Source: http://www.google.com/patents/US20020070501?ie=ISO-8859-1
Timestamp: 2014-12-28 03:14:07
Document Index: 231824628

Matched Legal Cases: ['art. 13', 'art 88', 'art 130', 'art 130', 'art 130', 'art 130', 'art 130', 'art 130', 'art 130', 'art 130', 'art 130', 'art 130', 'art 130', 'art 130']

Patent US20020070501 - Electric dart game - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsAn electronic dart game includes a dart and a dartboard provided with a frame and a main body for being shot by the dart. The dart game can be scored automatically for being provided a plurality of inductance coils on the frame and connected to a electronic scoring means. A point or a slender shaft of...http://www.google.com/patents/US20020070501?utm_source=gb-gplus-sharePatent US20020070501 - Electric dart gameAdvanced Patent SearchPublication numberUS20020070501 A1Publication typeApplicationApplication numberUS 09/973,285Publication dateJun 13, 2002Filing dateOct 9, 2001Priority dateDec 11, 2000Also published asCA2358751A1, CA2358751C, CN2459611Y, DE10153557A1, US7624988Publication number09973285, 973285, US 2002/0070501 A1, US 2002/070501 A1, US 20020070501 A1, US 20020070501A1, US 2002070501 A1, US 2002070501A1, US-A1-20020070501, US-A1-2002070501, US2002/0070501A1, US2002/070501A1, US20020070501 A1, US20020070501A1, US2002070501 A1, US2002070501A1InventorsChia ShaoOriginal AssigneeShao Chia MuExport CitationBiBTeX, EndNote, RefManReferenced by (2), Classifications (5), Legal Events (3) External Links: USPTO, USPTO Assignment, EspacenetElectric dart gameUS 20020070501 A1Abstract An electronic dart game includes a dart and a dartboard provided with a frame and a main body for being shot by the dart. The dart game can be scored automatically for being provided a plurality of inductance coils on the frame and connected to a electronic scoring means. A point or a slender shaft of the dart is magnetized so that an electronic signal can be generated while the dart is shot to go through the inductance coils in accordance with the Lenz's law. Therefore, the chances for erroneous signal to occur are very slim. As the main body is designed directly to the frame, the dartboard has a stable one-piece surface, thus a player will have a similar satisfactory sensation as shooting onto a classical one-piece dartboard. Images(7) Claims(13)
What is claimed is: 1. An electronic dart game comprising a dart; a dartboard, provided with a frame, formed a plurality of scoring areas by a plurality of radial spiders and circumferential spiders which are arranged crossly; a main body for being shot by said dart, attached with said frame; and an electronic scoring means for displaying signals collected from said scoring areas, wherein said dart game comprises a plurality of inductance coils with predetermined turns, provided with said frame and connected to said electronic scoring means through cables; and said dart is magnetic substance. 2. An electronic dart game according to claim 1, wherein said a plurality of inductance coils are provided with predetermined shape to be engaged with said scoring areas. 3. An electronic dart game according to claim 2, wherein cross-section of each turn of said inductance coil matches and is smaller than that of said scoring areas. 4. An electronic dart game according to claim 3, wherein said frame provided with said inductance coil is arranged in front of said main body. 5. An electronic dart game according to claim 3, wherein said frame provided with said inductance coil is arranged in back of said main body. 6. An electronic dart game according to claim 3, wherein said frame provided with said inductance coil is arranged in said main body. 7. An electronic dart game according to claim 3, wherein a plurality of said coils corresponded to different scoring areas representing the same score, are wired together before being connected to said electronic scoring means. 8. An electronic dart game according to claim 1, wherein a point of said dart is magnetic substance. 9. An electronic dart game according to claim 8, wherein a slender shaft of said dart is magnetic substance. 10. An electronic dart game according to claim 9, wherein said point and slender shaft of said dart are integrated and magnetized simultaneously. 11. An electronic dart game according to claim 1, wherein said main body of said dartboard is made of bristle, natural fiber, synthetic fiber, plastic or the combination thereof. 12. A method of automatic scoring for an electronic dart game as claim 1, comprising the step of: dividing a dartboard into a plurality of areas by utilizing a frame and establishing a score for said each areas; attaching a main body for being shot by a dart to said frame; providing a plurality of inductance coils in predetermined shape engaged with said areas on said frame and connecting said coils to a scoring means of said dart game; magnetizing a point and slender shaft of said dart for changing distribution of magnetic field of said inductance coil at the moment of said main body of said dartboard being shot by said dart. 13. A method according to claim 12, comprising the step of: providing cross section of said each turn of said inductance coil to be smaller than that of said related areas; wiring said coils representing the same score all together before being connected to a electronic scoring unit.
FIELD OF THE INVENTION [0001] The present invention relates to an electronic dart game, particularly to a dart game with improved performance based on the principle of electromagnetic induction. BACKGROUND OF THE INVENTION [0002] Traditionally, a dart game is scored manually. In recent years, electronic dartboards have become popular as scoring can be done automatically by providing an electronic scoring means in those dart game. For example, U.S. Pat. No. 6,089,571 discloses an interesting electronic dart game, as shown in FIG. 1. In the material of prior art, the surface of a dartboard is divided into several independent scoring sections 42. Each scoring section 42 is loosely attached to the dartboard and electrodes of a switch provided respectively on conductor sheets 31 and 33 is under each scoring section 42. When a dart (not shown) hits a specific scoring section 42 on the dartboard, the impact causes the section 42 to push against the electronic switch underneath, thus, send an electronic signal to an electronic scoring machine 10. [0003] According to the disclosure of the prior art, referring to FIG. 2, the slide 70 and the block 80 may be moved inward of the frame 40 against the springs 74 when the block 80 is shot by a dart 88. Obviously, the structure of the prior art for arranging the conductor means is complex and it is not very easy to mount as its precision for locating switch on resilient sheets 31 and 33. [0004] In addition, since the individual sections on the surface of the dartboard of the prior art are provided to be attached on the dartboard, the drawbacks of the prior art are also difficult to overcome. Referring to FIG. 3, the slides 70 each includes one or more pins 71 for engaging into the block 80 and for securing the block 80 to the slide 70. Thus it is easy to understand that the attachment between the blocks 80 and the dartboard are not in firmness manner and it can cause others drawbacks. Firstly, When a dart hits a specific section on the dartboard, other sections on the dartboard may also vibrate and may trigger other membrane switches, thus it not only causes confusion in scoring, but also the player can not have the same satisfactory sensation in comparison with an ordinary dart game. Secondly, removing a dart from any unstable section is not very easy. SUMMARY OF THE INVENTION [0005] An object of the present invention is to provide an electronic dart game having a plurality of inductance coil and a magnetic dart to be used for scoring. [0006] Another object of the present invention is to provide a method of automatic scoring for a dart game based on the principle of electromagnetic induction. [0007] To achieve the above purpose, there is provided an electronic dart game comprising a dart; a dartboard, provided with a frame, formed a plurality of scoring areas by a plurality of radial spiders and circumferential spiders which are arranged crossly and a main body for being shot by the dart, attached with the frame; and an electronic scoring means for displaying signals collected from the scoring areas, wherein the dart game comprises a plurality of inductance coils with predetermined turns, provided with the frame and connected to the electronic scoring means through cables; and the dart is magnetic substance. [0008] In accordance with the present electronic dart game, the a plurality of inductance coils are provided with predetermined shape to be engaged with the scoring areas. [0009] In accordance with the present electronic dart game, cross-section of each turn of the inductance coil matches and is smaller than that of the scoring areas. [0010] In accordance with the present electronic dart game, the frame provided with the inductance coil is arranged in front of the main body. [0011] In accordance with the electronic dart game, the frame provided with the inductance coil is arranged in back of the main body. [0012] In accordance with the electronic dart game, the frame provided with the inductance coil is arranged in the main body. [0013] In accordance with the electronic dart game, a plurality of the coils corresponded to different scoring areas representing the same score, are wired together before being connected to the electronic scoring means. [0014] In accordance with the present electronic dart game, a point of the dart is magnetic substance. [0015] In accordance with the present electronic dart game, a slender shaft of the dart is magnetic substance. [0016] In accordance with the present electronic dart game, the point and slender shaft of the dart are integrated and magnetized simultaneously. [0017] In accordance with the present electronic dart game, the main body of the dartboard is made of bristle, natural fiber, synthetic fiber, plastic or the combination thereof. [0018] A method of automatic scoring for an electronic dart game, comprises the step of: dividing a dartboard into a plurality of areas by utilizing a frame and establishing a score for the each areas; attaching a main body for being shot by a dart to the frame; providing a plurality of inductance coils in predetermined shape engaged with the areas on the frame and connecting the coils to a scoring means of the dart game; magnetizing a point and slender shaft of the dart for changing distribution of magnetic field of the inductance coil at the moment of the main body of the dartboard being shot by the dart. [0019] In accordance with the present method comprises the step of: providing cross section of the each turn of the inductance coil to be smaller than that of the related areas; wiring the coils representing the same score all together before being connected to a electronic scoring unit. [0020] In one aspect of the present invention, present dart game has a stable one-piece surface so that the player has a similar satisfactory sensation as shooting onto a classical one-piece dartboard. [0021] In another aspect of the present invention, as a plurality of electromagnetic induction coils are firmly attached to the stable one-piece surface, the electronic scoring signal is generated only at the moment the dart hitting the scoring areas on the dartboard, the chances for erroneous signal to occur is very slim. [0022] In accordance with further aspect of the present invention, the dart is easier to remove from the dartboard in comparison with the electronic dart game of the prior art.
BRIEF DESCRIPTION OF THE DRAWINGS [0023] With reference to the following drawings, the preferred embodiments of the present invention shall be illustrated in detail. [0024]FIG. 1 is an exploded view of an electronic dart game of the prior art; [0025]FIG. 2 is a cross sectional view illustrating the operation of the switch used for conducting signal; [0026]FIG. 3 is a partial exploded view of the segment, in which the segment is shown up side down; [0027]FIG. 4 is a perspective view of the dartboard of the present invention, showing a frame formed by a circumferential and radial spider; [0028]FIG. 5 is a partial sketch view of a preferred embodiment of the dartboard of the present invention, on which is shot by the dart; [0029]FIG. 6 is a partial sketch view of another embodiment of the dartboard of the present invention, on which is shot by the dart; [0030]FIG. 7 is a partial sketch view of further embodiment of the dartboard of the present invention, on which is shot by the dart; [0031]FIG. 8 is a perspective view of the dartboard of the present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS [0032] The present electronic game comprise a dartboard having a number of scoring areas for being shot by player and an electronic scoring means for displaying signals collected from the scoring areas. [0033] Now referring to FIG. 4, the dartboard of the present invention includes a frame 100 and main body 110 attached to the frame 100. A plurality of scored areas 102 is formed by a plurality of radial spiders 106 and circumferential spiders 104 which are arranged crossly each other. Each of the scoring areas 102 is respectively provided with a inductance coil 120. Each of coils 120 may be made up of several turns and each turn is needed to form a predetermined shape in order to match the scoring areas 102. As matter of fact, cross-section of each turn of the inductance coil 120 is smaller than that of scoring areas 102 to ensure that coil 120 can be provided on the frame 100 completely. In addition, the inductance coil 120 is connected to a control unit of an electronic scoring means designed in the present dart game (not shown) through cables 122, which can display signals collected from the scoring areas 102. [0034] Various score are assigned to the scoring areas 102 in the dartboard. It is possible that some of areas 102 will be evaluated the same score. Preferably, a plurality of the coils 120 of the present invention corresponded to different scoring areas 102 representing the same score, are wired together before being connected to the electronic scoring means (not shown). [0035] The main body 110 of the dartboard is attached to the frame 100 and used for being shot by the dart 130. Therefore the main body 110 should be made of bristle, natural fiber, synthetic fiber, plastic or the combination thereof. In accordance with the present invention, the structure of the dartboard is substantially as simple as the traditional manual one and is easy to operation, as the inductance coils 120 can be directly provided on the frame 100. In addition, the frame 100 and main body 110 of the dartboard can be arranged in flexible manner. Referring to FIG. 5, in the first preferred embodiment, the frame 100 provided with the inductance coil 120 of the present invention is arranged in front of the main body 110. In the second embodiment, as shown in FIG. 6, the frame 100 provided with the inductance coil 120 is arranged within the main body 110. Obviously, the frame 100 provided with inductance coil 120 can be arranged in back of the main body 110, as shown in FIG. 7. [0036] To achieve the object of the present invention, another essential part of the present invention is the dart 130, as shown in FIG. 8. The dart 130 usually comprises a point 132; a slender shaft 134 and a tail fin 136. Particularly, the dart 130 of the present invention is magnetic substance. That is, a slender shaft 134 and the point 132 can be magnetized respectively or be integrated and magnetized simultaneously. [0037] When the dart 130 with a magnetic point 132 is shot onto the main body 110 of the dartboard, the instantaneous displacement of the magnetic point 132 through the coil 102 induces a current or voltage signal on the coil 102 in accordance with Lenz's law; the signal can be amplified in a signal processor (not shown). Then the amplified electronic signal will be transmitted to an electronic scoring means (not shown) to engage in calculation and display. Once the dart 130 is stuck on the dartboard, there is no more induction current. [0038] Because the instantaneous electronic signal is induced only at the moment the magnetic point 132 of the dart 130 is moving through the coil 102, confusion in electronic scoring can be avoided. [0039] It is necessary to point out that the magnetic part of the dart 130 needn't go through the coil 130 completely; an electronic signal can be inducted even when the dart 130 closing with the coil 130, as magnetic lines of force around the dart 130 has already cut by the coil 102, as shown in FIG. 5. [0040] Furthermore, the electronic signal of the present invention to be in calculation and display is generated by magnetic lines of force of the dart 130 cutting the coil 102 when the dart 130 is shot to go through the object areas. The intensity of electronic signal will depend on the elements, such as density of magnetic lines of force, turns of coil and rapidity for cutting magnetic lines of force etc. In other words, the generated signal dimension is in direct proportion with these elements. Therefore, the manner for enhancing the magnetism of dart to increase the density of magnetic lines of force or increasing turns of coil or increasing rapidity of dart can be applied if the control unit of the present dart game requires a rather large signal. Actually, it is better that the present invention needn't design much more turns in coil and thus costs for the present invention can be reduced accordingly, as the rapidity of the dart will be large enough to generate an available signal to be collected easily. In another aspects, an electronic signal can not be generated when the rapidity of the dart through the coil is lack, so the chances for erroneous signal to occur is very slim, such as when a player removing the dart from the dartboard. In other aspects, the signal of the present invention will be generated at the moment the dart hitting the dartboard and will disappear off the coil after the dart hitting the dartboard as the rapidity at the moment is zero. Therefore, the method of scoring at each time for the present invention is unique, even when the same object area is shot many times without removing the dart from the area, the signal can be collected exactly and the signal can be transmitted only from the coil surrounded the dart however the point shot by the dart is adjacent to another scoring areas. Therefore, the method of the present invention for scoring is accurate and applicable. [0041] The above description should not be construed as limiting the scope of this invention but as merely proving the illustration of some of the presently preferred embodiments of the invention. For example, the dartboard in the present invention and an electronic scoring means may be combined into one entity. Referenced byCiting PatentFiling datePublication dateApplicantTitleUS7163204 *Oct 18, 2005Jan 16, 2007Guten Electronics Industrial Co., Ltd.Dart and dartboard setWO2005078376A1 *Mar 22, 2004Aug 25, 2005Jiamu ShaoAn electronic dartboard and a magnetic dart* Cited by examinerClassifications U.S. Classification273/371, 273/374International ClassificationF41J5/04Cooperative ClassificationF41J5/04European ClassificationF41J5/04Legal EventsDateCodeEventDescriptionAug 24, 2013FPAYFee paymentYear of fee payment: 4Aug 24, 2013SULPSurcharge for late paymentJul 12, 2013REMIMaintenance fee reminder mailedRotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google