Patents by Inventor Kingo Okada
Kingo Okada 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: 9062640Abstract: A tubular rail body has an inlet for introducing a fuel therein from a fuel supply source. A plurality of tubular protrusion portions project from the rail body in a substantially vertical direction relative to an axial direction of the rail body, and are arranged at a predetermined interval in the axial direction. A tubular extension portion extends from each of the protrusion portions in a substantially vertical direction relative to both an axial direction of the protrusion portions and the axial direction of the rail body. The tubular extension portion is inserted into a bore which extends from an exterior of an internal combustion engine to a combustion chamber. A connecting portion is formed on an end portion of the extension portion opposite to the protrusion portion and is fluidly connected with a fuel injector inserted in the bore.Type: GrantFiled: September 12, 2012Date of Patent: June 23, 2015Assignee: DENSO CORPORATIONInventors: Shinsuke Yamamoto, Kingo Okada, Haruki Suzuki
-
Publication number: 20130074805Abstract: A tubular rail body his an inlet for introducing a fuel therein from a fuel supply source. A plurality of tubular protrusion portions project from the rail body in a substantially vertical direction relative to an axial direction of the rail body, and are arranged at a predetermined interval in the axial direction. A tubular extension portion extends from each of the protrusion portions in a substantially vertical direction relative to both an axial direction of the protrusion portions and the axial direction of the rail body. The tubular extension portion is inserted into a bore which extends from an exterior of an internal combustion engine to a combustion chamber. A connecting portion is formed on an end portion of the extension portion opposite to the protrusion portion and is fluidly connected with a fuel injector inserted in the bore.Type: ApplicationFiled: September 12, 2012Publication date: March 28, 2013Applicant: DENSO CORPORATIONInventors: Shinsuke YAMAMOTO, Kingo OKADA, Haruki SUZUKI
-
Patent number: 8230841Abstract: A fuel system comprises a fuel line that supplies fuel to an engine at a fuel line pressure. A first fuel pump selectively supplies fuel to the fuel line at a first pressure. A second fuel pump selectively supplies fuel to the fuel line at a second pressure that is greater than the first pressure. A check valve having an inlet in communication with an exit port of the first fuel pump and an outlet in communication with the fuel line is positioned based on the fuel line pressure and the first pressure.Type: GrantFiled: March 25, 2009Date of Patent: July 31, 2012Assignee: DENSO International America, Inc.Inventors: Kingo Okada, Dhyana Ramamurthy
-
Publication number: 20100242923Abstract: A fuel system comprises a fuel line that supplies fuel to an engine at a fuel line pressure. A first fuel pump selectively supplies fuel to the fuel line at a first pressure. A second fuel pump selectively supplies fuel to the fuel line at a second pressure that is greater than the first pressure. A check valve having an inlet in communication with an exit port of the first fuel pump and an outlet in communication with the fuel line is positioned based on the fuel line pressure and the first pressure.Type: ApplicationFiled: March 25, 2009Publication date: September 30, 2010Applicant: DENSO International America, Inc.Inventors: Kingo Okada, Dhyana Ramamurthy
-
Patent number: 7631634Abstract: A fuel pump module comprising a fuel pump, a pressure regulator, a supply line check valve, a relief valve, and a flange adapted to engage a fuel supply line that fluidly links the fuel pump module with an injector rail. The pressure regulator is adapted to maintain a predetermined fuel pressure between the fuel pump and the supply line check valve. The supply line check valve is adapted to facilitate a minimum fuel pressure in the fuel supply line. The relief valve is adapted to limit the maximum fuel pressure in the fuel supply line. The supply line check valve, the relief valve, and the flange are integrated to form a single fluidly interconnected structure disposed within a fluid path between the pressure regulator and the fuel supply line. An integrated casing may house the fuel pump and the pressure regulator.Type: GrantFiled: November 8, 2007Date of Patent: December 15, 2009Assignee: DENSO International America, Inc.Inventors: Dhyana Ramamurthy, Kingo Okada
-
Publication number: 20090120413Abstract: A fuel pump module comprising a fuel pump, a pressure regulator, a supply line check valve, a relief valve, and a flange adapted to engage a fuel supply line that fluidly links the fuel pump module with an injector rail. The pressure regulator is adapted to maintain a predetermined fuel pressure between the fuel pump and the supply line check valve. The supply line check valve is adapted to facilitate a minimum fuel pressure in the fuel supply line. The relief valve is adapted to limit the maximum fuel pressure in the fuel supply line. The supply line check valve, the relief valve, and the flange are integrated to form a single fluidly interconnected structure disposed within a fluid path between the pressure regulator and the fuel supply line. An integrated casing may house the fuel pump and the pressure regulator.Type: ApplicationFiled: November 8, 2007Publication date: May 14, 2009Inventors: Dhyana Ramamurthy, Kingo Okada
-
Patent number: 7383822Abstract: A fuel pump module has a fuel pump with an outlet located within a fuel reservoir, a fuel filter casing within which a fuel filter receives fuel from the fuel pump fuel outlet. A fuel discharge housing attaches to the fuel filter casing such that fuel passing from the filter and into the discharge casing then discharges from either a casing fuel outlet or a bleed orifice. The casing fuel outlet leads to the engine while the bleed orifice discharges fuel into a sump formed into the reservoir's bottom wall under the bleed orifice. The sump retains a quantity of fuel so that during low fuel levels within the reservoir, when the engine is off, the fuel filter maintains its prime condition from fuel in the sump to lessen the filter prime time during engine starting. Selective placement of fuel valves also decreases fuel system prime times.Type: GrantFiled: August 21, 2006Date of Patent: June 10, 2008Assignees: DENSO International America, Inc., DENSO CorporationInventors: Dhyana Ramamurthy, Kingo Okada, Hideto Takahashi
-
Publication number: 20080041345Abstract: A fuel pump module has a fuel pump with an outlet located within a fuel reservoir, a fuel filter casing within which a fuel filter receives fuel from the fuel pump fuel outlet. A fuel discharge housing attaches to the fuel filter casing such that fuel passing from the filter and into the discharge casing then discharges from either a casing fuel outlet or a bleed orifice. The casing fuel outlet leads to the engine while the bleed orifice discharges fuel into a sump formed into the reservoir's bottom wall under the bleed orifice. The sump retains a quantity of fuel so that during low fuel levels within the reservoir, when the engine is off, the fuel filter maintains its prime condition from fuel in the sump to lessen the filter prime time during engine starting. Selective placement of fuel valves also decreases fuel system prime times.Type: ApplicationFiled: August 21, 2006Publication date: February 21, 2008Inventors: Dhyana Ramamurthy, Kingo Okada, Hideto Takahashi
-
Patent number: 7159573Abstract: A fuel feed apparatus includes a grounded conductive resinous sub tank, a conductive fuel inlet pipe integrally formed with a bottom section of the sub tank and a conductive resinous jet nozzle included in a jet pump. The jet nozzle is welded on the bottom section of the sub tank, and has a nozzle port for jetting fuel. Here, the jet nozzle, the jet pump and the fuel inlet pipe are grounded via the sub tank without individual wiring member. Even if static electricity is generated due to friction between the jet nozzle and fuel jetted from the nozzle port, electrical charging can be prohibited. Thus, dielectric breakdown due to the electrically charging and cracking resulting from the dielectric breakdown can be also prohibited.Type: GrantFiled: October 6, 2003Date of Patent: January 9, 2007Assignee: Denso CorporationInventor: Kingo Okada
-
Patent number: 6883500Abstract: A fuel pump module with integrated vapor vent manifold for minimizing fuel vapor emission in a fuel venting system, comprising a modular flange having a plurality of vapor inlets on the bottom side for receiving fuel vapor from sources both proximal and distal to the flange within the fuel tank. The vapors collected from distal sources within the tank are carried to the manifold by means of internal vent lines thereby minimizing permeation emissions common of external vapor lines. Once received in the manifold, the vapors conglomerate and exit the top side of the flange through a single outlet, connected by a single vapor line to a remote canister for storage.Type: GrantFiled: July 9, 2003Date of Patent: April 26, 2005Assignees: Denso International America, Inc., Denso CorporationInventors: Patrick Powell, Kingo Okada
-
Publication number: 20050005916Abstract: A fuel pump module with integrated vapor vent manifold for minimizing fuel vapor emission in a fuel venting system, comprising a modular flange having a plurality of vapor inlets on the bottom side for receiving fuel vapor from sources both proximal and distal to the flange within the fuel tank. The vapors collected from distal sources within the tank are carried to the manifold by means of internal vent lines thereby minimizing permeation emissions common of external vapor lines. Once received in the manifold, the vapors conglomerate and exit the top side of the flange through a single outlet, connected by a single vapor line to a remote canister for storage.Type: ApplicationFiled: July 9, 2003Publication date: January 13, 2005Inventors: Patrick Powell, Kingo Okada
-
Publication number: 20040074995Abstract: A fuel feed apparatus includes a grounded conductive resinous sub tank, a conductive fuel inlet pipe integrally formed with a bottom section of the sub tank and a conductive resinous jet nozzle included in a jet pump. The jet nozzle is welded on the bottom section of the sub tank, and has a nozzle port for jetting fuel. Here, the jet nozzle, the jet pump and the fuel inlet pipe are grounded via the sub tank without individual wiring member. Even if static electricity is generated due to friction between the jet nozzle and fuel jetted from the nozzle port, electrical charging can be prohibited. Thus, dielectric breakdown due to the electrically charging and cracking resulting from the dielectric breakdown can be also prohibited.Type: ApplicationFiled: October 6, 2003Publication date: April 22, 2004Applicant: DENSO CORPORATIONInventor: Kingo Okada
-
Patent number: 6394074Abstract: A fuel pump suctions fuel from a fuel tank and discharges it into a pressure tank. Then, the fuel pump suctions the fuel from the pressure tank and pressurizes it. Then, the fuel pump discharges the pressurized fuel toward an engine side through a fuel discharge pipeline. A pressure control valve is opened to communicate an inside of the fuel tank and an inside of the pressure tank when a pressure in the pressure tank becomes equal to or greater than a predetermined pressure. A canister receives activated carbons for absorbing vapor fuel from the fuel tank. A pressurizing pump suctions the vapor fuel from the canister and pressurizes it. The pressurized vapor fuel is then discharged from the pressurizing pump into the pressure tank, so that the vapor fuel is dissolved into the fuel in the pressure tank.Type: GrantFiled: October 18, 2001Date of Patent: May 28, 2002Assignee: Denso CorporationInventors: Kingo Okada, Nobuhiko Koyama, Toshihiko Muramatsu, Susumu Kojima
-
Publication number: 20020046739Abstract: A fuel pump suctions fuel from a fuel tank and discharges it into a pressure tank. Then, the fuel pump suctions the fuel from the pressure tank and pressurizes it. Then, the fuel pump discharges the pressurized fuel toward an engine side through a fuel discharge pipeline. A pressure control valve is opened to communicate an inside of the fuel tank and an inside of the pressure tank when a pressure in the pressure tank becomes equal to or greater than a predetermined pressure. A canister receives activated carbons for absorbing vapor fuel from the fuel tank. A pressurizing pump suctions the vapor fuel from the canister and pressurizes it. The pressurized vapor fuel is then discharged from the pressurizing pump into the pressure tank, so that the vapor fuel is dissolved into the fuel in the pressure tank.Type: ApplicationFiled: October 18, 2001Publication date: April 25, 2002Inventors: Kingo Okada, Nobuhiko Koyama, Toshihiko Muramatsu, Susumu Kojima
-
Patent number: 6138524Abstract: A fuel level detecting device has a first locking mechanism including a locking member, clamping portions for clamping a mounting surface, and pawl arms which are on a body of the device. A slit and engagement portions are provided on the mounting face of the mounting member, which acts as a second locking mechanism. The thickness of the locking member is equal to or slightly larger than the width of the slit, and the gap between a clamping portion and a contact face is equal to or slightly smaller than the thickness of the mounting face. The body is mounted to the mounting member when the locking member is inserted into the slit. This ensures the fuel detecting device to be mounted without play and disconnection thereof even when vibration occurs.Type: GrantFiled: May 7, 1997Date of Patent: October 31, 2000Assignee: Denso CorporationInventors: Shinji Tsuda, Kingo Okada, Keiichi Yamashita, Yoshifumi Terada
-
Patent number: 6123521Abstract: A fuel supply system having a pump for drawing and discharging fuel from a tank and a filter for catching foreign matter in the fuel. A housing has a fuel outlet and supports the pump. The pump has a fuel intake port and a fuel discharge port. A fuel passage is located in the housing and connects the fuel outlet with the discharge port The filter is located in the fuel passage. The filter has a filter case and a filter element therein. The filter case is located in the housing spaced from the inner wall thereof.Type: GrantFiled: May 28, 1998Date of Patent: September 26, 2000Assignees: Toyota Jidosha Kabushiki Kaisha, AISAN Industry Co., Ltd., Denso CorporationInventors: Eiji Mori, Masahide Kobayashi, Takashi Nagai, Satomi Wada, Kouji Izutani, Keiichi Yamashita, Hideyuki Nakai, Kingo Okada, Kazuhiro Shinomiya
-
Patent number: 6004462Abstract: Resin having a susceptibility to electrostatic charge which is opposite in polarity to the susceptibility to electrostatic charge of a filter sheet or member forming a filter element is impregnated into the filter member. For example, when the filter member is composed of polyester of 50-70 weight percentage and glass fiber of 5-25 weight percentage as well as pulp of 15-35 weight percentage, resin composed of phenol resin of 5-20 weight percentage and melamine resin of 80-95 weight percentage is impregnated into the filter member so that the susceptibility to electrostatic charge of the filter member can be neutralized. Thus, static electricity generated by friction between the filter element and fuel flowing therethrough can be controlled.Type: GrantFiled: June 27, 1996Date of Patent: December 21, 1999Assignee: Nippondenso Co., Ltd.Inventors: Katsuhisa Yamada, Kingo Okada, Kouji Izutani, Kenji Okabe
-
Patent number: 5900148Abstract: A cover for covering an opening of a fuel tank holds a fuel pump, a fuel filter, a fuel level gauge and a pressure regulator inside the fuel tank. The fuel filter is contained inside a filter housing having a C-shaped cross-section. A filter element also has a C-shaped cross-section. This type of filter element is formed by bending flat stacked pre-assembled bodies into a C-shape. Other components such as the fuel level gauge, a fuel passage and the like are placed in an open part of the C-shaped cross-section and thus, the fuel filter and the other components are integrated in a high density.Type: GrantFiled: June 25, 1996Date of Patent: May 4, 1999Assignee: Nippondenso Co., Ltd.Inventors: Kouji Izutani, Kingo Okada, Takayuki Nakaya, Katsuhisa Yamada
-
Patent number: 5785032Abstract: A cover for a fuel tank opening is molded with insulating resin and a plurality of terminal pins is directly inserted thereinto. A lower housing portion, made of conductive resin and containing a fuel filter element, is weld-connected to the fuel tank side of the cover. A fuel pump is held under the cover. When electricity is supplied to the fuel pump via an electric connector, fuel is discharged from the fuel pump and this discharged fuel is filtered by a fuel filter. Static electricity generated in the fuel filter dissipates through the lower housing portion made of conductive resin. This construction enables suppression of electrostatic voltage generated in the fuel filter. Moreover, a plurality of connector terminals are directly inserted into the upper housing cover portion of the fuel filter housing at the time of molding, which can therefore supply electric power to the fuel pump with a simplified construction.Type: GrantFiled: August 8, 1996Date of Patent: July 28, 1998Assignee: Nippondenso Co., Ltd.Inventors: Keiichi Yamashita, Kouji Izutani, Kingo Okada, Hideto Takahashi
-
Patent number: 5782223Abstract: A fuel supply system is installed inside a fuel tank as part of a cover closing an opening of the fuel tank. The fuel filter is integrally fixed to the cover and a fuel pump is mounted via the fuel filter. The fuel filter is in the shape of a partial annulus disposed in a certain angular range. Such system parts as a pressure regulator, an electric connector, a fuel level gauge and a fuel pipe are contained in the remaining angular range of the fuel pump periphery where the fuel filter is not disposed.Type: GrantFiled: August 8, 1996Date of Patent: July 21, 1998Assignee: Nippondenso Co., Ltd.Inventors: Keiichi Yamashita, Kouji Izutani, Kingo Okada, Hideto Takahashi