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| Number | Title | Issue Date |
| 5467856 | Gaming machine and method of detecting fraud in the same A slot machine has a coin sensor, which is connected to a CPU via a signal line, and generates a coin-detecting signal upon insertion of a coin. The slot machine stands by for execution of a game in response to the coin insertion, under the control of the... | 11/21/1995 |
| 5441447 | Coin dispenser and coin pay-out method A slot machine incorporates a coin dispenser, which has a discharge section that discharges a coin toward a discharge slot. A sensor is arranged at the discharge slot, and generates a detection signal upon detecting a coin. A counter counts the detection ... | 08/15/1995 |
| 5355988 | Coin supply device for coin-operated gaming machine A coin supply device includes a conveyor belt and a separating roller disposed above the conveyor belt. Upper coins of two or more overlapping coins are pushed back and separated by the separating roller rotating in a direction opposite to that of the con... | 10/18/1994 |
| 5152529 | Game machine A game machine displays in a display window a first and a second series of symbols in a column such that the first series of symbols are movingly displayed and thereafter a predetermined number of stationary symbols of the first series are displayed in a ... | 10/06/1992 |
| 5127651 | Slot machine In a slot machine, pay-out data about previous games that represent the relationship between a total number of inserted coins and a total number of paid coins, are stored and displayed. There is further provided a game simulation device which simulates th... | 07/07/1992 |
| 5018737 | Slot machine A slot machine having a drive controller for changing the time required for series of symbols to decelerate and stop. For a game that can result in a hit, the series of symbols are controlled to stop by the required stop time set, e.g. longer than that fo... | 05/28/1991 |
| 5010995 | Slot machine A slot machine of the type having a plurality of rotatable reels, each bearing an annular row of various symbols on the outer surface thereof, which selects combinations of symbols at random during each game, and which awards prize coins when predetermine... | 04/30/1991 |
| 4993713 | Game machine A game machine comprises hit flag counters which count up each hit request and count down upon the occurrence of each hit game. In these hit flag counters, if a hit cannot occur in spite of a hit request, the hit request is stored for the following games ... | 02/19/1991 |
| 4964638 | Control apparatus for game machines In a control system wherein a master control unit controls a plurality of game machines, the master control unit is provided with two calculators and a microprocessor. The two calculators accumultate, at different rates, values each corresponding to the n... | 10/23/1990 |
| 4912389 | Rotary position detector for stepping motor A sector is provided on a rotary shaft of a stepping motor. Two end edges of this sector define two reference positions. When a sensor detects one of the end edges, a reset signal generator generates a reset signal to reset a counter which counts driving ... | 03/27/1990 |
| 4902263 | Coin lifting device A rotating disk is rotated about an upright axis to feed coins placed thereon toward a rotating body. The rotating body is formed with a spiral groove in which the periphery of each coin is inserted and a guide barrel is disposed in such a manner as to ma... | 02/20/1990 |
| 4889339 | Slot machine A slot machine has a single stop button which is manipulated by a player every time it is desired to stop a plurality of moving symbol columns one after another. A selection device selects a symbol column to be stopped every time the stop button is manipu... | 12/26/1989 |
| 4826169 | Slot machine with a marker symbol A slot machine. In one embodiment, a given symbol is included in each of a series of symbols, and a judgment device is provided for locating the positions of a plurality of given symbols appearing within the windows but not all on the prize-winning line, ... | 05/02/1989 |
| 4822318 | Coin dispenser A coin dispenser for discharging coins stored in a bucket in an automatic vending machine, a money exchanging machine, a coin-operated amusement machine such as a slot machine and the like, comprising a bucket for storing a number of coins therein which h... | 04/18/1989 |
| 4802380 | Handle control for a slot machine A handle control device for a slot machine in which a handle is operated to start a game, includes a rotatable wheel supported on a fixed shaft for rotation with the handle. Unidirectionally but oppositely rotatable clutch wheels are mounted on the fixed ... | 02/07/1989 |
| 4773647 | Slot machine with stop switch enablement after attainment of minimum reel speed A slot machine of the type having a plurality of reels and pulse motors for rotating the respective reels wherein the pulse motors can be stopped individually by touching stop switches provided one for each of the respective reels. Every stop switch is pr... | 09/27/1988 |
| 4772023 | Slot machine A slot machine having X series of symbols arranged side by side which selects a combination of symbols on a winning line. For the selection of a combination of symbols, a random number is sampled from a series of random numbers the number of which is 2 | 09/20/1988 |
| 4772022 | Apparatus for stopping the reels of a slot machine An apparatus for stopping a reel of a slot machine is provided, wherein the reel is rotated by a stepping motor which is driven with multi-phase drive pulses sequentially offset in phase. The apparatus includes a stop signal generator for generating a sto... | 09/20/1988 |
| 4765078 | Reel assembly for slot machines A reel assembly which comprises right and left halves of a reel interconnected by a connecting member. The width of the reel assembly is adjusted by the length of the connecting member. The right and left halves of the reel each have a rim and a holding r... | 08/23/1988 |
| 4752069 | Video game which instructs the user how to play A video game apparatus has a display device for displaying visual images showing the progress of the game. An operating member is manipulated by the player in accordance with instructions displayed on a video screen within a period of time and preferably ... | 06/21/1988 |
| 4741532 | Reel drive device for slot machine A reel of a slot machine is rotatably fitted on a shaft of a motor and coupled to the shaft by an elastic member. When the motor is started, energy is stored in the elastic member, and the reel is suddenly caused to start rotation at a high speed by the e... | 05/03/1988 |
| 4721307 | Slot machine A slot machine having a plurality of symbol series disposed side by side and movable lengthwise independently, selects a combination of symbols on a winning line which is judged as to whether it coincides with any one of the predetermined prize-winning sy... | 01/26/1988 |
| 4718672 | Slot machine In a slot machine, a specific winning line among a plurality of winning lines, e.g., an effective winning line or a winning line on which a winning symbol array appears, is optically identified. To identify a winning line or lines, series of light emittin... | 01/12/1988 |
| 4715604 | Slot machine A slot machine which selects combinations of symbols on prize-winning lines by causing a plurality of lengthwise movable symbol rows arranged side by side, each of which comprises a plurality of kinds of symbols arranged at regular distances thereon, to m... | 12/29/1987 |
| 4700948 | Slot machine with playing card symbols A slot machine having five rotatable reels, each bearing on its outer periphery symbols of at least twelve different playing cards consisting of at least three cards of each suit and four out of 20 different cards consisting of the aces, tens and face car... | 10/20/1987 |
| 4687981 | Stepping motor A stepping motor having a rotary shaft carrying a rotor, a stator, a housing encasing the rotor and a part of the rotary shaft and supporting the stator, and a signal system comprising a signal member provided on the rotary shaft and a sensor so disposed ... | 08/18/1987 |
| 4679789 | Video game apparatus with automatic skill level adjustment In a video game apparatus, as a game progresses, whether or not an operation section has been operated by a player within a permissible timing set in a reference table is judged by a judgement section, and the game success or failure is determined upon th... | 07/14/1987 |
| 4657256 | Slot machine with win/loss biasing means A slot machine has a game number counter which cumulatively counts the number of games played. Whether the number of games counted by the game number counter reaches a predetermined number or not is detected by a comparator; and if both numbers coincide, ... | 04/14/1987 |
| 4657247 | Video game apparatus with automatically adjusting timing window A video game apparatus which judges a game success if the operation timing of an operation member manipulated by a player in accordance with a displayed game image falls within an allowable time limit for game success set in a range setting unit. The appa... | 04/14/1987 |
| 4634126 | Device for converting the amount of a mechanical displacement into electrical signal A transducer converts the amount of mechanical displacement of a member into an electrical signal by magnetic induction. Two fixed coils different in winding direction from each other are spaced apart from each other by a suitable distance and connected i... | 01/06/1987 |
| 4621815 | Reel assembly for slot machines A slot machine reel comprises a cylindrical body having symbols on the periphery thereof and a reinforcing plate fixed to the cylindrical body and coupled therethrough to a drive shaft of a motor. The cylindrical body has a bridge fixed thereto and includ... | 11/11/1986 |
| 4618150 | Game machine with selective stop means for moving display A game machine has indicia which indicate the proper time to control visible moving symbols. The indicia comprise lights or sounds to make a player recognize the proper time when predetermined prize-winning symbol or combination of symbols will occur on o... | 10/21/1986 |
| 4597309 | Device for regulating the direction of rotation of slot machine handle A device for regulating the direction of rotation of a slot machine handle is disclosed, which ensures reliable forward and return motions of the handle. A rack member is moved through a guide member in an interlocked relation to the handle. A rachet pawl... | 07/01/1986 |
| 4573681 | Slot machine with random number generation A slot machine is provided which has a winning probability table for storing a relation between a group and random numbers, the group being one of a plurality of groups made up by classifying prize-winning symbol combinations. The range of random numbers ... | 03/04/1986 |
| 4557483 | Ball shooting apparatus for pinball game machine Two cylindrical stator magnetic poles are disposed with a suitable space therebetween, and a plunger is movably disposed within the two stator magnetic poles. A coil is wound around the outer periphery of the two stator magnetic poles, and a current flowi... | 12/10/1985 |
| 4556140 | Method and apparatus for discriminating coins or bank notes A method and apparatus for discriminating coins or bank notes, in which sensors measure characteristics of coins or bank notes. Processing control apparatus provides a reference value setting mode and a discrimination mode. In the reference value setting ... | 12/03/1985 |
| 4541444 | Device for detecting the amount of coins in hopper device A hopper device has an insulating hopper member. A first electrode is mounted in the inner side of the hopper member in a lowermost portion thereof, and at least one second electrode is mounted in the inner side of the hopper member in a portion thereof a... | 09/17/1985 |
| 4534560 | Slot machine A slot machine has a plurality of reels, each having an annular series of various symbols on the periphery thereof and having, on a side thereof, a plurality of light shield plates different in shape from each other for distinguishing regions into which t... | 08/13/1985 |
| 4524636 | Slot machine handle locking device A device for locking a slot machine handle for causing the rotation of reels until a coin is inserted, is disclosed. When a coin is inserted, a solenoid is activated to move an interlock lever from a first position to a second position. When the interlock... | 06/25/1985 |
| 4522399 | Device for generating impact sound for slot machine A device for generating an impact sound for a slot machine is disclosed, which is constructed to intentionally produce an impact sound when reels start to be rotated by motors. An operating member is rotated in an interlocked relation to the rotation of a... | 06/11/1985 |
