Patents by Inventor Hiroyuki Maruoka

Hiroyuki Maruoka 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: 6460232
    Abstract: A buckle is formed of a female buckle in a hollow shape, and a male buckle including an insertion section to be inserted into the female buckle. The insertion section includes a middle leg, and elastic legs with engaging projections disposed at both sides of the middle leg. The female buckle includes engaging windows engaging the engaging projections of the elastic legs. The elastic legs are elastically deformed inwardly upon insertion operation of the insertion section, and at a predetermined position, the engaging projections enter into the engaging windows elastically. Also, the female buckle includes a pair of dividing plate portions for guiding and holding the middle leg therebetween, and the dividing plate portions extend between inner walls of the female buckle which face each other.
    Type: Grant
    Filed: January 30, 2001
    Date of Patent: October 8, 2002
    Assignee: Nifco Inc.
    Inventor: Hiroyuki Maruoka
  • Publication number: 20010013159
    Abstract: A buckle is formed of a female buckle in a hollow shape, and a male buckle including an insertion section to be inserted into the female buckle. The insertion section includes a middle leg, and elastic legs with engaging projections disposed at both sides of the middle leg. The female buckle includes engaging windows engaging the engaging projections of the elastic legs. The elastic legs are elastically deformed inwardly upon insertion operation of the insertion section, and at a predetermined position, the engaging projections enter into the engaging windows elastically. Also, the female buckle includes a pair of dividing plate portions for guiding and holding the middle leg therebetween, and the dividing plate portions extend between inner walls of the female buckle which face each other.
    Type: Application
    Filed: January 30, 2001
    Publication date: August 16, 2001
    Applicant: Nifco Inc.
    Inventor: Hiroyuki Maruoka
  • Patent number: 5893478
    Abstract: A container for small articles is formed of a housing having a an opening at an upper face thereof, a cover movably attached to the housing, and a locking device. The cover moves between a closing position for closing the opening, and an opening position for opening the opening of the housing. The cover is located at one side of the housing in the opening position. The locking device includes a catcher having a latching portion therein and attached to the cover, and a striker attached to housing. When the cover is disposed to the closing position, the striker engages the latching portion to lock the cover at the closing position, and when the cover in the closing position is pushed, the striker engaged with the latching portion is released from the latching portion, so that the cover is moved to the opening position.
    Type: Grant
    Filed: May 21, 1996
    Date of Patent: April 13, 1999
    Assignee: Nifco Inc.
    Inventor: Hiroyuki Maruoka
  • Patent number: 5695236
    Abstract: A glass plate holding device is used for holding a glass plate or a window glass to an opening of, for example, an automobile when the glass plate is fixed to the opening. The holding device is formed of a base plate to be attached to the glass plate, a leg fixed to the base plate at a base end and projecting in a direction away from the base plate, and a pawl formed at a forward end of the leg. The pawl enters into a mounting hole provided in a flange for the opening and engages an edge of the mounting hole to prevent the glass plate from being lifted.
    Type: Grant
    Filed: March 26, 1996
    Date of Patent: December 9, 1997
    Assignee: Nifco Inc.
    Inventors: Yoshikazu Banno, Hiroyuki Maruoka
  • Patent number: 5546704
    Abstract: A glass holder which facilitates attachment of a door glass to a window regulator. The glass holder is assembled to an elevating member of the window regulator. The glass holder includes a first holding plate having a through hole, a second holding plate having a through hole and arranged to face the first holding plate so as to hold the door glass in cooperation with the first holding plate, a fastening member passed through a mounting hole formed in the door glass and the through holes formed in the first and second holding plates to fasten the door glass, and a hinge for pivotally connecting the second holding plate to the first holding plate to allow the second holding plate to form a holding space for holding the door glass.
    Type: Grant
    Filed: March 15, 1995
    Date of Patent: August 20, 1996
    Assignee: NIFCO Inc.
    Inventor: Hiroyuki Maruoka
  • Patent number: 5165324
    Abstract: A piston-cylinder type air damper includes a cylinder having an open end and a closed end, a piston having a head slidable along and in contact with the inner wall of the cylinder and a rod extending axially from the head and projecting outwardly from the open end of the cylinder, and a cap fitted upon the open end of the cylinder and permitting the rod to centrally penetrate therethrough. The cap is molded from a soft material into a C-shaped cylinder having a slit and two outwardly projecting claws formed upon the outer periphery thereof within the vicinity of the opposite ends thereof which define the slit therebetween. The cylinder has a hole formed within a side wall portion thereof at the open end thereof for engaging the two claws of the cap therein.
    Type: Grant
    Filed: October 16, 1991
    Date of Patent: November 24, 1992
    Assignee: Nifco Inc.
    Inventor: Hiroyuki Maruoka
  • Patent number: 4280467
    Abstract: Electrostatically charged liquid fuel is introduced into a venturi to be atomized therein and is then applied to the combustion chamber of an engine under the control of electrostatic force for properly controlling the air-fuel mixture ratio.
    Type: Grant
    Filed: July 26, 1979
    Date of Patent: July 28, 1981
    Assignee: Nissan Motor Company, Limited
    Inventor: Hiroyuki Maruoka
  • Patent number: 4220045
    Abstract: Mass flow measuring apparatus includes ionizing electrodes and an ion collecting electrode located downstream of the ionizing electrodes where the ionizing electrodes are biased with a high DC voltage produced in response to ignition pulses of an internal combustion engine. The high voltage is derived from a tap of the secondary winding of the ignition coil of the ignition circuit. The ions are allowed to migrate at the same speed with the mass fluid flow an are collected by the collecting electrode. The transit time of the ions over the distance between the ionizing electrodes and the collecting electrode is measured. The period of the high DC voltage applied across the ionizing electrodes may be controlled in accordance with the magnitude of the load of the engine and/or the transit time of the ions.
    Type: Grant
    Filed: November 27, 1978
    Date of Patent: September 2, 1980
    Assignee: Nissan Motor Company, Limited
    Inventors: Suzuo Suzuki, Hiroyuki Maruoka, Hatsuo Nagaishi, Yuji Matsubara
  • Patent number: 4212273
    Abstract: A concentration cell comprising an electrolyte with two surfaces respectively covered with two metallic electrodes is partially mantled by a layer of an oxidizing catalyst. Heating means is disposed in the catalyst for heating it when electrically energized.
    Type: Grant
    Filed: October 7, 1977
    Date of Patent: July 15, 1980
    Inventor: Hiroyuki Maruoka
  • Patent number: 4203398
    Abstract: Disclosed is an electrostatic apparatus for controlling the volume of liquid flow through a passage, without the use of mechanically moving parts comprising a pair of electrodes fixedly disposed in a liquid passage with a short distance therebetween in the direction of liquid flow therethrough, and an electric circuit to produce an electric field between the electrodes. The circuit includes a controller to vary the strength of the electric field and/or reverse the polarity. A flow-constricting orifice may be interposed between the electrodes. The liquid in the electric field tends to migrate toward one of the electrodes, so that the volume rate of the liquid flow in the passage can minutely be varied with good responsiveness to an external control signal.
    Type: Grant
    Filed: May 5, 1977
    Date of Patent: May 20, 1980
    Assignee: Nissan Motor Company, Limited
    Inventor: Hiroyuki Maruoka
  • Patent number: 4186601
    Abstract: Mass flow measuring apparatus includes an ionizing electrode and an ion collecting electrode located downstream from the ionizing electrode. The ions are allowed to migrate at the same speed with the mass fluid flow and are collected by the collecting electrode. The transit time of the ions over the distance between a predetermined point of the path of fluid and the collecting electrode is measured.
    Type: Grant
    Filed: November 1, 1978
    Date of Patent: February 5, 1980
    Assignee: Nissan Motor Company, Limited
    Inventor: Hiroyuki Maruoka
  • Patent number: 4183337
    Abstract: Electrostatically charged liquid fuel is introduced into a venturi to be atomized therein and is then applied to the combustion chambers of an engine under the control of electrostatic force for properly controlling the air-fuel mixture ratio.
    Type: Grant
    Filed: April 5, 1977
    Date of Patent: January 15, 1980
    Assignee: Nissan Motor Company, Limited
    Inventor: Hiroyuki Maruoka
  • Patent number: 4173888
    Abstract: In mass flow rate measuring apparatus wherein the fluid is ionized at intervals at a predetermined point of the fluid passage, a voltage is sensed when the ionized flow mass is collected by an electrode located downstream from the ionization point. Electromagnetic radiation, generated in response to the generation of a strong electric field that ionizes the fluid, is prevented by means of a gate circuit from being sensed as a signal for triggering a time measuring device. The signal from the gate circuit is coupled to a voltage sensing circuit that detects a point near or at the peak value of successive voltage waveforms to signal the time measuring device as a point of ion collection.
    Type: Grant
    Filed: January 13, 1978
    Date of Patent: November 13, 1979
    Assignee: Nissan Motor Company, Limited
    Inventors: Suzuo Suzuki, Hiroyuki Maruoka, Setsuzo Tachibana, Yuji Matsubara, Hatsuo Nagaishi
  • Patent number: 4152935
    Abstract: An ion collecting electrode is located downstream of ionizing means, the ions migrating at the same speed as the mass flow and being collected by the collecting electrode. The transit time of the ions over the distance between a predetermined point of the path of fluid and the collecting electrode is measured. A grounded shielding electrode protects the ion collecting electrode from being attacked by the electro-magnetic wave inevitably generated by the ionizing means upon operation of the same.
    Type: Grant
    Filed: January 12, 1978
    Date of Patent: May 8, 1979
    Assignee: Nissan Motor Company, Limited
    Inventors: Hatsuo Nagaishi, Hiroyuki Maruoka
  • Patent number: 4150644
    Abstract: An electrostatic fuel injector includes a plurality of threadlike tubes for ejecting charged fuel, an accelerator electrode for accelerating the fuel and a control electrode for modulating the amount of fuel ejected. A method for controlling the fuel injector includes applying a control bias to the control electrode with respect to the accelerator electrode in response to an engine operating parameter so as to modulate the amount of fuel in proportion to engine load. A plurality of such fuel injectors is stepwisely operated in response to the engine operating parameter to provide a wide range of variations in fuel quantity.
    Type: Grant
    Filed: May 27, 1977
    Date of Patent: April 24, 1979
    Assignee: Nissan Motor Company, Limited
    Inventors: Kenji Masaki, Hiroyuki Maruoka
  • Patent number: D447442
    Type: Grant
    Filed: August 10, 2000
    Date of Patent: September 4, 2001
    Assignee: Nifco Inc.
    Inventor: Hiroyuki Maruoka
  • Patent number: D455337
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: April 9, 2002
    Assignee: Nifco Inc.
    Inventor: Hiroyuki Maruoka
  • Patent number: D465408
    Type: Grant
    Filed: May 14, 2002
    Date of Patent: November 12, 2002
    Assignees: Nifco Inc., Nifco (HK) Ltd.
    Inventors: Chan Man, Hiroyuki Maruoka
  • Patent number: D467837
    Type: Grant
    Filed: July 23, 2002
    Date of Patent: December 31, 2002
    Assignee: Nifco Inc.
    Inventor: Hiroyuki Maruoka
  • Patent number: D387726
    Type: Grant
    Filed: September 12, 1995
    Date of Patent: December 16, 1997
    Assignee: Nifco Inc.
    Inventor: Hiroyuki Maruoka