Patents by Inventor Kunihiko Mishima
Kunihiko Mishima 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: 10451175Abstract: The problem to be solved by the present invention lies in making it possible to reduce costs and to reduce the size of an oil pump, without impeding the degree of freedom in chain layout. An oil jet 1 is constructed in order to supply lubricating oil to a tension-side span of a chain C while also causing a tensioning force to act on a slack-side span of the chain C. The oil jet arm 1 is provided with a pivoting-side part 2A, and a tip-end side part 2B which is provided in such a way as to be pivotable about the pivoting-side part 2A and is acted on by a pressing force from a piston 41 of a hydraulic tensioner 4, and an oil ejection hole 22a for ejecting to the outside oil supplied from an oil discharge hole 41a in the piston 41 is formed in the tip-end side part 2B. Oil ejected from the oil ejection hole 22a is supplied to a portion E on the meshing start side with a sprocket 100 on the tension-side span of the chain C.Type: GrantFiled: April 17, 2015Date of Patent: October 22, 2019Assignee: BorgWarnerInventor: Kunihiko Mishima
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Publication number: 20170037956Abstract: The problem to be solved by the present invention lies in making it possible to reduce costs and to reduce the size of an oil pump, without impeding the degree of freedom in chain layout. An oil jet 1 is constructed in order to supply lubricating oil to a tension-side span of a chain C while also causing a tensioning force to act on a slack-side span of the chain C. The oil jet arm 1 is provided with a pivoting-side part 2A, and a tip-end side part 2B which is provided in such a way as to be pivotable about the pivoting-side part 2A and is acted on by a pressing force from a piston 41 of a hydraulic tensioner 4, and an oil ejection hole 22a for ejecting to the outside oil supplied from an oil discharge hole 41a in the piston 41 is formed in the tip-end side part 2B. Oil ejected from the oil ejection hole 22a is supplied to a portion E on the meshing start side with a sprocket 100 on the tension-side span of the chain C.Type: ApplicationFiled: April 17, 2015Publication date: February 9, 2017Inventor: Kunihiko MISHIMA
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Patent number: 9022887Abstract: A clip-type mechanism for tensioning slack in a chain. A spring-biased piston is positioned in a bore in a housing. A ratchet rack is positioned on the piston, along with a clip member. A recess in the housing bore has an annular member with a hardened surface to reduce wear.Type: GrantFiled: July 15, 2009Date of Patent: May 5, 2015Assignee: Borg Warner Inc.Inventor: Kunihiko Mishima
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Patent number: 8562465Abstract: A clip-type tensioner member having a piston in a housing and a ratchet mechanism. A plurality of rack teeth are formed on the outer periphery of the pistons. A clip member elastically engages with the rack teeth and is positioned in a recess in the housing. The points of contact of the clip member on the housing are different in the retracted and engaged positions.Type: GrantFiled: July 13, 2009Date of Patent: October 22, 2013Assignee: BorgWarner Morse TEC Japan K.K.Inventor: Kunihiko Mishima
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Patent number: 8197369Abstract: The present invention is directed to varying the oil pressure in the chamber of a hydraulic tensioner at multi-stages and preventing an increase of the chain friction at various driving conditions. A hydraulic tensioner (1) includes a housing (2) that has a plunger bore (2a) to slidably receive the plunger (3) and a spool bore (2b) to slidably receive the spool (4). The housing (2) further has an inner relief aperture (22) to provide a connection between the plunger bore and the spool bore and outside relief apertures (23a, 23b) to provide a connection between the spool bore and the outside of the housing. The entire opening areas of the inside and outside relief apertures (22, 23a, 23b) provide a connection between the plunger bore and the outside of the housing through the spool bore (2b) and vary at least at two stages in accordance with the travel of the spool (4).Type: GrantFiled: January 22, 2007Date of Patent: June 12, 2012Assignee: BorgWarner Inc.Inventor: Kunihiko Mishima
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Publication number: 20110111899Abstract: A clip-type tensioner member having a piston in a housing and a ratchet mechanism. A plurality of rack teeth are formed on the outer periphery of the piston. A clip member elastically engages with the rack teeth and is positioned in a recess in the housing. The recess has an annular member with a hardened oblique face.Type: ApplicationFiled: July 15, 2009Publication date: May 12, 2011Applicant: BORGWARNER INC.Inventor: Kunihiko Mishima
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Publication number: 20110111898Abstract: A clip-type tensioner member having a piston in a housing and a ratchet mechanism. A plurality of rack teeth are formed on the outer periphery of the pistons. A clip member elastically engages with the rack teeth and is positioned in a recess in the housing. The points of contact of the clip member on the housing are different in the retracted and engaged positions.Type: ApplicationFiled: July 13, 2009Publication date: May 12, 2011Applicant: BorgWarner Inc.Inventor: Kunihiko Mishima
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Publication number: 20090170647Abstract: The present invention is directed to varying the oil pressure in the chamber of a hydraulic tensioner at multi-stages and to preventing an increase of the chain friction at various driving conditions. A hydraulic tensioner (1) includes a housing (2) that has a plunger bore (2a) to slidably receive the plunger (3) and a spool bore (2b) to slidably receive the spool (4). The housing (2) further has an inner relief aperture (22) to provide a connection between the plunger bore (2a) and the spool bore (2b) and outside relief apertures (23a, 23b) to provide a connection between the spool bore (2b) and the outside of the housing (2). The entire opening areas of the inside and outside relief apertures (22, 23a, 23b) that provide a connection between the plunger bore (2a) and the outside of the housing (2) through the spool bore (2b) are adapted to vary at least at two stages in accordance with the travel of the spool (4).Type: ApplicationFiled: January 22, 2007Publication date: July 2, 2009Applicant: BORGWARNER MORSE TEC JAPAN K.K.Inventor: Kunihiko Mishima
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Publication number: 20070004544Abstract: A blade-type tensioner 1 for imparting tension to a chain includes a blade shoe 2 with a chain sliding surface 20 that extends between the proximal end portion 21 and the distal end portion 22 of the blade shoe 2. The blade-type tensioner 1 further includes a blade spring 3 disposed opposite the chain sliding surface 20 of the blade shoe 2, and a bracket 5 that has a fixed pin 50 inserted into the pin aperture 21c of the proximal end portion 21 of the blade shoe 2 and that has a slide face 52 to slidably support the distal end portion 22 of the blade shoe 2. The proximal end portion 21 of the blade shoe 2 has a bulge portion 21d that bulges out toward the distal end portion 22 of the blade shoe 2.Type: ApplicationFiled: May 24, 2006Publication date: January 4, 2007Applicant: BORGWARNER MORSE TEC JAPAN K. K.Inventor: Kunihiko Mishima
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Patent number: 6680129Abstract: Chain parts and other steel articles are provided with hard, wear-resistant carbide coatings by tumbling them in a heated retort with a particulate mix which includes a source of vanadium and/or niobium. The steel substrate comprises a steel having at least 0.2% carbon, preferably 0.7-1.2%. Where the chromium content of the steel is 4-12%, preferably 4-8%, the chemical deposition process includes drawing a small amount of chromium from the steel substrate into the vanadium or niobium carbide coating, where it is distributed substantially homogeneously, helping to provide adhesion strength to the coating.Type: GrantFiled: October 28, 2002Date of Patent: January 20, 2004Assignee: BorgWarner Inc.Inventors: Yumin Wang, Yoshito Hanayama, Doug Fornell, Naosumi Tada, Kunihiko Mishima
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Patent number: 6607850Abstract: Chain parts and other steel articles are provided with hard, wear-resistant carbide coatings by tumbling them in a heated retort with a particulate mix which includes a source of vanadium and/or niobium. The steel substrate comprises a steel having at least 0.2% carbon, preferably 0.7-1.2%. Where the chromium content of the steel is 4-12%, preferably 4-8%, the chemical deposition process includes drawing a small amount of chromium from the steel substrate into the vanadium or niobium carbide coating, where it is distributed substantially homogeneously, helping to provide adhesion strength to the coating.Type: GrantFiled: October 28, 2002Date of Patent: August 19, 2003Assignee: BorgWarner, Inc.Inventors: Yumin Wang, Yoshito Hanayama, Doug Fornell, Naosumi Tada, Kunihiko Mishima
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Patent number: 6582765Abstract: Chain parts and other steel articles are provided with hard, wear-resistant carbide coatings by tumbling them in a heated retort with a particulate mix which includes a source of vanadium and/or niobium. The steel substrate comprises a steel having at least 0.2% carbon, preferably 0.7-1.2%. Where the chromium content of the steel is 4-12%, preferably 4-8%, the chemical deposition process includes drawing a small amount of chromium from the steel substrate into the vanadium or niobium carbide coating, where it is distributed substantially homogeneously, helping to provide adhesion strength to the coating.Type: GrantFiled: June 26, 2001Date of Patent: June 24, 2003Assignee: BorgWarner, Inc.Inventors: Yumin Wang, Yoshito Hanayama, Doug Fornell, Naosumi Tada, Kunihiko Mishima
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Publication number: 20030104255Abstract: Chain parts and other steel articles are provided with hard, wear-resistant carbide coatings by tumbling them in a heated retort with a particulate mix which includes a source of vanadium and/or niobium. The steel substrate comprises a steel having at least 0.2% carbon, preferably 0.7-1.2%. Where the chromium content of the steel is 4-12%, preferably 4-8%, the chemical deposition process includes drawing a small amount of chromium from the steel substrate into the vanadium or niobium carbide coating, where it is distributed substantially homogeneously, helping to provide adhesion strength to the coating.Type: ApplicationFiled: October 28, 2002Publication date: June 5, 2003Inventors: Yumin Wang, Yoshito Hanayama, Doug Fornell, Naosumi Tada, Kunihiko Mishima
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Publication number: 20030098093Abstract: Chain parts and other steel articles are provided with hard, wear-resistant carbide coatings by tumbling them in a heated retort with a particulate mix which includes a source of vanadium and/or niobium. The steel substrate comprises a steel having at least 0.2% carbon, preferably 0.7-1.2%. Where the chromium content of the steel is 4-12%, preferably 4-8%, the chemical deposition process includes drawing a small amount of chromium from the steel substrate into the vanadium or niobium carbide coating, where it is distributed substantially homogeneously, helping to provide adhesion strength to the coating.Type: ApplicationFiled: October 28, 2002Publication date: May 29, 2003Inventors: Yumin Wang, Yoshito Hanayama, Doug Fornell, Naosumi Tada, Kunihiko Mishima
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Publication number: 20020031687Abstract: Chain parts and other steel articles are provided with hard, wear-resistant carbide coatings by tumbling them in a heated retort with a particulate mix which includes a source of vanadium and/or niobium. The steel substrate comprises a steel having at least 0.2% carbon, preferably 0.7-1.2%. Where the chromium content of the steel is 4-12%, preferably 4-8%, the chemical deposition process includes drawing a small amount of chromium from the steel substrate into the vanadium or niobium carbide coating, where it is distributed substantially homogeneously, helping to provide adhesion strength to the coating.Type: ApplicationFiled: June 26, 2001Publication date: March 14, 2002Inventors: Yumin Wang, Yoshito Hanayama, Doug Fornell, Naosumi Tada, Kunihiko Mishima