Patents by Inventor Masatoshi Okada
Masatoshi 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).
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Publication number: 20240117102Abstract: A polymer having a constituent unit derived from a monomer represented by the following formula (0), wherein the polymer has sites in which the constituent units are linked by direct bonding between aromatic rings of the monomer represented by the formula (0): wherein R is a monovalent group, and m is an integer of 1 to 5, wherein at least one R is a hydroxyl group, an alkoxy group having 1 to 40 carbon atoms and optionally having a substituent, or an amino group having 0 to 40 carbon atoms and optionally having a substituent.Type: ApplicationFiled: January 11, 2022Publication date: April 11, 2024Inventors: Kodai MATSUURA, Junya HORIUCHI, Yu OKADA, Tadashi OMATSU, Masatoshi ECHIGO
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Patent number: 8348639Abstract: A high performance sealing device having an excellent pressure resistance and realizing a prevention of damage. The sealing device usable at a working pressure of 0 to 2 MPa, and not damaged even if the pressure of high-pressure fuel of 5 MPa or higher is applied thereto, wherein high pressure fuel on the high pressure side is sealed by a first seal part, oil from a cam side on a low pressure side is sealed by a second seal part, and the fuel slightly leaked due to failure of scraping at the first seal part is sealed by the second seal part to form a dual seal structure. A resin ring coming into slidable sealing contact with a shaft is used in the first seal part, whereby abnormal abrasion does not occur even when fuel having less lubricity is used, and the durability of the seal is increased.Type: GrantFiled: March 28, 2007Date of Patent: January 8, 2013Assignee: NOK CorporationInventors: Masatoshi Okada, Iwao Taira, Tadashi Abiko, Yosuke Kondo, Kazuki Takeno, Ichiro Yamane
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Patent number: 7753376Abstract: There is provided a plunger seal (1) for a fuel injection pump for a direct-injection gasoline engine, in which, even if a resin material is used for a fuel seal member (12), the plunger seal can be made compact, sealing ability is increased, and assembling man-hours can be reduced, and in which set sealing performance can be achieved when a U-shaped elastic member (33) for applying an energizing force in a diametrical direction is used in a groove (41) formed in the fuel seal member (12). The resin fuel seal member (12) and an oil seal member (13) are assembled to form one seal system. Further, when the U-shaped elastic member (33) is installed in the groove (41), an axial position (L1) of an end surface (44a) at the side opposite to the sealed object of a fixing collar (44) formed on an inner peripheral surface of the groove (41) is positioned at the side (B) opposite to the sealed object than the axial position (L2) of a leading end portion (15b) of a seal lip (15) of the fuel seal member (12).Type: GrantFiled: February 20, 2009Date of Patent: July 13, 2010Assignee: Nok CorporationInventors: Yosuke Kondo, Yasuaki Tanabe, Katsutoshi Ishioka, Sosuke Ito, Shinji Nagasawa, Junichi Nakayama, Masatoshi Okada
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Patent number: 7717432Abstract: There is provided a plunger seal (1) for a fuel injection pump for a direct-injection gasoline engine, in which, even if a resin material is used for a fuel seal member (12), the plunger seal can be made compact, sealing ability is increased, and assembling man-hours can be reduced, and in which set sealing performance can be achieved when a U-shaped elastic member (33) for applying an energizing force in a diametrical direction is used in a groove (41) formed in the fuel seal member (12). The resin fuel seal member (12) and an oil seal member (13) are assembled to form one seal system. Further, when the U-shaped elastic member (33) is installed in the groove (41), an axial position (L1) of an end surface (44a) at the side opposite to the sealed object of a fixing collar (44) formed on an inner peripheral surface of the groove (41) is positioned at the side (B) opposite to the sealed object than the axial position (L2) of a leading end portion (15b) of a seal lip (15) of the fuel seal member (12).Type: GrantFiled: February 20, 2009Date of Patent: May 18, 2010Assignee: NOK CorporationInventors: Yosuke Kondo, Yasuaki Tanabe, Katsutoshi Ishioka, Sosuke Ito, Shinji Nagasawa, Junichi Nakayama, Masatoshi Okada
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Publication number: 20090166982Abstract: There is provided a plunger seal (1) for a fuel injection pump for a direct-injection gasoline engine, in which, even if a resin material is used for a fuel seal member (12), the plunger seal can be made compact, sealing ability is increased, and assembling man-hours can be reduced, and in which set sealing performance can be achieved when a U-shaped elastic member (33) for applying an energizing force in a diametrical direction is used in a groove (41) formed in the fuel seal member (12). The resin fuel seal member (12) and an oil seal member (13) are assembled to form one seal system. Further, when the U-shaped elastic member (33) is installed in the groove (41), an axial position (L1) of an end surface (44a) at the side opposite to the sealed object of a fixing collar (44) formed on an inner peripheral surface of the groove (41) is positioned at the side (B) opposite to the sealed object than the axial position (L2) of a leading end portion (15b) of a seal lip (15) of the fuel seal member (12).Type: ApplicationFiled: February 20, 2009Publication date: July 2, 2009Applicant: NOK CORPORATIONInventors: Yosuke Kondo, Yasuaki Tanabe, Katsutoshi Ishioka, Sosuke Ito, Shinji Nagasawa, Junichi Nakayama, Masatoshi Okada
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Publication number: 20090166981Abstract: There is provided a plunger seal (1) for a fuel injection pump for a direct-injection gasoline engine, in which, even if a resin material is used for a fuel seal member (12), the plunger seal can be made compact, sealing ability is increased, and assembling man-hours can be reduced, and in which set sealing performance can be achieved when a U-shaped elastic member (33) for applying an energizing force in a diametrical direction is used in a groove (41) formed in the fuel seal member (12). The resin fuel seal member (12) and an oil seal member (13) are assembled to form one seal system. Further, when the U-shaped elastic member (33) is installed in the groove (41), an axial position (L1) of an end surface (44a) at the side opposite to the sealed object of a fixing collar (44) formed on an inner peripheral surface of the groove (41) is positioned at the side (B) opposite to the sealed object than the axial position (L2) of a leading end portion (15b) of a seal lip (15) of the fuel seal member (12).Type: ApplicationFiled: February 20, 2009Publication date: July 2, 2009Applicant: NOK CORPORATIONInventors: Yosuke Kondo, Yasuaki Tanabe, Katsutoshi Ishioka, Sosuke Ito, Shinji Nagasawa, Junichi Nakayama, Masatoshi Okada
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Patent number: 7513506Abstract: There is provided a plunger seal (1) for a fuel injection pump for a direct-injection gasoline engine, in which, even if a resin material is used for a fuel seal member (12), the plunger seal can be made compact, sealing ability is increased, and assembling man-hours can be reduced, and in which set sealing performance can be achieved when a U-shaped elastic member (33) for applying an energizing force in a diametrical direction is used in a groove (41) formed in the fuel seal member (12). The resin fuel seal member (12) and an oil seal member (13) are assembled to form one seal system. Further, when the U-shaped elastic member (33) is installed in the groove (41), an axial position (L1) of an end surface (44a) at the side opposite to the sealed object of a fixing collar (44) formed on an inner peripheral surface of the groove (41) is positioned at the side (B) opposite to the sealed object than the axial position (L2) of a leading end portion (15b) of a seal lip (15) of the fuel seal member (12).Type: GrantFiled: March 22, 2005Date of Patent: April 7, 2009Assignee: Nok CorporationInventors: Yosuke Kondo, Yasuaki Tanabe, Katsutoshi Ishioka, Sosuke Ito, Shinji Nagasawa, Junichi Nakayama, Masatoshi Okada
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Publication number: 20080258405Abstract: A high performance sealing device having an excellent pressure resistance and realizing a prevention of damage. The sealing device usable at a working pressure of 0 to 2 MPa, and not damaged. even if the pressure of high-pressure fuel of 5 MPa or higher is applied thereto, wherein high pressure fuel on the high pressure side H is sealed by a first seal part 2, oil from a cam side on a low pressure side L is sealed by a second seal part 3, and the fuel slightly leaked due to failure of scraping at the first seal part is sealed by the second seal part to form a dual seal structure, and a resin ring 21 coming into slidable sealing contact with a shaft 10 is used in the first seal part 2, whereby abnormal abrasion does not occur even when fuel having less lubricity is used, and the durability of the seal is increased.Type: ApplicationFiled: April 1, 2008Publication date: October 23, 2008Inventors: Masatoshi Okada, Iwao Taira, Tadashi Abiko, Yosuke Kondo, Kazuki Takeno, Ichiro Yamane
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Publication number: 20070222157Abstract: There is provided a plunger seal (1) for a fuel injection pump for a direct-injection gasoline engine, in which, even if a resin material is used for a fuel seal member (12), the plunger seal can be made compact, sealing ability is increased, and assembling man-hours can be reduced, and in which set sealing performance can be achieved when a U-shaped elastic member (33) for applying an energizing force in a diametrical direction is used in a groove (41) formed in the fuel seal member (12). The resin fuel seal member (12) and an oil seal member (13) are assembled to form one seal system. Further, when the U-shaped elastic member (33) is installed in the groove (41), an axial position (L1) of an end surface (44a) at the side opposite to the sealed object of a fixing collar (44) formed on an inner peripheral surface of the groove (41) is positioned at the side (B) opposite to the sealed object than the axial position (L2) of a leading end portion (15b) of a seal lip (15) of the fuel seal member (12).Type: ApplicationFiled: March 22, 2005Publication date: September 27, 2007Inventors: Yosuke Kondo, Yasuaki Tanabe, Katsutoshi Ishioka, Sosuke Ito, Shinji Nagasawa, Junichi Nakayama, Masatoshi Okada
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Publication number: 20070182103Abstract: A high performance sealing device having an excellent pressure resistance and realizing a prevention of damage. The sealing device usable at a working pressure of 0 to 2 MPa, and not damaged even if the pressure of high-pressure fuel of 5 MPa or higher is applied thereto, wherein high pressure fuel on the high pressure side H is sealed by a first seal part 2, oil from a cam side on a low pressure side L is sealed by a second seal part 3, and the fuel slightly leaked due to failure of scraping at the first seal part is sealed by the second seal part to form a dual seal structure, and a resin ring 21 coming into slidable sealing contact with a shaft 10 is used in the first seal part 2, whereby abnormal abrasion does not occur even when fuel having less lubricity is used, and the durability of the seal is increased.Type: ApplicationFiled: March 28, 2007Publication date: August 9, 2007Inventors: Masatoshi Okada, Iwao Taira, Tadashi Abiko, Yosuke Kondo, Kazuki Takeno, Ichiro Yamane
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Publication number: 20070169621Abstract: A high performance sealing device having an excellent pressure resistance and realizing a prevention of damage. The sealing device usable at a working pressure of 0 to 2 MPa, and not damaged even if the pressure of high-pressure fuel of 5 MPa or higher is applied thereto, wherein high pressure fuel on the high pressure side H is sealed by a first seal part 2, oil from a cam side on a low pressure side L is sealed by a second seal part 3, and the fuel slightly leaked due to failure of scraping at the first seal part is sealed by the second seal part to form a dual seal structure, and a resin ring 21 coming into slidable sealing contact with a shaft 10 is used in the first seal part 2, whereby abnormal abrasion does not occur even when fuel having less lubricity is used, and the durability of the seal is increased.Type: ApplicationFiled: March 28, 2007Publication date: July 26, 2007Inventors: Masatoshi Okada, Iwao Taira, Tadashi Abiko, Yosuke Kondo, Kazuki Takeno, Ichiro Yamane
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Publication number: 20040164496Abstract: A high performance sealing device (1) having an excellent pressure resistance, usable at a working pressure of 0 to 2 MPa, and not damaged even if the pressure of high-pressure fuel of 5 MPa or higher is applied thereto, wherein high pressure fuel on the high pressure side (H) is sealed by a first seal part (2), oil from a cam side on a low pressure side (L) is sealed by a second seal part (3), and the fuel slightly leaked through the first seal part (2) is sealed by the second seal part (3) to form a double seal structure, and a resin ring (21) slidably and sealingly coming into contact with a shaft (10) is used in the first seal part (2), whereby abnormal wear does not occur even if fuel with poor lubrication is used, and the durability of the seal is increased.Type: ApplicationFiled: April 13, 2004Publication date: August 26, 2004Inventors: Masatoshi Okada, Iwao Taira, Tadashi Abiko, Yosuke Kondo, Kazuki Takeno, Ichiro Yamane
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Patent number: 5501058Abstract: A coil packing line in which coils are packed by a plurality of operation processes is provided. The coil packing line is provided with a plurality of work stations, stationary skid mechanisms, carriage mechanisms and a plurality of reciprocating mechanisms. Each operation process has a corresponding work station. The stationary skid mechanisms are provided at each work station for supporting a coil at the work station. The carriage mechanisms are provided between each work station for removing a coil from an upstream stationary skid mechanism, supporting the coil and depositing the coil at a downstream stationary skid mechanism. The plurality of reciprocating mechanisms independently move at least one carriage mechanism back and forth between the upstream and downstream stationary skid mechanisms.Type: GrantFiled: August 31, 1994Date of Patent: March 26, 1996Assignees: Kawasaki Steel Corporation, Tsubakimoto Chain Co.Inventors: Mitsuyoshi Sonoyama, Kentaro Suzaki, Masaki Aihara, Hirokatsu Suzuki, Shoji Miyahara, Norio Kojima, Masatoshi Okada
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Patent number: 5485531Abstract: A feature recognition method and apparatus is described where in one embodiment the digitized two-dimensional pattern or image usually of a character to be recognized is subjected first to conversion into a vector. The vector subsequently undergoes propagation and stopping operations subject to various tests so as to generate a list of unique features about the pattern being identified. Thusly, identified features are compared mathematically to a previously created feature library until a match is found. In an alternative embodiment, to increase the speed of three-dimensional, feature-extraction processing of character patterns the vector-extraction positions on a pattern are converted into flags and accommodated in a corresponding motion-flag memory.Type: GrantFiled: September 17, 1993Date of Patent: January 16, 1996Assignees: Fuji Electric Co., Ltd., Fuji Facom CorporationInventors: Hitoshi Ichinohe, Yasuo Hongo, Masatoshi Okada
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Patent number: 5131881Abstract: A toy is provided for lifting goods onto a stand-by portion and discharging them from the stand-by portion in response to the passing of an object. A goods lifting portion is pivotably supported by a vertical support member at a pivot point. A receiving portion is located at one end radially extending from the pivot point. An extension member is located at a second end radially extending from the pivot point for upwardly pivoting the receiving portion to empty the goods from the receiving portion onto the stand-by portion when the support member reaches a predetermined vertical distance. A contact member provides a force upon the passing of an object. A separating and discharging member rotatingly receives goods of a predetermined quantity from the stand-by portion and discharges the goods when the contact member provides the force. A retaining member disables the separating and discharging member when both positionally moved to a predetermined position and the absence of a magnetic force is detected.Type: GrantFiled: January 23, 1991Date of Patent: July 21, 1992Assignee: Tomy Company, Ltd.Inventor: Masatoshi Okada
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Patent number: 4784091Abstract: Each of the cylinder heads forming right and left cylinder banks of a V-type engine is provided, in the inner side wall thereof, with intake ports each communicating with a cylinder formed in the cylinder bank. A camshaft is provided in each cylinder bank above intake and exhaust valves to drive the valves in synchronization with the rotation of the engine and supported for rotation by a plurality of bearings. Each discrete intake passage is connected to one of the intake port of one of the cylinder banks and extends above the other cylinder bank. Cylinder head covers mounted on the respective cylinder heads are provided with recessed portions at the portions corresponding to the inter-bearing portions of the camshaft and said discrete intake passages extend through the recessed portions.Type: GrantFiled: April 7, 1987Date of Patent: November 15, 1988Assignee: Mazda Motor CorporationInventors: Masatoshi Okada, deceased, Masami Nishida, Kazuaki Hokazono
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Patent number: 4729348Abstract: A cylinder head structure for a V-type engine comprising a pair of cylinder head members which are the same in shape and oriented in opposite directions and which are provided in each of the front and rear end wall portions with an opening. Camshafts are supported for rotation in the respective cylinder head members so that their respective one ends project outside through the openings on the same end of the engine. A cam pulley is mounted on the projecting portion of each cam shaft, and a transmission belt is provided for transmitting the driving force of the crankshaft to the cam pulley on each camshaft. A pair of first cover members are mounted on the end wall portions of the respective cylinder head members through which the camshafts project to form closed cross section spaces together with the corresponding cylinder head members for covering the transmission belt.Type: GrantFiled: April 21, 1987Date of Patent: March 8, 1988Assignee: Mazda Motor CorporationInventors: Masatoshi Okada, Koji Asanomi, Masahiro Choshi, Ryoji Abe