Patents by Inventor Masanori Kadokawa
Masanori Kadokawa 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: 9017193Abstract: A belt-type continuously variable transmission for a vehicle includes: a primary pulley including a first fixed sheave fixed to an input shaft, and a first movable sheave relatively non-rotatable and relatively movable in axial direction to the input shaft due to spline-fitting of a female spline formed on an inner circumferential portion thereof to a male spline formed on the input shaft; a secondary pulley including a second fixed sheave fixed to an output shaft in parallel with the input shaft, and a second movable sheave relatively non-rotatable and relatively movable in the axial direction to the output shaft due to spline-fitting of a female spline formed on an inner circumferential portion thereof to a male spline formed on the output shaft; and a transmission belt, the belt-type continuously variable transmission for a vehicle disposed with at least one of a first groove width defining portion disposed on the primary pulley for defining a maximum groove width of the first pulley groove and a second grType: GrantFiled: September 15, 2010Date of Patent: April 28, 2015Assignee: Toyota Jidosha Kabushiki KaishaInventor: Masanori Kadokawa
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Patent number: 8888617Abstract: With respect to a belt type continuously variable transmission in which a belt is wound around between a primary pulley and a secondary pulley, each of which includes a stationary sheave and a movable sheave, and a transmission is carried out by forwardly and backwardly moving the movable sheave with respect to the stationary sheave, a boss portion that protrudes in an axial direction is integrally formed with the stationary sheave of the secondary pulley, and a parking gear is provided on the outer circumferential side of the boss portion. Further, the configuration to hold the bearing is achieved using the inner circumferential portion of the boss portion integrally formed with the stationary sheave, that is, the inner circumferential portion of the parking gear so as to shorten the axial length of the secondary shaft, whereby achieving cost reduction.Type: GrantFiled: May 26, 2010Date of Patent: November 18, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventor: Masanori Kadokawa
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Publication number: 20140335981Abstract: A pulley mechanism of a vehicular belt-type continuously variable transmission that makes it possible to enhance the joint strength between a rotary shaft and a stationary sheave without increasing the axial length of the belt-type continuously variable transmission is provided. Since a first stationary portion and a second stationary portion are provided on both sides of a step portion respectively, a stationary sheave is fixed by this first stationary portion and this second stationary portion, and the joint strength between the stationary sheave and an output shaft increases. Besides, a belt reaction force during power transmission can be received by the first stationary portion and the second stationary portion.Type: ApplicationFiled: October 21, 2011Publication date: November 13, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masanori Kadokawa, Yasuhiro Kawai, Hirofumi Nakada
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Patent number: 8864610Abstract: A belt type continuously variable transmission for a vehicle includes: an input shaft and an output shaft disposed in parallel with each other; a pair of groove width variable pulleys disposed on the outer circumferential sides of the input shaft and the output shaft; and a transmission belt wound around each of V-grooves of the pair of the groove width variable pulleys, the belt type continuously variable transmission for a vehicle changing a winding diameter of the transmission belt by changing the groove widths of the V-grooves so as to continuously vary a gear ratio, wherein the groove width variable pulley includes a fixed sheave fixed to an outer circumferential surface of one of the input shaft and the output shaft, and a movable sheave disposed relatively non-rotatably on the one shaft and relatively movably in the direction of the shaft center of the one shaft so as to form the V-groove with the fixed sheave, wherein the belt type continuously variable transmission for a vehicle is disposed with a paType: GrantFiled: May 25, 2010Date of Patent: October 21, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventor: Masanori Kadokawa
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Publication number: 20130178316Abstract: A belt-type continuously variable transmission for a vehicle includes: a primary pulley including a first fixed sheave fixed to an input shaft, and a first movable sheave relatively non-rotatable and relatively movable in axial direction to the input shaft due to spline-fitting of a female spline formed on an inner circumferential portion thereof to a male spline formed on the input shaft; a secondary pulley including a second fixed sheave fixed to an output shaft in parallel with the input shaft, and a second movable sheave relatively non-rotatable and relatively movable in the axial direction to the output shaft due to spline-fitting of a female spline formed on an inner circumferential portion thereof to a male spline formed on the output shaft; and a transmission belt wound around a V-shaped first pulley groove formed between the first fixed sheave and the first movable sheave and a V-shaped second pulley groove formed between the second fixed sheave and the second movable sheave, the female spline formedType: ApplicationFiled: September 15, 2010Publication date: July 11, 2013Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Masanori Kadokawa
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Patent number: 8414433Abstract: A continuously variable transmission is provided with i) a primary pulley that is formed by a driving-side fixed sheave that is fixed to a drive shaft, a driving-side movable sheave, and a driving-side cylinder member, and has a driving-side cylinder, ii) a secondary pulley that is formed by a driven-side fixed sheave that is fixed to a driven shaft, a driven-side movable sheave, and a driven-side cylinder member, and has a driven-side cylinder, and iii) a drive belt. The drive shaft has a drive shaft internal fluid passage for supplying hydraulic fluid to the driving-side cylinder. A driving-side communicating fluid passage that communicates the drive shaft internal fluid passage with the driving-side cylinder is formed between the driving-side cylinder member and the driving-side movable sheave.Type: GrantFiled: November 12, 2009Date of Patent: April 9, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Masanori Kadokawa, Daisuke Kikukawa
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Publication number: 20130059684Abstract: With respect to a belt type continuously variable transmission in which a belt is wound around between a primary pulley and a secondary pulley, each of which includes a stationary sheave and a movable sheave, and a transmission is carried out by forwardly and backwardly moving the movable sheave with respect to the stationary sheave, a boss portion that protrudes in an axial direction is integrally formed with the stationary sheave of the secondary pulley, and a parking gear is provided on the outer circumferential side of the boss portion. Further, the configuration to hold the bearing is achieved using the inner circumferential portion of the boss portion integrally formed with the stationary sheave, that is, the inner circumferential portion of the parking gear so as to shorten the axial length of the secondary shaft, whereby achieving cost reduction.Type: ApplicationFiled: May 26, 2010Publication date: March 7, 2013Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Masanori Kadokawa
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Publication number: 20130040769Abstract: A belt type continuously variable transmission for a vehicle includes: an input shaft and an output shaft disposed in parallel with each other; a pair of groove width variable pulleys disposed on the outer circumferential sides of the input shaft and the output shaft; and a transmission belt wound around each of V-grooves of the pair of the groove width variable pulleys, the belt type continuously variable transmission for a vehicle changing a winding diameter of the transmission belt by changing the groove widths of the V-grooves so as to continuously vary a gear ratio, wherein the groove width variable pulley includes a fixed sheave fixed to an outer circumferential surface of one of the input shaft and the output shaft, and a movable sheave disposed relatively non-rotatably on the one shaft and relatively movably in the direction of the shaft center of the one shaft so as to form the V-groove with the fixed sheave, wherein the belt type continuously variable transmission for a vehicle is disposed with a paType: ApplicationFiled: May 25, 2010Publication date: February 14, 2013Inventor: Masanori Kadokawa
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Publication number: 20100120562Abstract: A continuously variable transmission is provided with i) a primary pulley that is formed by a driving-side fixed sheave that is fixed to a drive shaft, a driving-side movable sheave, and a driving-side cylinder member, and has a driving-side cylinder, ii) a secondary pulley that is formed by a driven-side fixed sheave that is fixed to a driven shaft, a driven-side movable sheave, and a driven-side cylinder member, and has a driven-side cylinder, and iii) a drive belt. The drive shaft has a drive shaft internal fluid passage for supplying hydraulic fluid to the driving-side cylinder. A driving-side communicating fluid passage that communicates the drive shaft internal fluid passage with the driving-side cylinder is formed between the driving-side cylinder member and the driving-side movable sheave.Type: ApplicationFiled: November 12, 2009Publication date: May 13, 2010Applicant: Toyota Jidosha Kabushiki KaishaInventors: Masanori Kadokawa, Daisuke Kikukawa