Patents by Inventor Tomohiko Asakage
Tomohiko Asakage 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).
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Patent number: 8875829Abstract: Provided is a construction machine, wherein an upper slewing body comprises a slewing frame and first and second power units, and wherein the second power unit comprises a second engine, a second controller to control driving of the second engine, a second hydraulic oil tank, a second hydraulic pump configured to be driven by the second engine to thereby suck hydraulic oil from the second hydraulic oil tank and discharge the hydraulic oil toward a hydraulic actuator, a second fuel tank configured to store fuel, and a second support member supporting the second engine, the second hydraulic oil tank, the second hydraulic pump and the second fuel tank, and wherein the second support member is configured to be attachable and detachable with respect to the slewing frame independently of a first support member of the first power unit, and the second hydraulic pump is detachably connected to the hydraulic actuator.Type: GrantFiled: July 3, 2013Date of Patent: November 4, 2014Assignee: Kobelco Cranes Co., Ltd.Inventors: Tomohiko Asakage, Hironori Takenaka
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Publication number: 20140007566Abstract: Provided is a construction machine, wherein an upper slewing body comprises a slewing frame and first and second power units, and wherein the second power unit comprises a second engine, a second controller to control driving of the second engine, a second hydraulic oil tank, a second hydraulic pump configured to be driven by the second engine to thereby suck hydraulic oil from the second hydraulic oil tank and discharge the hydraulic oil toward a hydraulic actuator, a second fuel tank configured to store fuel, and a second support member supporting the second engine, the second hydraulic oil tank, the second hydraulic pump and the second fuel tank, and wherein the second support member is configured to be attachable and detachable with respect to the slewing frame independently of a first support member of the first power unit, and the second hydraulic pump is detachably connected to the hydraulic actuator.Type: ApplicationFiled: July 3, 2013Publication date: January 9, 2014Inventors: Tomohiko ASAKAGE, Hironori TAKENAKA
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Patent number: 8601799Abstract: Disclosed is a construction machine which comprises: a command changing regulation section; a loading device for imposing, on an engine, a load for raising an exhaust temperature of the engine up to a value at which particulate matter accumulated in a filter is burnt; and an instruction section for instructing the loading device to perform an operation for loading the engine. The instruction section prohibits the loading device from changing a loading level on the engine, during a period where a manipulation-state detection section detects a presence of a manipulation of a manipulation section. The command changing regulation section is set to a changing permission mode for permitting a value of a command which is to be assigned to an actuator control valve, to be changed according to changing a value of a command to be output from a manipulation device, during a period where the loading level is constant.Type: GrantFiled: March 7, 2012Date of Patent: December 10, 2013Assignee: Kobelco Cranes Co., Ltd.Inventors: Tomohiko Asakage, Takaharu Michida, Katsuki Yamagata, Kenji Onuki, Shintaro Sasai
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Publication number: 20120227388Abstract: Disclosed is a construction machine which comprises: a command changing regulation section; a loading device for imposing, on an engine, a load for raising an exhaust temperature of the engine up to a value at which particulate matter accumulated in a filter is burnt; and an instruction section for instructing the loading device to perform an operation for loading the engine. The instruction section prohibits the loading device from changing a loading level on the engine, during a period where a manipulation-state detection section detects a presence of a manipulation of a manipulation section. The command changing regulation section is set to a changing permission mode for permitting a value of a command which is to be assigned to an actuator control valve, to be changed according to changing a value of a command to be output from a manipulation device, during a period where the loading level is constant.Type: ApplicationFiled: March 7, 2012Publication date: September 13, 2012Applicant: KOBELCO CRANES CO., LTD.Inventors: Tomohiko Asakage, Takaharu Michida, Katsuki Yamagata, Kenji Onuki, Shintaro Sasai
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Patent number: 7726435Abstract: In a hydraulic excavator wherein a control valve unit having a plurality of control valves in a united form and an operation pattern switching valve for switching from one to another among combined patterns of operating valves and control valves are disposed side by side in front and rear positions respectively within a valve accommodating space formed between an upper frame base plate and a floor plate in an upper rotating body, the operation pattern switching valve is inclined forwardly downward in a state in which its upper surface side including an operating lever thereof faces an operation port being formed to the floor plate.Type: GrantFiled: June 18, 2007Date of Patent: June 1, 2010Assignee: Kobelco Construction Machinery Co., Ltd.Inventors: Takanobu Nakayoshi, Hirokazu Imashige, Tomohiko Asakage, Kazuyuki Takeda
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Patent number: 7708100Abstract: After a remote control valve has been brought into a non-working state, a stop signal is to be sent from an engine controller in a controller to a governor controller in an engine to stop the engine automatically, under the condition that an illuminating lamp is turned off, after a preset allowance time has passed and when a gate lever provided at a gateway for an operator is opened (the operator gets off the machine). Further, before the engine is stopped, the operator is to be notified of the coming engine stop, and when the engine is stopped, a power supply is to be cut off automatically.Type: GrantFiled: July 22, 2003Date of Patent: May 4, 2010Assignee: Kobelco Construction Machinery Co., Ltd.Inventors: Tomohiko Asakage, Norihiko Hayashi, Hideki Kinugawa
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Patent number: 7634961Abstract: A hydraulic circuit including a first throttle disposed upstream of pressure-reducing valves of a remote-control valve, which operates a control valve of hydraulic pilot type, so as to reduce primary pressures supplied from a pilot pump to the pressure-reducing valves. Bleed-off lines connect pilot lines to tanks. Second throttles are disposed on the bleed-off lines, respectively, so as to moderate rises in the pilot pressures supplied to pilot ports of the control valve. The hydraulic circuit prevents detrimental effects such as deterioration of operability while ensuring shock absorption during quick operation.Type: GrantFiled: September 21, 2005Date of Patent: December 22, 2009Assignee: Kobelco Construction Machinery Co., Ltd.Inventors: Tomohiko Asakage, Yutaka Toji, Masaaki Tachino, Kazuhiko Fujii
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Patent number: 7500535Abstract: A control device for a construction machine according to the present invention is configured so that in the construction machine provided with an automatic stop function which automatically stops an engine by an engine controller upon a predetermined automatic stop condition being met, and a hydraulic lock function which sets a hydraulic actuator locked in an inactive state by a hydraulic lock controller, there is provided a restart switch, where after an automatic stop of the engine, when the restart switch is operated, a restart command is transmitted to the engine controller via a route independently of that of an engine switch and independently of a hydraulic unlock condition, and the engine is restarted.Type: GrantFiled: January 28, 2004Date of Patent: March 10, 2009Assignee: Kobelco Construction Machinery Co., Ltd.Inventors: Yoshiki Kamon, Yoshiyasu Umezu, Tomohiko Asakage, Norihiko Hayashi
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Publication number: 20080005937Abstract: In a hydraulic excavator wherein a control valve unit having a plurality of control valves in a united form and an operation pattern switching valve for switching from one to another among combined patterns of operating valves and control valves are disposed side by side in front and rear positions respectively within a valve accommodating space formed between an upper frame base plate and a floor plate in an upper rotating body, the operation pattern switching valve is inclined forwardly downward in a state in which its upper surface side including an operating lever thereof faces an operation port being formed to the floor plate.Type: ApplicationFiled: June 18, 2007Publication date: January 10, 2008Applicant: KOBELCO CONSTRUCTION MACHINERY CO., LTD.Inventors: Takanobu NAKAYOSHI, Hirokazu Imashige, Tomohiko Asakage, Kazuyuki Takeda
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Publication number: 20070277883Abstract: A hydraulic circuit including a first throttle disposed upstream of pressure-reducing valves of a remote-control valve, which operates a control valve of hydraulic pilot type, so as to reduce primary pressures supplied from a pilot pump to the pressure-reducing valves. Bleed-off lines connect pilot lines to tanks. Second throttles are disposed on the bleed-off lines, respectively, so as to moderate rises in the pilot pressures supplied to pilot ports of the control valve. The hydraulic circuit prevents detrimental effects such as deterioration of operability while ensuring shock absorption during quick operation.Type: ApplicationFiled: September 21, 2005Publication date: December 6, 2007Applicant: KOBELCO CONSTRUCTION MACHINERY CO., LTD.Inventors: Tomohiko Asakage, Yutaka Toji, Masaaki Tachino, Kazuhiko Fujii
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Patent number: 7282145Abstract: The prevent invention provides an oil filter comprising a filter element housed in a casing, the filter element being formed of two or more cylindrical element pieces piled on top of another in the height direction and attachably and detachably connected through connecting members. Accordingly, the efficiency in each of manufacture, stock control and storage of the filter element can be improved, and the cost can be also reduced.Type: GrantFiled: January 26, 2006Date of Patent: October 16, 2007Assignee: Kobelco Construction Machinery Co., Ltd.Inventors: Tomohiko Asakage, Kazuhiko Fujii, Saburo Mori, Tomoshige Tanaka
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Patent number: 7159562Abstract: A engine control device for a construction machine of the present invention is configured so that the engine control device comprises a first switch for selecting effectiveness/ineffectiveness of an automatic deceleration control by a controller and a second switch for selecting effectiveness/ineffectiveness of an automatic stop control, and that when a predetermined automatic stop condition is met even if the ineffectiveness of the automatic deceleration control is selected by the controller, the automatic deceleration control which reduces an engine speed is caused to be operated for a fixed period prior to the automatic stop control.Type: GrantFiled: January 28, 2004Date of Patent: January 9, 2007Assignee: Kobelco Construction Machinery Co., Ltd.Inventor: Tomohiko Asakage
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Publication number: 20060266029Abstract: A working machine includes a hydraulic pump and a travel control valve for each of left and right traveling unit. A tank-side fluid channel of the travel control valve includes an actuator control valve for controlling another actuator. When both travel control valves are operated at the same time and when at least one actuator control valve is operated, a merge control valve is opened to merge hydraulic fluid ejected from the two hydraulic pumps. At the same time, a feed switching valve is opened so that a different hydraulic pump supplies hydraulic fluid to the actuator control valve.Type: ApplicationFiled: May 1, 2006Publication date: November 30, 2006Applicant: KOBELCO CONSTRUCTION MACHINERY CO., LTD.Inventors: Tomohiko Asakage, Yoshiyasu Umezu
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Publication number: 20060200292Abstract: A engine control device for a construction machine of the present invention is configured so that the engine control device comprises an engine, a hydraulic pump driven by the engine serving as a power source, a hydraulic actuator actuated by pressure oil discharged from the hydraulic pump, working state determining means for determining whether the construction machine is in a working state or a non-working state, and engine control means for automatically stopping the engine upon the working state determining means determining that the construction machine is in the non-working state, including stop history storing means for readably storing a stop history of the engine stopped by the engine control means.Type: ApplicationFiled: January 29, 2004Publication date: September 7, 2006Applicant: OBELCO CONSTRUCTION MACHINERY CO., LTD.Inventor: Tomohiko Asakage
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Patent number: 7098549Abstract: A power control device for a construction machine of the present invention is characterized by including an engine, an actuator adapted to be driven with power of the engine, an engine controller for stopping the engine automatically when it is not necessary to drive the actuator, and an air conditioner for conditioning the air in an interior of a cab of the construction machine, and in which when an air conditioner operation detecting unit detects that the air conditioner is in operation and even when an engine power necessity determining unit determines that the power of the engine is not necessary, automatic stop of the engine by the engine controller is prevented.Type: GrantFiled: December 12, 2003Date of Patent: August 29, 2006Assignee: Kobelco Construction Machinery Co., Ltd.Inventors: Tomohiko Asakage, Hideki Kinugawa
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Publication number: 20060179830Abstract: A control device for a construction machine according to the present invention is configured so that in the construction machine provided with an automatic stop function which automatically stops an engine by an engine controller upon a predetermined automatic stop condition being met, and a hydraulic lock function which sets a hydraulic actuator locked in an inactive state by a hydraulic lock controller, there is provided a restart switch, where after an automatic stop of the engine, when the restart switch is operated, a restart command is transmitted to the engine controller via a route independently of that of an engine switch and independently of a hydraulic unlock condition, and the engine is restarted.Type: ApplicationFiled: January 28, 2004Publication date: August 17, 2006Inventors: Yoshiki Kamon, Yoshiyasu Umezu, Tomohiko Asakage, Norihiko Hayashi
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Publication number: 20060144669Abstract: After a remote control valve has been brought into a non-working state, a stop signal is to be sent from an engine controller in a controller to a governor controller in an engine to stop the engine automatically, under the condition that an illuminating lamp is turned off, after a preset allowance time has passed and when a gate lever provided at a gateway for an operator is opened (the operator gets off the machine). Further, before the engine is stopped, the operator is to be notified of the coming engine stop, and when the engine is stopped, a power supply is to be cut off automatically.Type: ApplicationFiled: July 22, 2003Publication date: July 6, 2006Applicant: KOBELCO CONSTRUCTION MACHINERY CO.,LTDInventors: Tomohiko Asakage, Norihiko Hayashi, Hideki Kinugawa
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Publication number: 20060124533Abstract: The prevent invention provides an oil filter comprising a filter element housed in a casing, the filter element being formed of two or more cylindrical element pieces piled on top of another in the height direction and attachably and detachably connected through connecting members. Accordingly, the efficiency in each of manufacture, stock control and storage of the filter element can be improved, and the cost can be also reduced.Type: ApplicationFiled: January 26, 2006Publication date: June 15, 2006Applicant: KOBELCO CONSTRUCTION MACHINERY CO., LTD.,Inventors: Tomohiko Asakage, Kazuhiko Fujii, Saburo Mori, Tomoshige Tanaka
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Publication number: 20060118084Abstract: A engine control device for a construction machine of the present invention is configured so that the engine control device comprises a first switch for selecting effectiveness/ineffectiveness of an automatic deceleration control by a controller and a second switch for selecting effectiveness/ineffectiveness of an automatic stop control, and that when a predetermined automatic stop condition is met even if the ineffectiveness of the automatic deceleration control is selected by the controller, the automatic deceleration control which reduces an engine speed is caused to be operated for a fixed period prior to the automatic stop control.Type: ApplicationFiled: January 28, 2004Publication date: June 8, 2006Applicant: Kobelco Construction Machinery Co., Ltd.Inventor: Tomohiko Asakage
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Publication number: 20060061106Abstract: A power control device for a construction machine of the present invention is characterized by including an engine, an actuator adapted to be driven with power of the engine, an engine controller for stopping the engine automatically when it is not necessary to drive the actuator, and an air conditioner for conditioning the air in an interior of a cab of the construction machine, and in which when an air conditioner operation detecting unit detects that the air conditioner is in operation and even when an engine power necessity determining unit determines that the power of the engine is not necessary, automatic stop of the engine by the engine controller is prevented.Type: ApplicationFiled: December 12, 2003Publication date: March 23, 2006Applicant: Kobelco Construction Machinery Co., Ltd.Inventors: Tomohiko Asakage, Hideki Kinugawa