Patent US2265844A successfully refreshed from Google Patents.
Patent US4452460A successfully refreshed from Google Patents.
US4452460A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrowhead construction
Assignee: Individual
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Filing: 1982-11-22
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Granted: 1984-06-05
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Expires: 2002-11-22
Abstract
Abstract An arrowhead, with a conoidal, dowel-like body and a point to provide sufficient penetration, has at least two pivotable sharp blades disposed aft of the point and symetrical about the body. The blades are triangular and are pivotably mounted to the body by their aft or rear angles and extend radially outward with one edge of the blade disposed against the body so that one of the acute angles of each blade points forward. In a preferred embodiment, each blade is slightly recessed within an axially parallel slot and the pivoting function is formed by a ring threaded through the respective aft angles of the blades. In turn, the ring is coaxially disposed around the body and suitably secure in place to prevent axial movement thereof.
Inventors
- 👤 Claude L. Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:02
CPC Classifications
F; F42; F42B; F42B6/00; F42B6/02; F42B6/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
201 words
An arrowhead comprising: a conical body symetrical about an axis and having a pointed forward end and first means formed at the rearward end capable of being attached to a shaft; at least two rotatable blades mounted symetrically around said body and disposed to protrude radially outward; second means for pivotably mounting said blades to said body so that said blades are capable of pivoting outwardly and rearwardly; each of said blades are triangular in shape; said body having at least two axially aligned slots symetrically disposed around said axis; each of said blades having one side thereof disposed within one of said respective slots; said second means comprising: an axially aligned stud protruding from said body and having a diameter smaller than the diameter of said body to where said stud is attached; each of said blades having an aperture formed relatively near the rearward angle of said blade which rearward angle is adjacent the said body; a ring threaded through each of said apertures in said blades and said ring being disposed around said stud and adjacent said body; a thimble disposed on said stud and against said ring; and thread means for retaining said thimble to said stud.
Claim 2
Dependent Claim
201 words
An arrowhead comprising: a conical body symetrical about an axis and having a pointed forward end and first means formed at the rearward end capable of being attached to a shaft; at least two rotatable blades mounted symetrically around said body and disposed to protrude radially outward; second means for pivotably mounting said blades to said body so that said blades are capable of pivoting outwardly and rearwardly; each of said blades are triangular in shape; said body having at least two axially aligned slots symetrically disposed around said axis; each of said blades having one side thereof disposed within one of said respective slots; said second means comprising: an axially aligned stud protruding from said body and having a diameter smaller than the diameter of said body to where said stud is attached; each of said blades having an aperture formed relatively near the rearward angle of said blade which rearward angle is adjacent the said body; a ring threaded through each of said apertures in said blades and said ring being disposed around said stud and adjacent said body; a thimble disposed on said stud and against said ring; and thread means for retaining said thimble to said stud.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-06-05 | 1987-12-05 | 1988-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-05 | 1991-12-05 | 1992-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-05 | 1995-12-05 | 1996-06-05 | $7700.00 | Window Closed / Lapsed |