Patents by Inventor Miyuki Tarusawa

Miyuki Tarusawa 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).

  • Fuel injection device having heater
    Patent number: 6561168
    Abstract: A nozzle needle has a hollow tubular form having a closed base end. A heat transfer tube is press fitted into a first magnetic portion. The heat transfer tube surrounds an outer peripheral surface of the nozzle needle. A ceramic heater is formed as an integral cylindrical body by sintering a ceramic material together with a heat generating resistive element. A case covers the heater and protects the heater from externally applied water. An inner tube of the case is resiliently engaged with both the heater and the first magnetic portion. Heat of the heater is conducted to the nozzle needle through the inner tube, the first magnetic portion and the heat transfer tube to heat fuel inside the nozzle needle.
    Type: Grant
    Filed: March 29, 2002
    Date of Patent: May 13, 2003
    Assignee: Denso Corporation
    Inventors: Takayuki Hokao, Miyuki Tarusawa, Hideto Takeda, Hiroshi Hasegawa
  • Fuel injection device having heater
    Publication number: 20020139871
    Abstract: A nozzle needle has a hollow tubular form having a closed base end. A heat transfer tube is press fitted into a first magnetic portion. The heat transfer tube surrounds an outer peripheral surface of the nozzle needle. A ceramic heater is formed as an integral cylindrical body by sintering a ceramic material together with a heat generating resistive element. A case covers the heater and protects the heater from externally applied water. An inner tube of the case is resiliently engaged with both the heater and the first magnetic portion. Heat of the heater is conducted to the nozzle needle through the inner tube, the first magnetic portion and the heat transfer tube to heat fuel inside the nozzle needle.
    Type: Application
    Filed: March 29, 2002
    Publication date: October 3, 2002
    Inventors: Takayuki Hokao, Miyuki Tarusawa, Hideto Takeda, Hiroshi Hasegawa