16 1982-06-17 1982-12-17 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-12-16 1986-06-17 1986-12-17 $7700.00 Window Closed / Lapsed

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