1
Takashi Hagiwara: Slot machine. Sigma Enterprises Incorporated, Stevens Davis Miller & Mosher, February 21, 1989: US04805907 (591 worldwide citation)

This invention relates to a slot machine which comprises one main machine, and a plurality of subordinate machines connected to the main machine. Each subordinate machine comprises a slot, detecting means for sensing the coins betted in; and coin paying-out means.


2
Takashi Hagiwara: Multiline slot machine. Sigma Enterprises Incorporated, Koda and Androlia, June 13, 1989: US04838552 (363 worldwide citation)

A more sophisticated version of the known "crisscross" type of slot machine is disclosed. A screen has a plurality of display zones, usually notional, arrayed in rows and columns. A row of symbols are made to sequentially appear and randomly stop on each of the display zones, either electronically, ...


3
Katsuki Manabe: Roulette playing device. Sigma Enterprises Incorporated, Birch Stewart Kolasch & Birch, March 6, 1990: US04906005 (107 worldwide citation)

A roulette playing device includes a hitting device for releasing a ball onto a circular runway which comprises a first rotatable roller disposed upstream of an outlet, a second rotatable roller opposed to the first roller and spaced therefrom by a distance smaller than the diameter of the ball, and ...


4
Katsuki Manabe: Roulette playing device. Sigma Enterprises Incorporated, Birch Stewart Kolasch & Birch, September 26, 1989: US04869505 (20 worldwide citation)

A roulette playing device comprises a release opening for releasing a ball. The opening is formed in a circular wall at a position higher than the level where the ball runs on the outermost circumference thereof. The circular wall is preferably tilted from a vertical plane toward a roulette wheel. S ...


5
Katsuki Manabe: Roulette playing device. Sigma Enterprises Incorporated, February 5, 1991: US04989873 (14 worldwide citation)

A roulette playing device includes a hitting device for releasing a ball onto a circular runway which comprises a first rotatable roller disposed upstream of an outlet, a second rotatable roller opposed to the first roller and spaced therefrom by a distance smaller than the diameter of the ball, and ...


6
Takashi Hagiwara: Optoelectronic coin entry sensing system for coin operated machines. Sigma Enterprises Incorporated, Koda and Androlia, January 21, 1986: US04565275 (7 worldwide citation)

For electronically sensing the proper entry of a coin into a slot machine, vending machine or the like, an upstanding chute extending from the slot of the machine has two pairs of opposed apertures formed therein. A coin falling through the chute successively intercepts light beams emitted by extern ...


7
Hagiwara Takashi: Slot machine. Sigma Enterprises Incorporated, Hagiwara Takashi, INOMATA Kiyoshi, September 12, 1986: WO/1986/005113

A slot machine consists of one main unit, and a plurality of auxiliary units connected to the main unit. Each of the auxiliary units has at least a slot in which a coin is dropped, a means for detecting the dropping of a coin in the slot, and a means for dispensing coins. The main unit has a control ...


8
Hagiwara Takashi: Slot machine. Sigma Enterprises Incorporated, Hagiwara Takashi, INOMATA Kiyoshi, September 25, 1986: WO/1986/005407

In a slot machine using CRT displays, a game display picture frame is formed by arranging a plurality of CRT displays on a matrix. The game display picture frame may also be formed by arranging m x n pieces (wherein m and n are integers) of CRT displays in m lines in n rows on a matrix so as to enab ...