Patents by Inventor Yuzuru Uehra

Yuzuru Uehra 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).

  • Air conditioner having high heating capacity
    Patent number: 5370307
    Abstract: An air conditioner has a heating capacity which is increased with a compressor driven by an engine when an outdoor temperature is too low. A work load of the compressor is increased by injecting refrigerant into the compressor via an injecting port. As a result, a load of the engine is also increased so that a coolant temperature is also increased. A large heat radiation from the hot coolant to the indoor air is established at a coolant heat exchanger.
    Type: Grant
    Filed: September 23, 1992
    Date of Patent: December 6, 1994
    Assignee: Gas Research Institute
    Inventor: Yuzuru Uehra