Patents by Inventor Isamu Arano

Isamu Arano 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: 4793298
    Abstract: A ventilator for an ignition distributor used with an automobile comprises an air intake passage for sucking air from the outside of the distributor and an air exhaust passage for exhausting the air to the outside of the distributor. Each passage has one end opening in the upper surface of the bottom of the distributor, and the other end opening in the outer surface of the distributor. These openings of each passage are connected to each other through a passage bent at an obtuse angle or a passage having an intermediate bent passage portion formed in a circular arc shape.
    Type: Grant
    Filed: September 9, 1987
    Date of Patent: December 27, 1988
    Assignee: Hitachi, Ltd.
    Inventors: Isamu Arano, Takashi Kokubun
  • Patent number: 3973533
    Abstract: A device in which a contact base of a contact breaker is rotated about a cam shaft for effecting ignition timing adjustments for an internal combustion engine. The device comprises a negative pressure chamber defined between a first diaphragm connected to the contact base and a second diaphragm disposed in spaced juxtaposed relation with and having a larger pressure receiving area than the first diaphragm, the second diaphragm being provided with a spring which precludes diaplacement of the diaphragm till the force exerted on the diaphragm reaches a predetermined value.
    Type: Grant
    Filed: December 9, 1974
    Date of Patent: August 10, 1976
    Assignee: Hitachi, Ltd.
    Inventor: Isamu Arano