Patents by Inventor Yuan F. Chang

Yuan F. Chang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5509646
    Abstract: A money box with an anti-theft device includes a motor gear housing, a paper money pressing lid and a paper money stacking case. The motor housing had a pair of racks disposed at both side walls of the housing. The bracket is locked to the motor housing. A driving plate is connected to the driving shaft of the motor. A sliding block is sleeved onto the driving shaft of the motor. A connecting plate is attached to the connecting socket through a screw. A positioning plate is riveted to the rear corners of the motor gear housing. A circular slot is disposed at the upper portion of the paper money pressing lid. A pressing shaft and a spring are installed within the circular slot. A screw is used to connect the paper money shaft to the money pressing plate. A positioning shaft is further used to pass through the through hole of the paper pressing lid. Then a pair of screws are used to lock it. It can be positioned with the positioning plate. A clipping plate is attached to the button of the connecting socket.
    Type: Grant
    Filed: May 10, 1994
    Date of Patent: April 23, 1996
    Assignee: Gamemax Corporation
    Inventor: Yuan F. Chang
  • Patent number: 5485907
    Abstract: A paper money recognition and transmission system including a housing with a paper money slot, an upper mainframe and a lower mainframe detachably connected together and mounted inside the housing, a transmission unit mounted on the lower mainframe and consisting of a step motor, a belt transmission mechanism, a gear transmission mechanism, a plurality of caps, and two rubber rollers, a paper money recognition circuit, the paper money recognition circuit including sensors controlled to detect and recognize inserted paper money and to turn the step motor forwards, when a true paper money is recognized, causing the inserted paper money to be delivered forwards, the step motor being turned reversely when a counterfeit paper money is detected, causing the counterfeit paper money to be delivered backwards out of the system.
    Type: Grant
    Filed: August 23, 1994
    Date of Patent: January 23, 1996
    Assignee: Gamemax Corporation
    Inventor: Yuan F. Chang
  • Patent number: 5462150
    Abstract: A collecting device for currencies comprises a lower housing, a supporting bracket for the housing, an upper housing, a front lid and a rear housing. A plurality of rectangular openings and symmetrically disposed elongate slots are provided at the supporting plate. A conveyor is disposed between the basic slot and the rectangular openings of the supporting plate which extends also to another side wall. A pair of sensors are provided between the basic slot and the rectangular openings of the supporting plate. A pair of projecting pins and a positioning dowel are provided at both sides of the upper housing. Each of the projecting pins has a hook at the lower end thereof. The hook is engaged with the clipping hole of the side wall. The hole of the guiding plate can slide onto the dowel. A sensor is disposed in the upper housing to identify the paper currency. The upper housing is inserted into a locking-plate.
    Type: Grant
    Filed: May 9, 1994
    Date of Patent: October 31, 1995
    Assignee: Gamemax Corporation
    Inventor: Yuan F. Chang
  • Patent number: 5454462
    Abstract: A paper money recognition and transmission system including a housing with a paper money slot, an upper mainframe and a lower mainframe detachably connected together and mounted inside the housing, a transmission unit mounted on the lower mainframe and consisting of a step motor, a belt transmission mechanism, a gear transmission mechanism, a plurality of caps, and two rubber rollers, a paper money recognition circuit, the paper money recognition circuit including sensors controlled to detect and recognize inserted paper money and to turn the step motor forwards, when a true paper money is recognized, causing the inserted paper money to be delivered forwards, the step motor being turned reversely when a counterfeit paper money is detected, causing the counterfeit paper money to be delivered backwards out of the system, the lower mainframe having a convex portion matched with paper money transmission rubber rollers to prevent inserted paper money from being pulled backwards.
    Type: Grant
    Filed: October 25, 1994
    Date of Patent: October 3, 1995
    Assignee: Gamemax Corporation
    Inventor: Yuan F. Chang
  • Patent number: 5388817
    Abstract: A notes stacker assembly comprises a stacker assembly, a stacking mechanism and a notes collector. When the notes are feeded into an inserting slot of the receiving slot, the notes will be moved forward by the main actuating wheel together with the pulley and second actuating wheel. Then the notes are moved to transferring slot and enter into the slot member of said stacking mechanism. Meanwhile, a signal is sent to the printed circuit triggering the motor of the stacking mechanism. The cam shaft is then moved by the motor and actuating the upper slot hole of the U-shape guiding block. Then the sensor of the printed circuit is covered and switched on. When the guiding block and the pressing plate is moved downward by the cam shaft, the small holes of the guiding slot will make the sensor receive a signal that the guiding block is moved to a right position. This will make the notes be received by the pressing plate and spring member, and enter into the note collector.
    Type: Grant
    Filed: October 6, 1993
    Date of Patent: February 14, 1995
    Assignee: Gameax Corporation
    Inventor: Yuan F. Chang