Handheld launchers and projectiles for target games.
The present invention generally relates to games where players manipulate two sticks or rods to propel a ring to another person who catches the ring with another stick or set of rods. An early American game “Game of Graces” exhibits the tossing of a ring with two sticks for the intent of catching the ring by another player with another set of sticks. Games using sticks to propel objects are known as disclosed in U.S. Pat. No. 4,174,834 and U.S. Pat. No. 429,531. While these inventions enable users to catch and release ring or disc shaped projectiles, their design and functionality are not suitable for the accuracy required of target based games due to the size of the opening required to achieve both catching and tossing with the same apparatus. The large opening allows for unwanted movement of the projectile during the launching method that inhibits accuracy and reduces the force and momentum imparted to the projectile by the rods, whereas a smaller opening that tightly constrains the opening of the projectile to the intersection of the sticks provides the accuracy necessary for target based games.
An object of the invention is to provide a manual apparatus utilizing a projectile comprised of resilient material with an opening for receiving two rods and a method of propelling the projectile by manipulating the rods in an opposing fashion while engaged within the opening of the projectile, thus propelling the projectile towards a target or game board with sufficient accuracy to hit desired sections of the board.
The primary innovation of the invention is the introduction of a smaller opening than used in similar games using two rods to propel an annular ring, such as the traditional colonial American game “Game of Graces” in which an annular ring is tossed and caught between two players using two rods to launch the ring and catch the ring by engaging one or both rods through the ring's opening while in flight. By introducing a smaller opening for the rods to engage, the opening of the projectile is tightly constrained to the intersection of the rods during the launching method, removing unwanted movement of the projectile away from the intended trajectory path. The tight constraint of the projectile to the intersection of the rods allows for the accuracy required for target based skill games. The optimal specification for the diameter of the opening of the projectile or annual ring is approximately 2.2 times the diameter of one of the rods. This ratio allows the ring to easily slide along the rods as the intersection of the rods as moves away from the shooter, yet prevents unwanted movement of the projectile away from the intended trajectory path. At approximately 10 times the diameter of one of the rods, the diameter of the opening of the projectile is rendered unsuitable for accurate targeting. A larger diameter also reduces the amount of directional force imparted to the projectile as the loose fit to the intersection of the rods can allow energy from the rods to be spent on motion by the projectile away from the intended trajectory.
Another object of the invention is that the projectile may be comprised of flight stabilizing aerodynamic appendages that orient the projectile in an optimal flight position or trajectory. The aerodynamic appendages may either stabilize the vertical flight position of the projectile as it leaves the rods during launch, or may reorient the projectile to a horizontal flight position during flight for longer distance. The aerodynamic elements can be used to enhance the flight characteristics for better targeting or for enjoyment and entertainment purposes. In its simplest form, an annular ring of the described specifications launched by a pair of rods has sufficient aerodynamic qualities to travel in the player's intended trajectory while also retaining its horizontal orientation throughout its flight, due in part to rotational momentum imparted by the rods upon the annular ring which acts as a stabilizing force on the ring. However, the ring and rods alone create significant speed and momentum that may create safety concerns for children and indoor play. The introduction of aerodynamic elements to the projectile can serve not only to stabilize the projectile in flight, but may also reduce the speed and momentum of the projectile to address safety concerns.
Another object of the invention is to provide the projectile with a method for interacting with a target so that the projectile's area of impact with the target is easily visible. The projectile can be propelled towards a target mounted vertically on a wall like traditional darts, or mounted horizontally on the ground, like lawn darts. The projectile can also be used to knock over or change the physical orientation of elements within a target, such as a set of lightweight bowling pins or a shooting gallery with targets that fall over when struck. The projectile can be adapted to best suit each of these game variations by modifying the aerodynamic properties of the projectile. Methods of temporarily attaching the projectile to a target upon impact can also be added to the projectile, such as but not limited to magnetic elements for ferrous targets or Velcro elements for fabric targets. The target may also have elements protruding from the target surface that engage the opening of the projectile.
The target may also have elements protruding from the target surface that engage the opening of the projectile so that the opening of the projectile encircles the protrusion upon impact.
Another object of the invention is to provide the projectile with a method for interacting with the target by defining areas on the target that the body of the projectile can overlap upon impact and remain in an overlapped position while temporarily attached to the target. The defined areas of the target are illustrated on the target with a graphic print. Overlapping the defined areas with the projectile can be used as a scoring mechanism in game play.
Another object of the invention is to provide game pieces that temporarily attach to a larger ferrous target with magnetic elements. The object of the game pieces is to provide a method for recording successful overlapping impacts by the projectiles upon graphically defined areas of the target. Another object of the game pieces is to provide an additional target which the projectiles can overlap upon impact. Overlapping and sustaining contact with a game piece can be used as a scoring mechanism in game play.
Another object of the invention is to provide a suitable playing surface that will prevent the magnetic game pieces from slipping on the target when it is impacted by the projectile. The playing surface is lightly textured to provide additional grip to the target beyond the magnetic force of the game pieces. The game pieces are also textured so that both the texture of the target and the texture of the game piece interact to counteract slipping downwards on the board due to gravitational attraction. The game pieces require this extra gripping feature because when the projectile impacts the target, vibrational forces can affect the magnetic bond of the game pieces to the target, resulting in a downward motion when the magnetic bond is weaker than the earths gravitational force upon the game piece.
Another object of the invention is to provide a suitable playing surface that will allow the magnetic game pieces to be repositioned on the target without having to remove them from the target. The game pieces, while having non-slip properties to counteract gravitational force, also have a weak enough attraction to the target surface that they may be slid across the target surface by manipulating them by hand
Another object of the invention is the polarity of the magnetic elements used in the game pieces is aligned with the polarity of the magnetic elements used in the projectile. The game pieces are marked on one side to signify the magnetic polarity and thus which side should be placed against the target allowing for magnetic attraction to the magnetic elements contained in the projectile.
Another object of the invention is a magnetic game piece that has a protrusion that can interface with the opening of the projectile. The opening of the projectile may encircle the protrusion upon impact resulting in a scoring mechanism for game play. The game piece with the protrusion has magnetic elements with sufficient force to minimize movement on the board when impacted with the projectile. The game piece with protrusion has two magnetic elements, allowing it to be placed securely in the center of the target, bridging the gap between the ferrous elements of the target needed to create the folding hinge.
Another object of the invention is a projectile with appendages that allow for the overlapping of game pieces on the target surface while maintaining contact with target after impact. The appendages have magnetic elements that allow for the projectile to remain in contact with a ferrous target surface after impact. The magnetic elements are placed near the terminating end of the appendage to allow for the appendages to sufficiently overlap the magnetic game pieces and maintain magnetic adhesion to the target surface after impact. The projectile is best configured with three appendages. The use of three appendages has the advantage of providing a stable aerodynamic shape that will move through the air in a position parallel to the vertical surface of the target. With one appendage, the projectile's center of mass is out of balance and aerodynamic forces with cause the projectile to deviate from a straight path. With two appendages, the projectile may have stable pitch or yaw during flight, but not both, causing the projectile to flip or spin away from the desired parallel orientation, which prevents the magnetic elements from achieving sufficient contact with the ferrous target surface upon impact and falling off the target. Three appendages allows for pitch and yaw to be stabilized during flight, maintaining the desired orientation for impact on the target. More than three appendages create unwanted aerodynamic drag and incur unnecessary material expense. Three appendages are also best as it creates a tripod, which is the most stable formation for the adhesion of the projectile to the target surface with the minimum of material.
Another object of the appendages is to be flexible. The appendages are flexible so that they can bend around the the uneven surface created by the magnetic game pieces that are bonded to the target surface and still maintain magnetic adhesion to the target surface after impact. Flexibility of the appendages also increases the success of adhesion to the target surface as it dampens rebounding forces created by the projectile upon impact.
Another object of the appendages is to be rigid enough to dampen oscillating motion during flight. When the projectile is launched from the sticks, the weight of the magnets at the tips of the appendages causes the appendages to bend due to the inertial forces of the magnetic element being at rest, and the center projectile ring being in motion. When the magnetic elements gain momentum, they begin to oscillate, bending the appendage forward and backwards during flight. If the appendages do not have sufficient rigidity to dampen this oscillation, the magnetic elements will not be in proper position to make contact with the ferrous target upon impact. The heavier the magnetic elements, the more rigidity is required for the projectile to successfully orient and adhere to the target and/or overlap any game pieces. During launch and flight, the appendages should not bend at an angle of more than 45 degrees from the force of acceleration, nor should they continue to bend from the result of oscillation during flight after a distance of 2 meters at an angle of more than 20 degrees.
Another object of the appendages is for them to be short and rigid enough to prevent the magnetic elements attached to the ends of the appendages from bonding to each other. If the magnets attach during the launching process or during flight, the aerodynamic qualities of the appendages are compromised, as well as the projectile's ability to correctly orient itself for successful adherence to the ferrous target.
Another object of the appendages is for them to be of sufficient length to overlap game pieces upon impact with the ferrous target. The magnetic elements at the terminating end of the appendages should be of sufficient distance from the outside perimeter of the annular projectile to bridge the distance between the target surface and the projectile when the projectile is overlapping a game piece or another projectile bonded to the target surface. This distance is determined by the thickness of the game pieces being overlapped. When the projectile is overlapping a game piece, the appendage should not have to bend at an angle of more that 45 degrees for the magnetic elements at the tips of the appendages make full contact with the surface of the target. The best use is for the appendages to be of a length from the perimeter of the annular projectile of 25 to 50 mm. The distance from the outside perimeter of the annular projectile to the outside perimeter of the magnetic element assembly should be 10-25 mm. A longer length requires a thicker or more rigid appendage material to be used so that it conforms to the oscillation dampening requirements.
The material used for the appendage is a neoprene laminated with nylon fabric. The neoprene core is between 3-5 mm, and more preferably 4 mm in thickness. Neoprene has the best combination of flexibility and rigidity that gives the projectile stable flight and the ability to adhere to the ferrous target even when overlapping game pieces on the board. The elastic quality of neoprene also allows for the projectiles to be removed from the ferrous target repeatedly without damage or deformation despite the strong magnetic forces that bond it to the target. Neoprene appendages 4 mm in thickness is preferably over 3 or 5 mm. At 3 mm the appendages show more oscillation. The increase oscillation of the neoprene appendages prevents magnetic elements from making full contact with the surface target with enough consistency. If the projectile fails to make consistent or regular contact with the target surface, players lose interest. At 5 mm the neoprene appendages lack enough flexibility to bend around the uneven surfaces created by the magnetic game pieces that are bonded to the target surface and still maintain magnetic adhesion to the target surface after impact. Other materials of similar flexibility and durability may be used, such as but not limited to EVA foam, silicon rubber, natural leather, polymers, latex rubber, cloth, as well as laminates of these materials combined to achieve the desired properties.
Another object of the invention is a method for attaching magnetic elements to the projectile's appendages. Because of the repeated impact forces that the projectiles endure during game play, the magnets are attached to the neoprene appendages by means of a metal screw that passes through an opening in the center of the magnet. The magnet has a circular opening with a countersunk bevel to receive the screw and have a flush surface so the screw does not protrude from the surface of the magnet. The metal screw uses a star shaped hole for tightening that requires a special tool not commonly available, adding an extra element of safety to the design. A plastic socket with an opening to allow the screw to pass through and an opening the size of the magnet's diameter to receive the magnet comprise one side of the attachment method. A plastic cap on the opposite side of the neoprene that receives the screw comprises the other side of the attachment method. The screw is passed through an opening in the neoprene and then tightened into the receptacle of the plastic cap. The plastic cap and plastic socket also have elements that connect through the opening of the neoprene that allow for the cap and socket to be sonic welded. The opening in the socket has a depth equal to the thickness of the magnet so the magnet is flush with the outer surface of the socket. The socket has a rounded edge to minimize damage to objects or walls that may be struck accidentally during game play. The magnet, socket and screw have a flush outer surface when assembled to minimize damage to the target surface and any objects or wall that may be struck accidentally during game play.
Another object of the invention is propulsion sticks and projectiles of a certain weight that is optimum for the physical action of launching the projectile. A projectile that is too heavy requires extra effort on part of the persons launching the projectile, which can negatively affect targeting accuracy. A projectile that is too light easily succumbs to unwanted aerodynamic forces that create an erratic flight path. The weight of the sticks also affects the physical action of launching the projectile. The sticks should be between 5 and 10 grams, and the projectile is at an optimum weight between 1.5 and 3 grams. The sticks are comprised of solid pulltruded fiberglass, allowing for a thin diameter and high rigidity. Other materials may be used with similar density, texture and weight. For instance sticks made of fiberglass are too light and the physical feedback is not as enjoyable for players.
Another object of the invention is a ferrous target that provides a rigid surface for the projectiles to impact that is folded by means of a hinge on the horizontal centerline of the target. A rigid surface, as opposed to flexible magnetically receptive surfaces used in other magnetic dart games, has the benefits of minimizing vibration from impact by the projectile, which can dislodge magnetic game pieces bonded to the board. Another object of the rigid and foldable target is that it can be leaned against another object and still maintain it's shape when the target is turned 90 degrees so that the hinge is oriented in a vertical direction. This allows the target to be used in locations where a hanging mechanism is not available. The radial symmetry of the graphic on the target allows for the game to be played in either an upright or sideways orientation. Another object of having a rigid folding target is that the magnetic game pieces can be left on the surface of the target when it is folded, allowing for game players to leave their pieces in place, thus saving the scoring for the game when the target is being transported in the folded position, and eliminating the need for a separate carrying mechanism for the game pieces.
Another object of the inventions is to use the sticks used for propelling the projectile as a handle integrated into the target for portability. When hanging, the sticks can be stored in a sleeve sewn at the bottom edge of the target. When folded, an opening in the sleeve allows for the sticks to serve as a handle mechanism.
Another object of the invention is to have a mechanism for hanging the target that also serves as a receptacle for storing a game piece that has a protrusion, allowing for all the game pieces to be stored on the board without needing an extra pocket or receptacle. The game piece with the spike shaped protrusion is used as a scoring mechanism. If the opening of the projectile encircles the protrusion of the game piece, a scoring event happens. The game piece with protrusion has two magnetic elements, allowing it to be placed securely in the center of the target, bridging the gap between the ferrous elements of the target needed to create the folding hinge.
c show the projectile and the rods and demonstrates the method for launching the projectile.
d show various targets that can be used to judge the accuracy of the projectile's trajectory.
The projectile as shown in
The projectile as shown in
The projectile as shown in
d demonstrate various methods the projectile can interact with targets.
c demonstrate a rigid ferrous target with folding hinge. The target is comprised of an inner ferrous layer 59, a target surface layer 57, and an outer covering layer 58. The target surface layer 57 is comprised of a flexible, water resistant film such as, but not limited to, vinyl or PVC vinyl, which is lightly textured to improve the bonding of the magnetic game pieces 63. The target surface has a graphic 52 printed on the surface to denote scoring mechanisms for game play. The outer covering 58 is comprised of a flexible water resistant film such as but not limited to vinyl or PVC vinyl. The outer, inner, and target surface layers are laminated together. The inner ferrous layer is comprised of two elements 59-60, arranged with a gap 62 between the two elements horizontally aligned on the center of the target. The outer layers are bonded along the space in this gap 62 to create a hinge 64. The outer layers extend beyond the inner ferrous layer on the bottom side and are folded and bonded horizontally with a seam 53 to create a sleeve 53.1 that houses the sticks. One side of the sleeve opening is bonded with a seam to create at terminus of the sleeve opening 53.2. A tab of flexible material 56 is folded over the opposite opening of the sleeve to secure the sticks 54 once they are positioned inside the sleeve. The tab is secured with a temporary bonding mechanism 56.1 such as Velcro or a snap. An opening cut into the sleeve 55 exposes the sticks and creates a space for manually gripping the sticks that is used as a handle for transporting the target. When folded, the target has an opening 51 to allow a game piece with a protrusion 61 to be contained within the target while bonded to the playing surface. An opening in the inner ferrous layer and both outer layers receive a grommet 51.1 that the protrusion of the game piece passes through. Other game pieces 63 may also be stored on the playing surface while folded.
This application is a continuation-in-part application of U.S. Ser. No. 13/355,434, filed on Jan. 20, 2012, which claims benefit to U.S. provisional application Ser. No. 61/434,746 filed Jan. 20, 2011, the disclosures of which are incorporated in their entirety by reference herein.
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Number | Date | Country | |
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20170304700 A1 | Oct 2017 | US |
Number | Date | Country | |
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61434746 | Jan 2011 | US |
Number | Date | Country | |
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Parent | 13355434 | Jan 2012 | US |
Child | 14278302 | US |