Games using tangible projectile – Projectile – per se; part thereof or accessory therefor – Arrow – dart – or shuttlecock; part thereof
Reexamination Certificate
2002-06-18
2004-05-25
Ricci, John A. (Department: 3712)
Games using tangible projectile
Projectile, per se; part thereof or accessory therefor
Arrow, dart, or shuttlecock; part thereof
C473S583000
Reexamination Certificate
active
06739991
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an apparatus and method for making an arrowhead blade, particularly a ceramic arrowhead blade.
2. Description of Related Art
Arrows and arrowheads have been utilized throughout history and are still commonly used today, primarily for hunting. Due to the increase in popularity of the sport of hunting, arrows are continuously designed to be faster, stronger to achieve full penetration of an object, and lighter. Most commonly used arrowheads are made of steel. However, steel arrowheads are heavy, and weight is a critical factor in the performance of the arrowhead. The weight of an arrowhead is critical because it determines the dynamics of arrow flight and also affects the speed of the arrowhead. In addition to the weight of steel arrowheads, the blade edges of the steel arrowheads are also subject to corrosion. The lack of wear resistance of these edges also decreases the life of the arrowhead. Thus, while the steel arrowheads may be stronger, they have a greater propensity for blade corrosion and wear resistance of the sharp edges. To avoid the occurrence of corrosion and the heaviness of the steel arrowheads, lighter materials can be used to make the arrowheads, such as plastic. However, these lighter arrowheads are ineffective because they lack in strength to complete full penetration of an object Therefore, it is an object of the present invention to provide an apparatus and method for making a stronger, lighter arrowhead which has better wear and corrosion resistance.
SUMMARY OF THE INVENTION
The present invention is directed to a ceramic arrowhead blade. The ceramic arrowhead blade includes a body with two linear edges directed toward each other. At least one of the linear edges is sharp. The body has a base between the two linear edges. The two linear edges can be directed toward each other to form a vertex. The two linear edges can also have serrations along the length of the edges or periodically along the edges. The ceramic arrowhead blade can be made of any ceramic material, such as zirconia, tungsten carbide or alumina. The body of the ceramic arrowhead blade may have a textured surface, such as dimples. Preferably, the ceramic arrowhead blade can have a weight of up to approximately 200 grains. The ceramic arrowhead blade may have two sharp linear edges.
The present invention is also directed to an arrow. The arrow includes a ceramic arrowhead blade, a body, a shank and an arrow body. The body of the ceramic arrowhead blade has two linear sharp edges directed toward each other as well as a base between the two edges. At least one of the linear edges is sharp. The two linear edges can be directed toward each other to form a vertex. The two linear edges can also have serrations along the length of the edges or periodically along the edges. The ceramic arrowhead blade can also have two sharp linear edges. The shank is attached to the ceramic arrowhead blade. The arrow body is attached to the shank to form the arrow. The ceramic arrowhead blade can be made of ceramic material, such as zirconia, tungsten carbide or alumina and can preferably have a weight of up to approximately 200 grains. The ceramic arrowhead blade may also have a body with a textured surface, such as dimples. The shank may receive a plurality of ceramic arrow blades.
The present invention is further directed to a ceramic arrowhead. The ceramic arrowhead includes a ceramic arrowhead blade and a shank. The ceramic arrowhead blade includes a body with two linear edges directed toward each other and a base between the two linear edges. At least one of the linear edges is sharp. The two linear edges can be directed toward each other to form a vertex. The two linear edges can also have serrations along the length of the edges or periodically along the edges. The body can also have a textured surface. The shank is attached to the ceramic arrowhead blade. The ceramic arrowhead may include a unitary ceramic arrowhead blade with two sharp linear edges. The ceramic arrowhead may include a plurality of ceramic arrowhead blades, where each of the ceramic arrowhead blades have one sharp linear edge.
The present invention is also directed to a powder metal arrowhead blade. The powder metal arrowhead blade includes a body with two linear edges directed toward each other and a base between the two linear edges. At least one of the linear edges is sharp.
The present invention is further directed to a polymeric arrowhead blade. The polymeric arrowhead blade includes a body with two linear edges directed toward each other and a base between the two linear edges. At least one of the linear edges is sharp.
The present invention is also directed toward a method for making a ceramic blade. The method includes providing a ceramic material and molding the ceramic material into an arrowhead. The arrowhead may be molded with at least one sharp linear edge.
REFERENCES:
patent: 2909372 (1959-10-01), Neri
patent: 3618948 (1971-11-01), McGlocklin
patent: 4452459 (1984-06-01), Doonan
patent: 4974859 (1990-12-01), Briesemeister
patent: 5137282 (1992-08-01), Segar et al.
patent: 5203573 (1993-04-01), Brailean
patent: 5251907 (1993-10-01), Ady
patent: 5390936 (1995-02-01), Westenburg
patent: 5458337 (1995-10-01), Jabben
patent: 5562291 (1996-10-01), Garcia
patent: 5636845 (1997-06-01), Newnam
patent: 5931751 (1999-08-01), Cooper
patent: 6151786 (2000-11-01), Hellstern
patent: 6186913 (2001-02-01), Thomas
patent: 6260280 (2001-07-01), Rapisardi
patent: 6277041 (2001-08-01), Fenn
patent: 6595881 (2003-07-01), Grace et al.
patent: 2002/0151393 (2002-10-01), Liechty
patent: 2 219 218 (1989-06-01), None
Ricci John A.
Webb Ziesenhiem Logsdon Orkin & Hanson P.C.
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