Patents by Inventor Joon Ho Han

Joon Ho Han 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: 5217096
    Abstract: A brake holding system for a vehicle, comprising a vacuum magnetic member, a brake pedal extension arm which is attached to a push rod which, in turn, is connected to the master cylinder. The brake holding system can be actuated by a vacuum magnetic member when the speed of the vehicle is reduced to 0 mph under activation of a plurality of sensors while the vehicle is completely stopped.
    Type: Grant
    Filed: March 12, 1992
    Date of Patent: June 8, 1993
    Inventor: Joon Ho Han
  • Patent number: 4848029
    Abstract: A watering device for plants which comprises horizontal parallel pivot rods and a plant container which is balanced on one of the horizontal pivot rods by an adjusting weight member slidably disposed at the other horizontal pivot rod, and a water reservoir tank is operatively associated with the plant container so that as the plant container becomes lighter as to a loss of water. The adjusting weight member operatively associated with the plant container actuates a valve in the water reservoir tank through a transfer member mounted to third one of horizontal parallel pivot rods and transfer water from the water reservoir tank to the plant container until a balance is again achieved, and when the balance is reached, the valve in the water tank is again closed.
    Type: Grant
    Filed: March 9, 1988
    Date of Patent: July 18, 1989
    Inventor: Joon Ho Han
  • Patent number: 4646903
    Abstract: A brake holding system for vehicles, comprising a vacuum and magnetic device including a brake holder, a moon gear having a plurality of teeth, a push rod connected to a master cylinder, a holding switch positioned for easy accessibility near the vehicle operator and a brake releasing switch operatively associated with the accelerator. The brake holding system can be placed into position after the vehicle is stopped, for example, at a stoplight, by actuating a switch. The brake is then automatically unlocked by depressing the accelerator pedal. Also, the driver can pull an emergency handle to mechanically release the brake.
    Type: Grant
    Filed: August 8, 1985
    Date of Patent: March 3, 1987
    Inventor: Joon Ho Han