Patents by Inventor Osami Usui

Osami Usui 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: 5183400
    Abstract: A closed type compressor has a casing, a compression mechanism section housed in the casing, an intake pipe member which extends through a burring hole in the casing and which is connected to an intake port of the compression mechanism section, an annular pipe insertion member airtightly bonded to a peripheral edge of the burring hole, and a tubular member fitted into an inner peripheral surface of the pipe insertion member and airtightly bonded to this inner peripheral surface by brazing. The intake pipe member extends through the tubular member to the intake port and is airtightly connected to the tubular member by welding. A plurality of grooves are formed in the outer peripheral surface of the tubular member or in the inner peripheral surface of the pipe insertion member over the entire circumference of the surface. The brazing material is received in the grooves.
    Type: Grant
    Filed: August 19, 1991
    Date of Patent: February 2, 1993
    Assignee: Hitachi, Ltd.
    Inventors: Takemi Tada, Hirosi Tanaka, Osami Usui