Patents by Inventor Katsu Yoshimoto
Katsu Yoshimoto 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).
-
Patent number: 11885382Abstract: During movement of a mass of a centrifugal clutch a radially inner position to a radially outer position and a resulting increase in torque transmitted from an input gear to an output shaft, a power transmission apparatus includes a first torque region where the apparatus restricts operation of a pressing assist cam and a second torque region where the apparatus allows operation of the pressing assist cam.Type: GrantFiled: December 7, 2022Date of Patent: January 30, 2024Assignee: KABUSHIKI KAISHA F.C.C.Inventors: Yoshihiko Ozawa, Han Hiong Chen, Katsu Yoshimoto
-
Patent number: 11852205Abstract: In a power transmission apparatus, a centrifugal clutch includes a holder, a press, a first spherical body that is partially protruded from a first opening and in contact with a rolling contact surface of the press so as to be rollable thereon, and a second spherical body that is partially protruded from a second opening and in contact with a rolling contact surface of the holder so as to be rollable thereon. A through hole has a tapered shape from the first opening to the second opening. Disconnection of the first spherical body is prevented by an outer peripheral edge of one of the first opening and the second opening that has a smaller diameter.Type: GrantFiled: September 14, 2020Date of Patent: December 26, 2023Assignee: KABUSHIKI KAISHA F.C.C.Inventors: Yoshihiko Ozawa, Han Hiong Chen, Katsu Yoshimoto
-
Patent number: 11835097Abstract: In a power transmission apparatus, an auxiliary clutch plate different in diameter from driving and driven clutch plates located in a clutch housing. When the driving and driven clutch plates are pressed against each other, the auxiliary clutch plate is pressed to enable transmission of a driving force of an engine to a driving wheel. When a pressing force exerted on the driving and driven clutch plates is released, a pressing force exerted on the auxiliary clutch plate is released to cut off transmission of the driving force of the engine to the driving wheel.Type: GrantFiled: September 14, 2020Date of Patent: December 5, 2023Assignee: KABUSHIKI KAISHA F.C.C.Inventors: Katsu Yoshimoto, Masayuki Nonaka, Yoshihiko Ozawa, Han Hiong Chen
-
Patent number: 11773923Abstract: In a power transmission apparatus, a centrifugal clutch includes a holder, a press, and springs to urge masses from a radially outer position to a radially inner position. The masses are each housed in an associated one of housing portions arranged in a circumferential direction of the holder such that the masses are radially movable. More than one spring is provided in the circumferential direction between an inner peripheral wall surface of each of the housing portions and an associated one of the masses to urge the associated mass from the radially outer position to the radially inner position.Type: GrantFiled: September 14, 2020Date of Patent: October 3, 2023Assignee: KABUSHIKI KAISHA F.C.C.Inventors: Yoshihiko Ozawa, Han Hiong Chen, Katsu Yoshimoto
-
Patent number: 11773921Abstract: In a power transmission apparatus, a second clutch includes a divider dividing driving clutch plates and driven clutch plates in an axial direction such that a first region adjacent to a clutch pressure plate and a second region adjacent to a centrifugal clutch are defined. The second clutch presses the driving clutch plates and the driven clutch plates in the first region and the second region against each other during operation of the centrifugal clutch, and presses the driving clutch plates and the driven clutch plates in the first region against each other during operation of a back torque transmission cam.Type: GrantFiled: July 29, 2021Date of Patent: October 3, 2023Assignee: KABUSHIKI KAISHA F.C.C.Inventors: Yoshihiko Ozawa, Han Hiong Chen, Katsu Yoshimoto
-
Patent number: 11754130Abstract: A power transmission apparatus a centrifugal clutch including a holder and a press. The holder and the press are each circumferentially provided with protrusions fitted and attached to cut-outs of a clutch housing. The holder is an integrated assembly into which a mass that is being held is integrated. The integrated assembly and the press are non-connected separate components and are independently movable toward or away from each other.Type: GrantFiled: September 14, 2020Date of Patent: September 12, 2023Assignee: KABUSHIKI KAISHA F.C.C.Inventors: Yoshihiko Ozawa, Han Hiong Chen, Katsu Yoshimoto
-
Publication number: 20230279908Abstract: In a power transmission apparatus a second clutch includes a divider dividing driving clutch plates and driven clutch plates in an axial direction such that a first region adjacent to a clutch pressure plate and a second region adjacent to a centrifugal clutch are defined. The second clutch presses the driving clutch plates and the driven clutch plates in the first region and the second region against each other during operation of the centrifugal clutch, and presses the driving clutch plates and the driven clutch plates in the first region against each other during operation of a back torque transmission cam.Type: ApplicationFiled: July 29, 2021Publication date: September 7, 2023Inventors: Yoshihiko OZAWA, Han Hiong CHEN, Katsu YOSHIMOTO
-
Publication number: 20230272825Abstract: A power transmission apparatus includes a clutch connected to an output shaft to rotate a wheel of a vehicle, and a clutch pressure plate movable between an operating position where driving and driven clutch plates are pressed against each other so as to enable transmission of a driving force of an engine to the wheel and a non-operating position where a pressing force exerted on the driving and driven clutch plates is released so as to cut off transmission of the driving force of the engine to the wheel. One of the driven clutch plates is attached to a second clutch, and another is attached to the clutch pressure plate. The clutch pressure plate includes an oil flow passage through which oil flows to the driven clutch plate attached to the clutch pressure plate.Type: ApplicationFiled: July 29, 2021Publication date: August 31, 2023Inventors: Yoshihiko OZAWA, Han Hiong CHEN, Katsu YOSHIMOTO
-
Patent number: 11703093Abstract: During movement of a mass of a centrifugal clutch a radially inner position to a radially outer position and a resulting increase in torque transmitted from an input gear to an output shaft, a power transmission apparatus includes a first torque region where the apparatus restricts operation of a pressing assist cam and a second torque region where the apparatus allows operation of the pressing assist cam.Type: GrantFiled: September 14, 2020Date of Patent: July 18, 2023Assignee: KABUSHIKI KAISHA F.C.C.Inventors: Yoshihiko Ozawa, Han Hiong Chen, Katsu Yoshimoto
-
Publication number: 20230213071Abstract: During movement of a mass of a centrifugal clutch a radially inner position to a radially outer position and a resulting increase in torque transmitted from an input gear to an output shaft, a power transmission apparatus includes a first torque region where the apparatus restricts operation of a pressing assist cam and a second torque region where the apparatus allows operation of the pressing assist cam.Type: ApplicationFiled: December 7, 2022Publication date: July 6, 2023Inventors: Yoshihiko OZAWA, Han Hiong CHEN, Katsu YOSHIMOTO
-
Patent number: 11661981Abstract: A power transmission device has a first pressure member (5a), a second pressure member (5b) and a back-torque transmitting cam. The first pressure member (5a) presses the drive-side clutch plates (6) and the driven-side clutch plates (7) against each other. The second pressure member (5b) releases a press-contact force between the drive-side clutch plates (6) and the driven-side clutch plates (7). The back-torque transmitting cam moves the second pressure member (5b) relative to the first pressure member (5a) to keep pressing the drive-side clutch plates (6) and the driven-side clutch plates (7) against each other when a rotational force is input to the clutch member (4), via the output shaft (3), in a process where the weight member (8) moves from the radially-outer position to the radially-inner position and the first pressure member (5a) moves to follow the interlocking member (9).Type: GrantFiled: July 8, 2022Date of Patent: May 30, 2023Assignee: Kabushiki Kaisha F.C.C.Inventors: Yoshihiko Ozawa, Han Hiong Chen, Katsu Yoshimoto
-
Publication number: 20230145318Abstract: In a power transmission apparatus, a centrifugal clutch includes a holder, a press, and springs to urge masses from a radially outer position to a radially inner position. The masses are each housed in an associated one of housing portions arranged in a circumferential direction of the holder such that the masses are radially movable. More than one spring is provided in the circumferential direction between an inner peripheral wall surface of each of the housing portions and an associated one of the masses to urge the associated mass from the radially outer position to the radially inner position.Type: ApplicationFiled: September 14, 2020Publication date: May 11, 2023Inventors: Yoshihiko OZAWA, Han Hiong CHEN, Katsu YOSHIMOTO
-
Publication number: 20230144189Abstract: In a power transmission apparatus, a centrifugal clutch includes a holder, a press, a first spherical 14bodv that is partially protruded from a first opening and in contact with a rolling contact surface of the press so as to be rollable thereon, and a second spherical body that is partially protruded from a second opening and in contact with a rolling contact surface of the holder so as to be rollable thereon. A through hole has a tapered shape from the first opening to the second opening. Disconnection of the first spherical body is prevented by an outer peripheral edge of one of the first opening and the second opening that has a smaller diameter.Type: ApplicationFiled: September 14, 2020Publication date: May 11, 2023Inventors: Yoshihiko OZAWA, Han Hiong CHEN, Katsu YOSHIMOTO
-
Publication number: 20230135364Abstract: In a power transmission apparatus, an auxiliary clutch plate different in diameter from driving and driven clutch plates located in a clutch housing. When the driving and driven clutch plates are pressed against each other, the auxiliary clutch plate is pressed to enable transmission of a driving force of an engine to a driving wheel. When a pressing force exerted on the driving and driven clutch plates is released, a pressing force exerted on the auxiliary clutch plate is released to cut off transmission of the driving force of the engine to the driving wheel.Type: ApplicationFiled: September 14, 2020Publication date: May 4, 2023Inventors: Katsu YOSHIMOTO, Masayuki NONAKA, Yoshihiko OZAWA, Han Hiong CHEN
-
Publication number: 20230136770Abstract: A power transmission apparatus a centrifugal clutch including a holder and a press. The holder and the press are each circumferentially provided with protrusions fitted and attached to cut-outs of a clutch housing. The holder is an integrated assembly into which a mass that is being held is integrated. The integrated assembly and the press are non-connected separate components and are independently movable toward or away from each other.Type: ApplicationFiled: September 14, 2020Publication date: May 4, 2023Inventors: Yoshihiko OZAWA, Han Hiong CHEN, Katsu YOSHIMOTO
-
Publication number: 20230138425Abstract: During movement of a mass of a centrifugal clutch a radially inner position to a radially outer position and a resulting increase in torque transmitted from an input gear to an output shaft, a power transmission apparatus includes a first torque region where the apparatus restricts operation of a pressing assist cam and a second torque region where the apparatus allows operation of the pressing assist cam.Type: ApplicationFiled: September 14, 2020Publication date: May 4, 2023Inventors: Yoshihiko OZAWA, Han Hiong CHEN, Katsu YOSHIMOTO
-
Publication number: 20230102112Abstract: During movement of a mass of a centrifugal clutch a radially inner position to a radially outer position and a resulting increase in torque transmitted from an input gear to an output shaft, a power transmission apparatus includes a first torque region where the apparatus restricts operation of a pressing assist cam and a second torque region where the apparatus allows operation of the pressing assist cam.Type: ApplicationFiled: December 7, 2022Publication date: March 30, 2023Inventors: Yoshihiko OZAWA, Han Hiong CHEN, Katsu YOSHIMOTO
-
Publication number: 20220341474Abstract: A power transmission device has a first pressure member (5a), a second pressure member (5b) and a back-torque transmitting cam. The first pressure member (5a) presses the drive-side clutch plates (6) and the driven-side clutch plates (7) against each other. The second pressure member (5b) releases a press-contact force between the drive-side clutch plates (6) and the driven-side clutch plates (7). The back-torque transmitting cam moves the second pressure member (5b) relative to the first pressure member (5a) to keep pressing the drive-side clutch plates (6) and the driven-side clutch plates (7) against each other when a rotational force is input to the clutch member (4), via the output shaft (3), in a process where the weight member (8) moves from the radially-outer position to the radially-inner position and the first pressure member (5a) moves to follow the interlocking member (9).Type: ApplicationFiled: July 8, 2022Publication date: October 27, 2022Inventors: Yoshihiko OZAWA, Han Hiong CHEN, Katsu YOSHIMOTO
-
Patent number: 11434966Abstract: A power transmission device has a first pressure member (5a), a second pressure member (5b) and a back-torque transmitting cam. The first pressure member (5a) presses the drive-side clutch plates (6) and the driven-side clutch plates (7) against each other. The second pressure member (5b) releases a press-contact force between the drive-side clutch plates (6) and the driven-side clutch plates (7). The back-torque transmitting cam moves the second pressure member (5b) relative to the first pressure member (5a) to keep pressing the drive-side clutch plates (6) and the driven-side clutch plates (7) against each other when a rotational force is input to the clutch member (4), via the output shaft (3), in a process where the weight member (8) moves from the radially-outer position to the radially-inner position and the first pressure member (5a) moves to follow the interlocking member (9).Type: GrantFiled: June 2, 2021Date of Patent: September 6, 2022Assignee: Kabushiki Kaisha F.C.C.Inventors: Yoshihiko Ozawa, Han Hiong Chen, Katsu Yoshimoto
-
Patent number: 11359678Abstract: A power transmission device has a pressure member 5, drive-side clutch plates, driven-side clutch plates, a clutch spring 10, a separate receiving member 11, and a back-torque limiting cam. A radially-outside restricting portion restricts radially-outward movement of the receiving member 11 relative to the pressure member 5. This maintains clearance t between a side surface 11d of the receiving member 11 and an inner peripheral wall 4e of a clutch member 4.Type: GrantFiled: July 10, 2020Date of Patent: June 14, 2022Assignee: Kabushiki Kaisha F.C.C.Inventors: Junichi Nishikawa, Katsu Yoshimoto, Han Hiong Chen, Yoshihiko Ozawa