Patents by Inventor Yoshitaka Ishimaru

Yoshitaka Ishimaru 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: 10830300
    Abstract: A vehicle drum brake including: a pair of brake shoes arranged to be expanded on a backing plate; a first parking lever disposed to rotate around a predetermined mounting shaft positioned at one end portion of one of the brake shoes; a second parking lever made up of a member different from the first parking lever, disposed to rotate around the mounting shaft, and coupled to and rotated together with the first parking lever; and a strut including a first strut member engaged with the first and second parking levers, the first and second parking levers are coupled to each other by a coupling pin so as to be engaged with the first strut member at the same time.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: November 10, 2020
    Assignees: HOSEI BRAKE INDUSTRY CO., LTD., ADVICS CO., LTD.
    Inventors: Satoru Shintani, Koji Mori, Kenichi Myojo, Hiroshi Hasegawa, Yoshitaka Ishimaru, Keiichi Tsurumi
  • Publication number: 20190293136
    Abstract: A vehicle drum brake including: a pair of brake shoes arranged to be expanded on a backing plate; a first parking lever disposed to rotate around a predetermined mounting shaft positioned at one end portion of one of the brake shoes; a second parking lever made up of a member different from the first parking lever, disposed to rotate around the mounting shaft, and coupled to and rotated together with the first parking lever; and a strut including a first strut member engaged with the first and second parking levers, the first and second parking levers are coupled to each other by a coupling pin so as to be engaged with the first strut member at the same time.
    Type: Application
    Filed: May 23, 2017
    Publication date: September 26, 2019
    Applicants: HOSEI BRAKE INDUSTRY CO., LTD., ADVICS CO., LTD.
    Inventors: Satoru SHINTANI, Koji MORI, Kenichi MYOJO, Hiroshi HASEGAWA, Yoshitaka ISHIMARU, Keiichi TSURUMI
  • Patent number: 9822832
    Abstract: A disc brake device includes flat springs assembled in a support body and holding the brake pad back plates. The flat springs have a C-shaped part provided with: a connection surface part comprising a pad-receiving surface part; an outer circumferential surface part extending along the rotor circumferential direction from the end region of the connection surface part in the rotor radially outward direction; and an inner circumferential surface part extending along the rotor circumferential direction from the end region of the connection surface part in the rotor radially inward direction. Each flat spring also has a tongue-shaped part that: extends towards the connection surface part from the tip region of the inner circumferential surface part in the rotor circumferential direction; elastically engages an inner circumferential wall of a recess at a tip region of the tongue-shaped part; and biases the pad-receiving surface part towards a base wall of the recess.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: November 21, 2017
    Assignee: ADVICS CO., LTD.
    Inventors: Yuichi Takeo, Yoshitaka Ishimaru, Yosuke Kamiya, Yohei Komizo
  • Publication number: 20160084329
    Abstract: A disc brake device includes flat springs assembled in a support body and holding the brake pad back plates. The flat springs have a C-shaped part provided with: a connection surface part comprising a pad-receiving surface part; an outer circumferential surface part extending along the rotor circumferential direction from the end region of the connection surface part in the rotor radially outward direction; and an inner circumferential surface part extending along the rotor circumferential direction from the end region of the connection surface part in the rotor radially inward direction. Each flat spring also has a tongue-shaped part that: extends towards the connection surface part from the tip region of the inner circumferential surface part in the rotor circumferential direction; elastically engages an inner circumferential wall of a recess at a tip region of the tongue-shaped part; and biases the pad-receiving surface part towards a base wall of the recess.
    Type: Application
    Filed: April 24, 2014
    Publication date: March 24, 2016
    Applicant: ADVICS CO., LTD.
    Inventors: Yuichi TAKEO, Yoshitaka ISHIMARU, Yosuke KAMIYA, Yohei KOMIZO
  • Patent number: 7637332
    Abstract: A transmission mechanism and a pressure oil supply system therefor are provided for use in work vehicles provided with a work device externally of the body of the vehicle at longitudinal one side thereof, the transmission mechanism being simple in construction and serving to shorten the overall length of the vehicle while holding a transmission shaft interconnecting a PTO shaft and an input shaft for the work device close to a horizontal. A work vehicle provided with a work device in front of the vehicle body comprises a transmission 30 disposed between a differential gear unit 10 and an HST 20 and providing a travel cooperative mechanism, a PTO shaft projecting from the housing of the HST 20, and a PTO cooperative mechanism disposed in the housing for dividedly deriving power for the PTO shaft from the travel cooperative mechanism for the transmission of the power.
    Type: Grant
    Filed: December 18, 2007
    Date of Patent: December 29, 2009
    Assignee: Kanzaki Kokyukoki Mfg., Co., Ltd.
    Inventors: Yoshitaka Ishimaru, Shusuke Nemoto, Shigenori Sakikawa, Kenichi Takada
  • Patent number: 7516685
    Abstract: There is provided a PTO transmission structure including a PTO driving shaft operatively connected to a driving source, a PTO driven shaft arranged in a downstream side in a transmission direction of the PTO driving shaft, a PTO clutch unit for selectively performing power transmission/power interruption from the PTO driving shaft to the PTO driven shaft, and a transmission case for supporting the PTO driving shaft and the PTO driven shaft and for accommodating the PTO clutch unit. The transmission case has a case main body which includes a first wall having a first hole for supporting the PTO driving shaft, and a second wall having a second hole for supporting the PTO driven shaft, the second wall being spaced apart from the first wall so as to define a first accommodating space to position the PTO clutch unit between the first wall and the second wall.
    Type: Grant
    Filed: February 3, 2005
    Date of Patent: April 14, 2009
    Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.
    Inventors: Tomoyuki Ebihara, Rei Maeda, Hirohiko Kawada, Toshiyuki Hasegawa, Yoshitaka Ishimaru, Tomoyuki Tsuji
  • Patent number: 7422077
    Abstract: A transmission mechanism and a pressure oil supply system therefor are provided for use in work vehicles provided with a work device externally of the body of the vehicle at longitudinal one side thereof, the transmission mechanism being simple in construction and serving to shorten the overall length of the vehicle while holding a transmission shaft interconnecting a PTO shaft and an input shaft for the work device close to a horizontal. A work vehicle provided with a work device in front of the vehicle body comprises a transmission disposed between a differential gear unit and an HST and providing a travel cooperative mechanism, a PTO shaft projecting from the housing of the HST, and a PTO cooperative mechanism disposed in the housing for dividedly deriving power for the PTO shaft from the travel cooperative mechanism for the transmission of the power.
    Type: Grant
    Filed: March 20, 2006
    Date of Patent: September 9, 2008
    Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.
    Inventors: Yoshitaka Ishimaru, Shusuke Nemoto, Shigenori Sakikawa, Kenichi Takada
  • Patent number: 7398853
    Abstract: In a frame structure of a vehicle that includes a flywheel housing, an intermediate housing and a transmission case that are connected to each other along a longitudinal axis of the vehicle to constitute a vehicle frame, the intermediate housing has a hollow shape with a first end and a second end located along the longitudinal axis of the vehicle, the first end having an abutting surface against which the second end of the flywheel housing abuts, a support surface located radially inwardly of the abutting surface so as to support the forward/rearward movement switching unit, and an opening surrounded by the support surface, the opening serving as a first-end opening of the intermediate housing along the longitudinal axis of the vehicle. The abutting surface and the support surface along the longitudinal axis of the vehicle are located so that at least a portion of the forward/rearward movement switching unit is accommodated within the flywheel housing.
    Type: Grant
    Filed: December 10, 2003
    Date of Patent: July 15, 2008
    Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.
    Inventors: Kazuhiko Ohtsuki, Toshiyuki Hasegawa, Atsuo Yoshina, Yoshitaka Ishimaru
  • Publication number: 20080152517
    Abstract: A multiple pump unit is used for operating a plurality of actuators, and includes a plurality of pump shafts and a plurality of hydraulic pumps. The plurality of pump shafts is driven by an electric motor. The plurality of hydraulic pumps is driven by the plurality of pump shafts. Pressurized oil for operating the plurality of actuators is fed out from the plurality of hydraulic pumps.
    Type: Application
    Filed: December 20, 2007
    Publication date: June 26, 2008
    Applicant: KANZAKI KOKYUKOKI MFG. CO., LTD.
    Inventors: Norihiro ISHII, Yoshitaka ISHIMARU
  • Publication number: 20080098851
    Abstract: A transmission mechanism and a pressure oil supply system therefor are provided for use in work vehicles provided with a work device externally of the body of the vehicle at longitudinal one side thereof, the transmission mechanism being simple in construction and serving to shorten the overall length of the vehicle while holding a transmission shaft interconnecting a PTO shaft and an input shaft for the work device close to a horizontal. A work vehicle provided with a work device in front of the vehicle body comprises a transmission 30 disposed between a differential gear unit 10 and an HST 20 and providing a travel cooperative mechanism, a PTO shaft projecting from the housing of the HST 20, and a PTO cooperative mechanism disposed in the housing for dividedly deriving power for the PTO shaft from the travel cooperative mechanism for the transmission of the power.
    Type: Application
    Filed: December 18, 2007
    Publication date: May 1, 2008
    Applicant: Kanzaki Kokyukoki Mfg., Co., Ltd.
    Inventors: Yoshitaka Ishimaru, Shusuke Nemoto, Shigenori Sakikawa, Kenichi Takada
  • Patent number: 7275372
    Abstract: A hydrostatic transmission for vehicle interposed in a drive-power transmission path between a driving power source and a driving axle for non-stepwisely changing the speed of the vehicle includes an HST housing; a hydraulic pump unit having a pump shaft with first and second ends extending in a fore-aft direction of the vehicle away from each other; a hydraulic motor unit having a motor shaft for outputting the drive power from the motor shaft whose speed is non-stepwisely varied in cooperation with the hydraulic pump unit; a PTO unit having a PTO shaft extending in the fore-aft direction of the vehicle, the PTO shaft being operatively connected to the pump shaft; a charge pump unit for replenishing pressurized hydraulic fluid to a hydraulic circuit, the hydraulic circuit hydraulically connecting the hydraulic pump unit with the hydraulic motor unit, the charge pump unit including a charge pump body, and a charge pump case connected to the HST housing through its wall closer to the driving axle for supportin
    Type: Grant
    Filed: November 29, 2006
    Date of Patent: October 2, 2007
    Inventors: Yoshitaka Ishimaru, Shigenori Sakikawa, Shinya Sakakura
  • Publication number: 20070072728
    Abstract: A hydrostatic transmission for vehicle interposed in a drive-power transmission path between a driving power source and a driving axle for non-stepwisely changing the speed of the vehicle includes an HST housing; a hydraulic pump unit having a pump shaft with first and second ends extending in a fore-aft direction of the vehicle away from each other; a hydraulic motor unit having a motor shaft for outputting the drive power from the motor shaft whose speed is non-stepwisely varied in cooperation with the hydraulic pump unit; a PTO unit having a PTO shaft extending in the fore-aft direction of the vehicle, the PTO shaft being operatively connected to the pump shaft; a charge pump unit for replenishing pressurized hydraulic fluid to a hydraulic circuit, the hydraulic circuit hydraulically connecting the hydraulic pump unit with the hydraulic motor unit, the charge pump unit including a charge pump body, and a charge pump case connected to the HST housing through its wall closer to the driving axle for supportin
    Type: Application
    Filed: November 29, 2006
    Publication date: March 29, 2007
    Inventors: Yoshitaka Ishimaru, Shigenori Sakikawa, Shinya Sakakura
  • Patent number: 7150693
    Abstract: A hydrostatic transmission for vehicle interposed in a drive-power transmission path between a driving power source and a driving axle for non-stepwisely changing the speed of the vehicle includes an HST housing; a hydraulic pump unit having a pump shaft with first and second ends extending in a fore-aft direction of the vehicle away from each other; a hydraulic motor unit having a motor shaft for outputting the drive power from the motor shaft whose speed is non-stepwisely varied in cooperation with the hydraulic pump unit; a PTO unit having a PTO shaft extending in the fore-aft direction of the vehicle, the PTO shaft being operatively connected to the pump shaft; a charge pump unit for replenishing pressurized hydraulic fluid to a hydraulic circuit, the hydraulic circuit hydraulically connecting the hydraulic pump unit with the hydraulic motor unit, the charge pump unit including a charge pump body, and a charge pump case connected to the HST housing through its wall closer to the driving axle for supportin
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: December 19, 2006
    Inventors: Yoshitaka Ishimaru, Shigenori Sakikawa, Shinya Sakakura
  • Patent number: 7140457
    Abstract: A transmission mechanism and a pressure oil supply system therefor are provided for use in work vehicles provided with a work device externally of the body of the vehicle at longitudinal one side thereof, the transmission mechanism being simple in construction and serving to shorten the overall length of the vehicle while holding a transmission shaft interconnecting a PTO shaft and an input shaft for the work device close to a horizontal. A work vehicle provided with a work device in front of the vehicle body comprises a transmission 30 disposed between a differential gear unit 10 and an HST 20 and providing a travel cooperative mechanism, a PTO shaft projecting from the housing of the HST 20, and a PTO cooperative mechanism disposed in the housing for dividedly deriving power for the PTO shaft from the travel cooperative mechanism for the transmission of the power.
    Type: Grant
    Filed: July 19, 2004
    Date of Patent: November 28, 2006
    Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.
    Inventors: Yoshitaka Ishimaru, Shusuke Nemoto, Shigenori Sakikawa, Kenichi Takada
  • Publication number: 20060196709
    Abstract: A transmission mechanism and a pressure oil supply system therefor are provided for use in work vehicles provided with a work device externally of the body of the vehicle at longitudinal one side thereof, the transmission mechanism being simple in construction and serving to shorten the overall length of the vehicle while holding a transmission shaft interconnecting a PTO shaft and an input shaft for the work device close to a horizontal. A work vehicle provided with a work device in front of the vehicle body comprises a transmission 30 disposed between a differential gear unit 10 and an HST 20 and providing a travel cooperative mechanism, a PTO shaft projecting from the housing of the HST 20, and a PTO cooperative mechanism disposed in the housing for dividedly deriving power for the PTO shaft from the travel cooperative mechanism for the transmission of the power.
    Type: Application
    Filed: March 20, 2006
    Publication date: September 7, 2006
    Inventors: Yoshitaka Ishimaru, Shusuke Nemoto, Shigenori Sakikawa, Kenichi Takada
  • Publication number: 20050172740
    Abstract: There is provided a PTO transmission structure including a PTO driving shaft operatively connected to a driving source, a PTO driven shaft arranged in a downstream side in a transmission direction of the PTO driving shaft, a PTO clutch unit for selectively performing power transmission/power interruption from the PTO driving shaft to the PTO driven shaft, and a transmission case for supporting the PTO driving shaft and the PTO driven shaft and for accommodating the PTO clutch unit. The transmission case has a case main body which includes a first wall having a first hole for supporting the PTO driving shaft, and a second wall having a second hole for supporting the PTO driven shaft, the second wall being spaced apart from the first wall so as to define a first accommodating space to position the PTO clutch unit between the first wall and the second wall.
    Type: Application
    Filed: February 3, 2005
    Publication date: August 11, 2005
    Inventors: Tomoyuki Ebihara, Rei Maeda, Hirohiko Kawada, Toshiyuki Hasegawa, Yoshitaka Ishimaru, Tomoyuki Tsuji
  • Publication number: 20050039451
    Abstract: A hydrostatic transmission for vehicle interposed in a drive-power transmission path between a driving power source and a driving axle for non-stepwisely changing the speed of the vehicle includes an HST housing; a hydraulic pump unit having a pump shaft with first and second ends extending in a fore-aft direction of the vehicle away from each other; a hydraulic motor unit having a motor shaft for outputting the drive power from the motor shaft whose speed is non-stepwisely varied in cooperation with the hydraulic pump unit; a PTO unit having a PTO shaft extending in the fore-aft direction of the vehicle, the PTO shaft being operatively connected to the pump shaft; a charge pump unit for replenishing pressurized hydraulic fluid to a hydraulic circuit, the hydraulic circuit hydraulically connecting the hydraulic pump unit with the hydraulic motor unit, the charge pump unit including a charge pump body, and a charge pump case connected to the HST housing through its wall closer to the driving axle for supportin
    Type: Application
    Filed: September 17, 2004
    Publication date: February 24, 2005
    Inventors: Yoshitaka Ishimaru, Shigenori Sakikawa, Shinya Sakakura
  • Publication number: 20040262054
    Abstract: A transmission mechanism and a pressure oil supply system therefor are provided for use in work vehicles provided with a work device externally of the body of the vehicle at longitudinal one side thereof, the transmission mechanism being simple in construction and serving to shorten the overall length of the vehicle while holding a transmission shaft interconnecting a PTO shaft and an input shaft for the work device close to a horizontal.
    Type: Application
    Filed: July 19, 2004
    Publication date: December 30, 2004
    Inventors: Yoshitaka Ishimaru, Shusuke Nemoto, Shigenori Sakikawa, Kenichi Takada
  • Patent number: 6830116
    Abstract: A transmission mechanism and a pressure oil supply system therefor are provided for use in work vehicles provided with a work device externally of the body of the vehicle at longitudinal one side thereof, the transmission mechanism being simple in construction and serving to shorten the overall length of the vehicle while holding a transmission shaft interconnecting a PTO shaft and an input shaft for the work device close to a horizontal. A work vehicle provided with a work device in front of the vehicle body comprises a transmission 30 disposed between a differential gear unit 10 and an HST 20 and providing a travel cooperative mechanism, a PTO shaft projecting from the housing of the HST 20, and a PTO cooperative mechanism disposed in the housing for dividedly deriving power for the PTO shaft from the travel cooperative mechanism for the transmission of the power.
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: December 14, 2004
    Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.
    Inventors: Yoshitaka Ishimaru, Shusuke Nemoto, Shigenori Sakikawa, Kenichi Takada
  • Patent number: 6802183
    Abstract: A hydrostatic transmission for vehicle interposed in a drive-power transmission path between a driving power source and a driving axle for non-stepwisely changing the speed of the vehicle includes an HST housing; a hydraulic pump unit having a pump shaft with first and second ends extending in a fore-aft direction of the vehicle away from each other; a hydraulic motor unit having a motor shaft for outputting the drive power from the motor shaft whose speed is non-stepwisely varied in cooperation with the hydraulic pump unit; a PTO unit having a PTO shaft extending in the fore-aft direction of the vehicle, the PTO shaft being operatively connected to the pump shaft; a charge pump unit for replenishing pressurized hydraulic fluid to a hydraulic circuit, the hydraulic circuit hydraulically connecting the hydraulic pump unit with the hydraulic motor unit, the charge pump unit including a charge pump body, and a charge pump case connected to the HST housing through its wall closer to the driving axle for supportin
    Type: Grant
    Filed: June 18, 2003
    Date of Patent: October 12, 2004
    Inventors: Yoshitaka Ishimaru, Shigenori Sakikawa, Shinya Sakakura