Patents by Inventor Naoyuki Miwa
Naoyuki Miwa 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: 9933053Abstract: A belt-type continuously variable transmission capable of continuously changing a speed reduction ratio of a driven pulley to a drive pulley, has a speed reduction ratio regulation mechanism that regulates a minimum speed reduction ratio of the driven pulley to the drive pulley. The driven pulley includes a fixed sheave, a movable sheave displaceable in an axial direction with respect to the fixed sheave, and a coil spring that urges the movable sheave toward the fixed sheave. The speed reduction ratio regulation mechanism has a swing arm that adjusts an allowable range in which moving away in an axial direction of the movable sheave with respect to the fixed sheave is possible, and a regulation drive section that drives the swing distal end portion of the swing arm to swing continuously.Type: GrantFiled: October 6, 2016Date of Patent: April 3, 2018Assignees: HONDA MOTOR CO., LTD, KABUSHIKI KAISHA F.C.C.Inventors: Hajime Yoshimura, Yuji Matsuo, Tomoaki Ishikawa, Makoto Kataoka, Shigeki Kawashima, Norihiko Yokoyama, Naoyuki Miwa
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Publication number: 20170114875Abstract: A belt-type continuously variable transmission capable of continuously changing a speed reduction ratio of a driven pulley to a drive pulley, has a speed reduction ratio regulation mechanism that regulates a minimum speed reduction ratio of the driven pulley to the drive pulley. The driven pulley includes a fixed sheave, a movable sheave displaceable in an axial direction with respect to the fixed sheave, and a coil spring that urges the movable sheave toward the fixed sheave. The speed reduction ratio regulation mechanism has a swing arm that adjusts an allowable range in which moving away in an axial direction of the movable sheave with respect to the fixed sheave is possible, and a regulation drive section that drives the swing distal end portion of the swing arm to swing continuously.Type: ApplicationFiled: October 6, 2016Publication date: April 27, 2017Inventors: Hajime Yoshimura, Yuji Matsuo, Tomoaki Ishikawa, Makoto Kataoka, Shigeki Kawashima, Norihiko Yokoyama, Naoyuki Miwa
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Patent number: 9611904Abstract: A centrifugal clutch apparatus can include a driving-side rotational member rotatable around a shaft member connected to a driving device; clutch devices mounted on the driving-side rotational member and movable radially-outward of the driving-side rotational member. A driven-side rotational member rotatable independent from the driving-side rotational member can be arranged for covering the driving-side rotational member and can have an inner circumferential surface to engage with the clutch devices. Friction members can be adapted to be abutted against the inner circumferential surface so as to transmit the driving power of the driving device to the driven-side rotational member. The inner circumferential surface of the driven-side rotational member can be formed with a groove and a tensioning member formed as a ring-shaped member can be snap-fitted into the groove and held therein under a radially-outward biasing force.Type: GrantFiled: July 27, 2012Date of Patent: April 4, 2017Assignee: Kabushiki Kaisha F.C.C.Inventors: Makoto Kataoka, Masahiro Yamagishi, Naoyuki Miwa, Masataka Murai, Kaoru Aono
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Patent number: 8627938Abstract: A power transmitting apparatus can include a clutch housing, a plurality of driving and driven clutch plates, a clutch member, a pressure member, an intermediate member, a plurality of urging devices, and a back-torque limiting cam. The power transmitting apparatus can further include an urging force cut-off device for cutting-off the urging force applied to the pressure member from particular urging devices of the plurality of urging devices by separating the inner ends of the particular urging devices from the pressure member when the intermediate member is moved toward the pressure member by the action of the back-torque limiting cam.Type: GrantFiled: July 27, 2012Date of Patent: January 14, 2014Assignee: Kabushiki Kaisha F.C.C.Inventors: Makoto Kataoka, Naoyuki Miwa, Satoru Kashiwagi
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Publication number: 20130025997Abstract: A power transmitting apparatus can include a clutch housing, a plurality of driving and driven clutch plates, a clutch member, a pressure member, an intermediate member, a plurality of urging devices, and a back-torque limiting cam. The power transmitting apparatus can further include an urging force cut-off device for cutting-off the urging force applied to the pressure member from particular urging devices of the plurality of urging devices by separating the inner ends of the particular urging devices from the pressure member when the intermediate member is moved toward the pressure member by the action of the back-torque limiting cam.Type: ApplicationFiled: July 27, 2012Publication date: January 31, 2013Applicant: KABUSHIKI KAISHA F.C.CInventors: Makoto KATAOKA, Naoyuki MIWA, Satoru KASHIWAGI
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Publication number: 20130020170Abstract: A centrifugal clutch apparatus can include a driving-side rotational member rotatable around a shaft member connected to a driving device; clutch devices mounted on the driving-side rotational member and movable radially-outward of the driving-side rotational member. A driven-side rotational member rotatable independent from the driving-side rotational member can be arranged for covering the driving-side rotational member and can have an inner circumferential surface to engage with the clutch devices. Friction members can be adapted to be abutted against the inner circumferential surface so as to transmit the driving power of the driving device to the driven-side rotational member. The inner circumferential surface of the driven-side rotational member can be formed with a groove and a tension member formed as a ring-shaped member can be snap-fitted into the groove and held therein under a radially-outward biasing force.Type: ApplicationFiled: July 27, 2012Publication date: January 24, 2013Applicant: KABUSHIKI KAISHA F.C.CInventors: Makoto KATAOKA, Masahiro YAMAGISHI, Naoyuki MIWA, Masataka MURAI, Kaoru AONO
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Patent number: 8057347Abstract: A power transmitting apparatus can be configured to switch between 2-wheel drive mode and 4-wheel drive mode and to lock and unlock a differential device. The power transmitting apparatus can comprise an input shaft connected to a driving power source i.e.Type: GrantFiled: April 24, 2008Date of Patent: November 15, 2011Assignee: Kabushiki Kaisha F.C.C.Inventors: Ryouhei Chiba, Naoyuki Miwa
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Patent number: 7951038Abstract: A power transmitting apparatus for performing switching between 2-wheel and 4-wheel drive modes and locking and unlocking of a differential by an operational shaft can comprise a reversible motor, a driving shaft rotationally driven by the motor and adapted to be engaged by the operational shaft for transmitting a rotational force therebetween, a sub case for containing the motor and the driving shaft therein and mounted on the main case, an opening formed in the sub case and having a size permitting the operational shaft to be inserted and an end face of the driving shaft for engaging an end face of the operational shaft to be exposed, and a first sealing arranged on the inner circumferential surface of the opening at a position away from the driving shaft for sealing off the inside of the sub case with forming a seal between the inner circumferential surface of the opening and the outer circumferential surface of the operational shaft when the operational shaft is engaged with the driving shaft.Type: GrantFiled: May 12, 2008Date of Patent: May 31, 2011Assignee: Kabushiki Kaisha F.C.C.Inventors: Hideaki Ina, Naoyuki Miwa, Takayuki Suzuki
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Patent number: 7758463Abstract: A power transmitting apparatus for performing switching between 2-wheel and 4-wheel drive modes and locking and unlocking of differential mechanism by an operational shaft can include a driving device comprising a reversible motor, a rotational member rotationally driven by the motor and provided with a contacting member. A spring can be arranged on the rotational member, a connecting member can be arranged to be abutted by one end of the spring so as to be rotated by the rotational member via the coil spring, and a driving shaft can be rotatably arranged relative to the rotational member and engaged by the operational shaft in its rotational direction and adapted to be rotated by the rotational member via the connecting member. A stay can be engaged by the driving shaft in its rotational direction and provided with a contacting member.Type: GrantFiled: May 12, 2008Date of Patent: July 20, 2010Assignee: Kabushiki Kaisha F.C.C.Inventors: Ryouhei Chiba, Naoyuki Miwa
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Publication number: 20080280728Abstract: A power transmitting apparatus for performing switching between 2-wheel and 4-wheel drive modes and locking and unlocking of differential mechanism by an operational shaft can include a driving device comprising a reversible motor, a rotational member rotationally driven by the motor and provided with a contacting member. A spring can be arranged on the rotational member, a connecting member can be arranged to be abutted by one end of the spring so as to be rotated by the rotational member via the coil spring, and a driving shaft can be rotatably arranged relative to the rotational member and engaged by the operational shaft in its rotational direction and adapted to be rotated by the rotational member via the connecting member. A stay can be engaged by the driving shaft in its rotational direction and provided with a contacting member.Type: ApplicationFiled: May 12, 2008Publication date: November 13, 2008Applicant: KABUSHIKI KAISHA F.C.C.Inventors: Ryouhei Chiba, Naoyuki Miwa
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Publication number: 20080280720Abstract: A power transmitting apparatus for performing switching between 2-wheel and 4-wheel drive modes and locking and unlocking of a differential by an operational shaft can comprise a reversible motor, a driving shaft rotationally driven by the motor and adapted to be engaged by the operational shaft for transmitting a rotational force therebetween, a sub case for containing the motor and the driving shaft therein and mounted on the main case, an opening formed in the sub case and having a size permitting the operational shaft to be inserted and an end face of the driving shaft for engaging an end face of the operational shaft to be exposed, and a first sealing means arranged on the inner circumferential surface of the opening at a position away from the driving shaft for sealing off the inside of the sub case with forming a seal between the inner circumferential surface of the opening and the outer circumferential surface of the operational shaft when the operational shaft is engaged with the driving shaft.Type: ApplicationFiled: May 12, 2008Publication date: November 13, 2008Applicant: KABUSHIKI KAISHA F.C.C.Inventors: Hideaki Ina, Naoyuki Miwa, Takayuki Suzuki
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Publication number: 20080269002Abstract: A power transmitting apparatus can be configured to switch between 2-wheel drive mode and 4-wheel drive mode and to lock and unlock a differential device. The power transmitting apparatus can comprise an input shaft connected to a driving power source i.e.Type: ApplicationFiled: April 24, 2008Publication date: October 30, 2008Applicant: KABUSHIKI KAISHA F.C.C.Inventors: Ryouhei Chiba, Naoyuki Miwa
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Patent number: 7083031Abstract: A power transmission apparatus with a reaction force converted by a boosting mechanism used as a fastening force for an electromagnetic clutch has a solenoid (4); an electromagnetic clutch including a rotor (5) for transmitting the magnetic flux of the solenoid (4); an armature (8) attracted onto the rotor (5) by the magnetic flux, and a return spring (13) urging the armature (8) in a direction away from the rotor (5) to create a clearance âtâ therebetween. A boosting mechanism converts a torque of the input member (housing) (2) to an axial thrusting force when the armature of the electromagnetic clutch is attracted onto the rotor. A main clutch connects the input member (2) and the output member (shaft) (3) via the thrusting force generated by the boosting mechanism. This transmits the torque of the input member (2) to the output member (3).Type: GrantFiled: July 28, 2004Date of Patent: August 1, 2006Assignee: Kabushiki Kaisha F.C.C.Inventors: Yoshimi Sakurai, Naoyuki Miwa, Akio Ooishi, Katsu Yoshimoto
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Publication number: 20050023099Abstract: A power transmission apparatus with a reaction force converted by a boosting mechanism used as a fastening force for an electromagnetic clutch has a solenoid (4); an electromagnetic clutch including a rotor (5) for transmitting the magnetic flux of the solenoid (4); an armature (8) attracted onto the rotor (5) by the magnetic flux, and a return spring (13) urging the armature (8) in a direction away from the rotor (5) to create a clearance âtâ therebetween. A boosting mechanism converts a torque of the input member (housing) (2) to an axial thrusting force when the armature of the electromagnetic clutch is attracted onto the rotor. A main clutch connects the input member (2) and the output member (shaft) (3) via the thrusting force generated by the boosting mechanism. This transmits the torque of the input member (2) to the output member (3).Type: ApplicationFiled: July 28, 2004Publication date: February 3, 2005Inventors: Yoshimi Sakurai, Naoyuki Miwa, Akio Ooishi, Katsu Yoshimoto