IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0847793
(2004-05-18)
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발명자
/ 주소 |
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인용정보 |
피인용 횟수 :
0 인용 특허 :
6 |
초록
The invention is a projectile plaything, namely a boomerang-like toy that, if properly thrown, will fly in an arcuate path and return to the area of its release. The plaything will be formed to imitate the shape of the United States Air Force B2 Bomber, aka the Stealth Bomber.
대표청구항
▼
1. A projectile plaything, comprising:a top face and an opposite facing bottom face; a nose point formed at respective initial points of a first edge and a second edge, the first and second edges bearing generally equal lengths; a third edge having a generally jagged sawtooth pattern, the third edge
1. A projectile plaything, comprising:a top face and an opposite facing bottom face; a nose point formed at respective initial points of a first edge and a second edge, the first and second edges bearing generally equal lengths; a third edge having a generally jagged sawtooth pattern, the third edge extending between terminal points of the first and second edges, the jagged sawtooth pattern having a first short edge extending from the terminal point of the first edge in a direction generally parallel to the second edge, and a first parallel edge extending from the first short edge and running generally parallel to the first edge; and, a second short edge extending from a terminal point of the second edge in a direction generally parallel to the first edge, and a second parallel edge extending from the second short edge and running generally parallel to the second edge, the respective first and second parallel edges each bearing a taper terminating adjacent the respective parallel edge; and, at least one V-Shaped projection, each V-Shape having a vertex that points away from the nose point; a leading chamfer formed along the first edge and angling from the top face toward the bottom face, the leading chamfer having a starting point positioned along the first edge and linearly broadening distal the starting point of the leading chamfer; a trailing taper formed along the second edge and starting from the nose point and linearly broadening distal the vertex; a cut-out portion extending throughout the top face and the bottom face and positioned between the nose point and the saw-tooth pattern, wherein edges of the cut-out portion bear a chamfer generally parallel to the trailing taper. 2. The projectile plaything as in claim 1, wherein the trailing taper starts from the nose point and terminates adjacent the second short edge.3. The projectile plaything as in claim 1, wherein the leading chamfer starts at a point on the first edge that is generally equidistant.4. The projectile plaything as in claim 1,the sawtooth pattern consisting of a first, a middle, and a third V-Shaped projection; and wherein, an outline of the plaything is generally symmetric about a line passing through the nose and a vertex of the middle V-Shaped projection. 5. The projectile plaything as in claim 4, wherein the first, middle, and third V-Shaped projections each bear a leading edge that is generally parallel to the second edge of the plaything, and a trailing edge that is generally parallel to the first edge of the plaything; and, the trailing edge of each of the first and third V-Shaped projection bears a taper.6. A projectile plaything, comprising:a generally planar structure having a nose formed at a vertex of a first edge and a second edge; a third edge connecting terminal points of the first and second edges, the third edge bearing a first, second and third V-Shaped projection, each V-Shaped projection having a point that points in a direction generally opposite the nose; a cut-out portion extending throughout a top face and a bottom face of the plaything and formed between the nose and the third edge; wherein, as the plaything is thrown so that it rotates about a center of mass so that each V-Shaped projection has a leading edge V-Shape that contacts air initially when rotated, and a trailing edge of the V-Shape that follows the leading edge when rotated, each of the second edge of the plaything; and the trailing edge of the first V-Shaped projection; and, the trailing edge of the third V-Shaped projection are each tapered with respect to the first edge of the plaything; and the leading edge of the first V-Shaped projection, and the leading edge of the third V-Shaped projection, respectively; thereby creating an airfoil effect that propels the plaything to fly in an arcuate path that terminates in an area adjacent to a point of origin of the arcuate path. 7. The projectile plaything as in claim 6, further comprising:a chamfer formed on an edge of the cut-out portion, the chamfer being generally parallel to the taper formed on the second edge. 8. The projectile plaything as in claim 6, wherein each taper originates from the top face and terminates adjacent the bottom face.9. The projectile plaything as in claim 6, wherein the second V-Shaped projection is positioned between the first and third V-Shaped projections; and,the second V-Shaped projection bears a neutral cut on both of its leading edge and trailing edge. 10. The projectile plaything as in claim 6, wherein the projectile plaything is made of one of plastic or wood.11. The projectile plaything as in claim 6, wherein,the taper formed along the second edge originates at the nose, and linearly broadens along the second edge. 12. The projectile plaything as in claim 6, further comprising:a first short edge formed at a terminal point of the first edge, the first short edge extending generally parallel to the second edge; and, a first parallel edge extending between the first short edge and an endpoint of the leading edge of the first V-Shaped projection; wherein, the first parallel edge is tapered with respect to the first edge. 13. The projectile plaything as in claim 12, wherein,the first short edge, the first parallel edge, and the first edge cooperate to form a first handle enabling one to rotatably throw the plaything so that it rotates about its center of mass in flight. 14. The projectile plaything as in claim 6, further comprising:a second short edge formed at a terminal point of the second edge and extending generally parallel to the first edge; and, a second parallel edge extending between the second edge to and endpoint of the leading edge of the third V-Shaped projection; wherein, the second parallel edge is enlarged with respect to the second edge. 15. The projectile plaything as in claim 14, whereinthe second short edge, the second parallel edge, and the second edge cooperate to form a second handle enabling one to rotatably throw the plaything so that it rotates about its center of mass in flight.
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