Patents by Inventor Yukinaga Tanigawa

Yukinaga Tanigawa 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).

  • Internal combustion engine having rotary engine body
    Patent number: 5429078
    Abstract: An internal combustion engine comprises a hollow rotary engine body, an axially opposite pair of main pistons capable of rotating with but slidably reciprocating relative to the engine body, a cam mechanism for causing the main pistons to make one full rotation with the engine body as the piston makes two reciprocations, and a pair of axially fixed auxiliary pistons coaxially inserted into the respective main pistons. A main combustion chamber is formed in the engine body between the main pistons, whereas a pair of auxiliary combustion chambers are formed in the respective auxiliary pistons. Explosive combustion takes place alternately in the main combustion chamber and each auxiliary combustion chamber.
    Type: Grant
    Filed: October 13, 1993
    Date of Patent: July 4, 1995
    Inventors: Hiroyasu Tanigawa, Kazunaga Tanigawa, Yukinaga Tanigawa
  • Internal combustion engine having rotary engine body
    Patent number: 5230307
    Abstract: An internal combustion engine comprises a hollow rotary engine body, an axially opposite pair of main pistons capable of rotating with but slidably reciprocating relative to the engine body, a cam mechanism for causing the main pistons to make one full rotation with the engine body as the piston makes two reciprocations, and a pair of axially fixed auxiliary pistons coaxially inserted into the respective main pistons. A main combustion chamber is formed in the engine body between the main pistons, whereas a pair of auxiliary combustion chambers are formed in the respective auxiliary pistons. Explosive combustion takes place alternately in the main combustion chamber and each auxiliary combustion chamber.
    Type: Grant
    Filed: September 24, 1992
    Date of Patent: July 27, 1993
    Inventors: Hiroyasu Tanigawa, Kazunaga Tanigawa, Yukinaga Tanigawa
  • Internal combustion engine having rotary engine body
    Patent number: 5133305
    Abstract: The present invention provides an internal combustion engine comprising a hollow engine body rotatable about a fixed shaft, a pair of pistons capable of rotating with but slidably reciprocating relative to the engine body, and a cam mechanism for causing each piston to make one full rotation with the engine body as the piston makes two reciprocations. A combustion chamber is formed in the engine body between the pair of pistons, whereas a pair of air supply chambers are arranged on the side of the respective pistons axially away from the combustion chamber. Each air supply chamber is highly compressed when the pistons are moved away from each other, and the resulting compressed air is utilized for scavenging, internally cooling and supercharging the combustion chamber.
    Type: Grant
    Filed: January 25, 1991
    Date of Patent: July 28, 1992
    Inventors: Hiroyasu Tanigawa, Kazunaga Tanigawa, Yukinaga Tanigawa