Patents by Inventor Minoru Katayama
Minoru Katayama 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: 20240149963Abstract: A wear resistant component includes a matrix portion made of metal, a core embedded in the matrix portion and having a hardness higher than that of the matrix portion, and a plurality of support members having at least one end exposed from a surface of the matrix portion, extending toward an interior of the matrix portion, and contacting the core at a portion other than the one end to define a position of the core within the matrix portion.Type: ApplicationFiled: February 25, 2022Publication date: May 9, 2024Applicant: KOMATSU LTD.Inventors: Masayuki OHISHI, Masaharu AMANO, Minoru KATAYAMA
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Patent number: 11618514Abstract: A link assembly includes a first member, a second member opposing the first member and being rotatable around a rotating shaft, a seal housing formed between the first and second members, and a seal assembly disposed inside the seal housing. The seal assembly has a seal ring and a load ring. The seal ring has a support ring and a lip ring. The seal ring is disposed between the first member and the load ring. The load ring is disposed between the seal ring and the second member. The lip ring abuts the load ring. The lip ring has a first lip part that abuts the first member and protrudes in an axial direction of the rotating shaft, and a second lip part that abuts the second member and protrudes in a radial direction perpendicular to the rotating shaft.Type: GrantFiled: November 30, 2017Date of Patent: April 4, 2023Assignee: KOMATSU LTD.Inventors: Minoru Katayama, Tomoyoshi Sho, Kenichi Hisamatsu
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Patent number: 11358662Abstract: With an idler, a first member includes a first boss portion, a first rim portion, and a side plate. A second member includes a second boss portion, a second rim portion, and a side plate. A third member includes a third boss portion having a third axle hole portion configured to allow insertion of an axle. The third boss portion is disposed between the first boss portion and the second boss portion. A first welded portion is formed between the second boss portion and the third boss portion and connects the second and third boss portions. A second welded portion is formed between the first boss portion and the third boss portion and connects the first and third boss portions. A third welded portion is formed between the first rim portion and the second rim portion and connects the first and second rim portions.Type: GrantFiled: January 11, 2019Date of Patent: June 14, 2022Assignee: KOMATSU LTD.Inventors: Tao Wang, Kenichi Hisamatsu, Minoru Katayama
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Patent number: 11175123Abstract: A control method of surface characteristic measuring apparatus relatively displaces by a relative displacement mechanism, detects when the distal end of the stylus contacting the measurable surface, calculates an amount of relative displacement in the Z-axis direction between the measuring device and the measured object required for a measuring arm to be leveled after the distal end of the stylus contacts the measurable surface, calculates a displacement amount generated in the distal end of the stylus in an X-axis direction when the measuring device and the measured object are relatively displaced only by in the Z-axis direction; and levels the measuring arm by relatively displacing only by the measuring device and the measured object in the Z-axis direction by the relative displacement mechanism, and relatively displaces only by the measuring device and the measured object in the X-axis direction by the relative displacement mechanism at the same time.Type: GrantFiled: June 12, 2019Date of Patent: November 16, 2021Assignee: MITUTOYO CORPORATIONInventors: Takayuki Ishioka, Minoru Katayama
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Publication number: 20210276639Abstract: A link assembly includes a first member, a second member opposing the first member and being rotatable around a rotating shaft, a seal housing formed between the first and second members, and a seal assembly disposed inside the seal housing. The seal assembly has a seal ring and a load ring. The seal ring has a support ring and a lip ring. The seal ring is disposed between the first member and the load ring. The load ring is disposed between the seal ring and the second member. The lip ring abuts the load ring. The lip ring has a first lip part that abuts the first member and protrudes in an axial direction of the rotating shaft, and a second lip part that abuts the second member and protrudes in a radial direction perpendicular to the rotating shaft.Type: ApplicationFiled: November 30, 2017Publication date: September 9, 2021Inventors: Minoru KATAYAMA, Tomoyoshi SHO, Kenichi HISAMATSU
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Patent number: 10668963Abstract: An idler wheel includes a disk shaped idler body, and a plurality of wear plate assemblies disposed to encircle a circumferential surface of the idler body. Each wear plate assembly includes a first wear plate and a second wear plate. The first and second wear plates are adjacent to each other. Each of the first and second wear plates includes a first crawler belt contact surface and a second crawler belt contact surface. Each of the first wear plates includes a first end part that defines an end on a second wear plate side of the first crawler belt contact surface as seen in a plan view, and a second end part that defines an end on the second wear plate side of the second crawler belt contact surface as seen in the plan view. The first end part is inclined with respect to an axial direction.Type: GrantFiled: April 16, 2014Date of Patent: June 2, 2020Assignee: KOMATSU LTD.Inventors: Naoaki Kita, Minoru Katayama, Kenichi Hisamatsu
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Publication number: 20200003542Abstract: A control method of surface characteristic measuring apparatus relatively displaces by a relative displacement mechanism, detects when the distal end of the stylus contacting the measurable surface, calculates an amount of relative displacement in the Z-axis direction between the measuring device and the measured object required for a measuring arm to be leveled after the distal end of the stylus contacts the measurable surface, calculates a displacement amount generated in the distal end of the stylus in an X-axis direction when the measuring device and the measured object are relatively displaced only by in the Z-axis direction; and levels the measuring arm by relatively displacing only by the measuring device and the measured object in the Z-axis direction by the relative displacement mechanism, and relatively displaces only by the measuring device and the measured object in the X-axis direction by the relative displacement mechanism at the same time.Type: ApplicationFiled: June 12, 2019Publication date: January 2, 2020Applicant: MITUTOYO CORPORATIONInventors: Takayuki ISHIOKA, Minoru KATAYAMA
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Publication number: 20190233031Abstract: With an idler, a first member includes a first boss portion, a first rim portion, and a side plate. A second member includes a second boss portion, a second rim portion, and a side plate. A third member includes a third boss portion having a third axle hole portion configured to allow insertion of an axle. The third boss portion is disposed between the first boss portion and the second boss portion. A first welded portion is formed between the second boss portion and the third boss portion and connects the second and third boss portions. A second welded portion is formed between the first boss portion and the third boss portion and connects the first and third boss portions . A third welded portion is formed between the first rim portion and the second rim portion and connects the first and second rim portions.Type: ApplicationFiled: January 11, 2019Publication date: August 1, 2019Inventors: Tao WANG, Kenichi HISAMATSU, Minoru KATAYAMA
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Patent number: 9902443Abstract: An idler wheel includes a disk shaped idler body, and a plurality of wear plate assemblies disposed to encircle a circumferential surface of the idler body. Each of the wear plate assemblies has an arc shaped wear plate disposed on the circumferential surface of the idler body, a first fixing member fixing the wear plate to the idler body, and a first fastening tool fastening the first fixing member to the idler body. Each wear plate has a crawler belt contact surface, a guide part protruding from the crawler belt contact surface to guide a crawler belt on the crawler belt contact surface, a first abutting surface abutting the idler body and being perpendicular to an axial direction, and a second abutting surface abutting the idler body and being perpendicular to the axial direction. The first abutting surface faces the second abutting surface in the axial direction.Type: GrantFiled: April 16, 2014Date of Patent: February 27, 2018Assignee: KOMATSU LTD.Inventors: Naoaki Kita, Minoru Katayama, Kenichi Hisamatsu
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Publication number: 20170120971Abstract: An idler wheel includes a disk shaped idler body, and a plurality of wear plate assemblies disposed to encircle a circumferential surface of the idler body. Each of the wear plate assemblies has an arc shaped wear plate disposed on the circumferential surface of the idler body, a first fixing member fixing the wear plate to the idler body, and a first fastening tool fastening the first fixing member to the idler body. Each wear plate has a crawler belt contact surface, a guide part protruding from the crawler belt contact surface to guide a crawler belt on the crawler belt contact surface, a first abutting surface abutting the idler body and being perpendicular to an axial direction, and a second abutting surface abutting the idler body and being perpendicular to the axial direction. The first abutting surface faces the second abutting surface in the axial direction.Type: ApplicationFiled: April 16, 2014Publication date: May 4, 2017Inventors: Naoaki KITA, Minoru KATAYAMA, Kenichi HISAMATSU
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Publication number: 20170066489Abstract: An idler wheel includes a disk shaped idler body, and a plurality of wear plate assemblies disposed to encircle a circumferential surface of the idler body. Each wear plate assembly includes a first wear plate and a second wear plate. The first and second wear plates are adjacent to each other. Each of the first and second wear plates includes a first crawler belt contact surface and a second crawler belt contact surface. Each of the first wear plates includes a first end part that defines an end on a second wear plate side of the first crawler belt contact surface as seen in a plan view, and a second end part that defines an end on the second wear plate side of the second crawler belt contact surface as seen in the plan view. The first end part is inclined with respect to an axial direction.Type: ApplicationFiled: April 16, 2014Publication date: March 9, 2017Inventors: Naoaki KITA, Minoru KATAYAMA, Kenichi HISAMATSU
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Patent number: 9091521Abstract: Surface texture measuring apparatus includes a measurement arm table storing mass of an entire measurement arm, an arm length from a supporting point to a stylus, and a horizontal and vertical barycenter of the measurement arm in a horizontal posture for each type of the measurement arm in which a second measurement arm having a different mass is attached; a measurement arm specifier; an inclination angle detector detecting an inclination angle of the detector; and a controller reading out from the measurement arm table the mass, the arm length, the horizontal barycenter, and the vertical barycenter for a specified measurement arm, calculating a difference between a measurement force of the measurement arm in the horizontal posture and a measurement force of the measurement arm in an inclined posture based on the read-out information and the inclination angle detected by the inclination angle detector, and adjusting a measurement force.Type: GrantFiled: October 22, 2012Date of Patent: July 28, 2015Assignee: MITUTOYO CORPORATIONInventors: Tatsuki Nakayama, Minoru Katayama
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Patent number: 8214104Abstract: In an abnormal noise inspection method for an anti-vibration device for vehicle use, it is determined whether, during travel of a vehicle in which a supported member is supported to the vehicle body by an anti-vibration device, abnormal noise occurs or not in the passenger compartment owing to the anti-vibration device.Type: GrantFiled: March 7, 2008Date of Patent: July 3, 2012Assignee: Kabushiki Kako Co., Ltd.Inventors: Katsutoshi Ohta, Minoru Katayama, Takashi Moriya, Yoshinori Fujinami, Tetsuya Miyake
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Patent number: 8025273Abstract: In a liquid-filled anti-vibration mounting device suitable such as for an engine mount, an accommodation room containing a rubber movable plate is formed inside a partition member partitioning a liquid chamber into a pressure receiving chamber and a balancing chamber. The partition member includes a pair of division walls, one adjoining the pressure receiving chamber and the other adjoining the balancing chamber. Each division wall is formed with a plurality of communication holes. The communication holes are arranged to undulate at least a portion of the movable plate towards the peripheral edge thereof at specified circumferential intervals or greater by the action of the liquid pressure through the communication holes. The movable plate thus deformed, particularly its portion towards the peripheral edge, has a small area to come into contact with the division walls at a time, which effectively disperses and lessens a shock due to contact.Type: GrantFiled: November 14, 2007Date of Patent: September 27, 2011Assignee: Kurashiki Kako Co., Ltd.Inventors: Minoru Katayama, Katsutoshi Ohta, Sumio Uchida, Yoshiharu Yamamoto
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Patent number: 7802777Abstract: A liquid-filled vibration isolator has a first orifice channel providing communication between a pressure receiving chamber and a balancing chamber. One of the pressure receiving chamber and the balancing chamber is communicated via a second orifice channel with an intermediate liquid chamber. The second orifice channel has a shorter distance or a larger cross-sectional area than the first orifice channel. An elastic film member, such as a membrane, separates the intermediate liquid chamber and the other of the pressure receiving chamber and the balancing chamber from each other. A communicating hole of a predetermined size is formed in the elastic film member. An imaginary orifice channel combined from the two orifice channels provides a high damping effect on input vibration of relatively low frequency. As the vibration frequency increases, a gradual transition is made to the damping characteristic of the second orifice channel only.Type: GrantFiled: June 19, 2009Date of Patent: September 28, 2010Assignee: Kurashiki Kako Co., Ltd.Inventors: Minoru Katayama, Naoki Miyamoto
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Publication number: 20100213650Abstract: A liquid-filled vibration isolator has a first orifice channel providing communication between a pressure receiving chamber and a balancing chamber. One of the pressure receiving chamber and the balancing chamber is communicated via a second orifice channel with an intermediate liquid chamber. The second orifice channel has a shorter distance or a larger cross-sectional area than the first orifice channel. An elastic film member, such as a membrane, separates the intermediate liquid chamber and the other of the pressure receiving chamber and the balancing chamber from each other. A communicating hole of a predetermined size is formed in the elastic film member. An imaginary orifice channel combined from the two orifice channels provides a high damping effect on input vibration of relatively low frequency. As the vibration frequency increases, a gradual transition is made to the damping characteristic of the second orifice channel only.Type: ApplicationFiled: June 19, 2009Publication date: August 26, 2010Inventors: Minoru KATAYAMA, Naoki MIYAMOTO
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Publication number: 20080290573Abstract: In a liquid-filled anti-vibration mounting device suitable such as for an engine mount, an accommodation room containing a rubber movable plate is formed inside a partition member partitioning a liquid chamber into a pressure receiving chamber and a balancing chamber. The partition member includes a pair of division walls, one adjoining the pressure receiving chamber and the other adjoining the balancing chamber. Each division wall is formed with a plurality of communication holes. The communication holes are arranged to undulate at least a portion of the movable plate towards the peripheral edge thereof at specified circumferential intervals or greater by the action of the liquid pressure through the communication holes. The movable plate thus deformed, particularly its portion towards the peripheral edge, has a small area to come into contact with the division walls at a time, which effectively disperses and lessens a shock due to contact.Type: ApplicationFiled: November 14, 2007Publication date: November 27, 2008Applicant: KURASHIKI KAKO CO., LTD.Inventors: Minoru KATAYAMA, Katsutoshi OHTA, Sumio UCHIDA, Yoshiharu YAMAMOTO
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Publication number: 20080262672Abstract: In an abnormal noise inspection method for a anti-vibration device for vehicle use, it is determined whether, during travel of a vehicle in which a supported member is supported to the vehicle body by an anti-vibration device, abnormal noise occurs or not in the passenger compartment owing to the anti-vibration device.Type: ApplicationFiled: March 7, 2008Publication date: October 23, 2008Applicant: KURASHIKI KAKO CO., LTD.Inventors: Katsutoshi OHTA, Minoru KATAYAMA, Takashi MORIYA, Yoshinori FUJINAMI, Tetsuya MIYAKE
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Patent number: 7363181Abstract: A surface texture measuring instrument is provided that is capable of performing a correction operation depending on the rotation angle position of a detector even when the detector is rotated for measurement.Type: GrantFiled: February 23, 2006Date of Patent: April 22, 2008Assignee: Mitutoyo CorporationInventors: Minoru Katayama, Takafumi Kano
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Publication number: 20060191328Abstract: A surface texture measuring instrument is provided that is capable of performing a correction operation depending on the rotation angle position of a detector even when the detector is rotated for measurement.Type: ApplicationFiled: February 23, 2006Publication date: August 31, 2006Applicant: MITUTOYO CORPORATIONInventors: Minoru Katayama, Takafumi Kano