Patents by Inventor Masao Kamegasawa

Masao Kamegasawa 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: 5165253
    Abstract: A multiple cooling medium recovery apparatus comprising, a refrigerating circuit which circulates a refrigerant through a compressor, a condenser, an expansion valve, a heat exchanger with an evaporation path and a compressor, and a plurality of recovery routes separated from one another to which a plurality of kinds of cooling mediums to be recovered are supplied, respectively. A plurality of condensation paths are formed in the heat exchanger separaately from one another. Each recovery route defines a condensation path separately from the other recovery routes. A plurality of independent recovery routes are formed in a single recovery apparatus. A plurality of kinds of cooling mediums can be recovered simultaneously, or without cleaning the apparatus before each recovery.
    Type: Grant
    Filed: April 3, 1991
    Date of Patent: November 24, 1992
    Assignee: Sanden Corporation
    Inventors: Masao Kamegasawa, Keiichi Tomaru
  • Patent number: 5076063
    Abstract: For use in processing an object refrigerant produced from an original refrigerant, a refrigerant processing system comprises a separating unit (18, 20, and 22) for separating the original refrigerant into a gaseous phase refrigerant component and a liquid phase refrigerant component. A first supplying pipe (12a) supplies the gaseous phase refrigerant component as the object refrigerant to a liquefying unit (24a and 24b), which liquefies the object refrigerant into a liquefied object refrigerant by the use of evaporation of a liquid refrigerant. A second supplying pipe (12b) supplies the liquid phase refrigerant component to the liquefying unit as the liquid refrigerant. The separating unit comprises a receiving unit (18) for receiving the original refrigerant as a received refrigerant, a condensing unit (20) for condensing the received refrigerant into a condensed refrigerant, and a separation vessel (22) comprising upper and bottom parts defining upper and bottom spaces, respectively.
    Type: Grant
    Filed: December 21, 1989
    Date of Patent: December 31, 1991
    Assignee: Sanden Corporation
    Inventors: Masao Kamegasawa, Keiichi Tomaru