Patents by Inventor Kensuke Kamada

Kensuke Kamada 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: 12528556
    Abstract: A vehicle includes a first suspension between a body and a front wheel, and a second suspension between the body and a rear wheel. An angle ?1 represents a ramp brake-over angle, and angles ?2, ?3, and ?4 respectively represent angles corresponding to the ramp brake-over angle when the first and the second suspension are fully stretched, fully compressed and fully stretched respectively, and fully stretched and fully compressed respectively. When a wheelbase is not smaller than about 1340 mm, the angle ?1 is not smaller than about 55 degrees, a value ?2/?1 is not smaller than about 1.25, a value ?3/?1 is not smaller than about 0.9, and a value ?4/?1 is not smaller than about 0.8. When the wheelbase is not smaller than about 1340 mm and not greater than about 2000 mm, a wheel travel on the rear wheel side is not smaller than about 360 mm, a ratio of a stretch-side value to a compression-side value (stretch-side/compression-side) of the wheel travel on the rear wheel side is not smaller than about 0.
    Type: Grant
    Filed: June 28, 2022
    Date of Patent: January 20, 2026
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Tatsuya Tanaka, Kensuke Kamada
  • Patent number: 12503191
    Abstract: A vehicle, including: a body frame; a saddle-style seat provided on the body frame; a pair of front wheels provided at a front portion of the body frame; a pair of rear wheels provided at a rear portion of the body frame; an engine provided in the body frame and including a crank shaft extending in a width direction of the vehicle; and a footrest provided at the body frame and including a first step and a second step provided behind the first step and extending diagonally rearward. The crank shaft is located between an upper end and a lower end of the second step in a height direction of the vehicle, and further rearward than the second step in a fore-aft direction of the vehicle.
    Type: Grant
    Filed: August 30, 2023
    Date of Patent: December 23, 2025
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Masahiro Yoshida, Kensuke Kamada, Tatsuya Tanaka
  • Patent number: 12377929
    Abstract: A vehicle includes an upper frame, a lower frame, a front frame, a rear frame, a pair of rear wheels, a drive motor to drive the pair of rear wheels, a battery supported by the upper frame and the lower frame to supply electric power to the drive motor, a straddled seat at a higher position than the drive motor, and a bar handle at a higher position than the straddled seat. The battery includes a battery lower portion and a battery upper portion. The battery upper portion includes a projection that overhangs in at least a horizontal direction with respect to the battery lower portion. At least a portion of the drive motor is below or directly below the projection.
    Type: Grant
    Filed: December 15, 2022
    Date of Patent: August 5, 2025
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Kensuke Osawa, Kazunari Takata, Atsushi Yasuda, Masahiro Yoshida, Kenta Higashiyama, Kensuke Kamada, Seiji Umekita, Yasuo Miyake
  • Patent number: 12257872
    Abstract: A vehicle, including: a pair of front wheels; a pair of rear wheels; a saddle-style seat, positioned at an intermediate region in a width direction of the vehicle; a steering shaft provided ahead of the seat; a bar handle connected with an upper portion of the steering shaft, the bar handle having a pair of grips; a front fender provided above the pair of front wheels, striding over the pair of front wheels in a plan view of the vehicle; and a pair of suspensions, top ends of which are located ahead of the two grips, and are positioned, in the plan view of the vehicle, more inboard than widthwise ends of the two grips in the width direction of the vehicle. Each suspension includes, at an upper portion thereof, a suspension adjusting portion. The front fender includes a pair of openings through which the suspension adjusting portions are accessible.
    Type: Grant
    Filed: March 29, 2024
    Date of Patent: March 25, 2025
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Kensuke Kamada, Tatsuya Tanaka
  • Publication number: 20240326541
    Abstract: A vehicle, including: a pair of front wheels; a pair of rear wheels; a saddle-style seat, positioned at an intermediate region in a width direction of the vehicle; a steering shaft provided ahead of the seat; a bar handle connected with an upper portion of the steering shaft, the bar handle having a pair of grips; a front fender provided above the pair of front wheels, striding over the pair of front wheels in a plan view of the vehicle; and a pair of suspensions, top ends of which are located ahead of the two grips, and are positioned, in the plan view of the vehicle, more inboard than widthwise ends of the two grips in the width direction of the vehicle. Each suspension includes, at an upper portion thereof, a suspension adjusting portion. The front fender includes a pair of openings through which the suspension adjusting portions are accessible.
    Type: Application
    Filed: March 29, 2024
    Publication date: October 3, 2024
    Inventors: Kensuke KAMADA, Tatsuya TANAKA
  • Patent number: 12024259
    Abstract: A vehicle includes a front differential, a pair of constant-velocity joints, and a steering mechanism. The steering mechanism includes a pitman arm, a pair of tie rods, a pair of first link arms each connecting the pitman arm with a corresponding one of the pair of tie rods, and a pair of second link arms each connecting a corresponding one of the pair of first link arms with a body frame. In a plan view, at least a portion of each constant-velocity joint is located between first and second straight lines extending in a fore-aft direction and through first and second connectors extending between the tie rods and the first link arms. The first connector, the second connector, and at least a portion of each constant-velocity joint are located between third and fourth straight lines extending between the first and second link arms.
    Type: Grant
    Filed: February 1, 2023
    Date of Patent: July 2, 2024
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Kensuke Kamada, Tatsuya Tanaka
  • Publication number: 20240076005
    Abstract: A vehicle, including: a body frame; a saddle-style seat provided on the body frame; a pair of front wheels provided at a front portion of the body frame; a pair of rear wheels provided at a rear portion of the body frame; an engine provided in the body frame and including a crank shaft extending in a width direction of the vehicle; and a footrest provided at the body frame and including a first step and a second step provided behind the first step and extending diagonally rearward. The crank shaft is located between an upper end and a lower end of the second step in a height direction of the vehicle, and further rearward than the second step in a fore-aft direction of the vehicle.
    Type: Application
    Filed: August 30, 2023
    Publication date: March 7, 2024
    Inventors: Masahiro YOSHIDA, Kensuke KAMADA, Tatsuya TANAKA
  • Publication number: 20230242204
    Abstract: A vehicle includes a front differential, a pair of constant-velocity joints, and a steering mechanism. The steering mechanism includes a pitman arm, a pair of tie rods, a pair of first link arms each connecting the pitman arm with a corresponding one of the pair of tie rods, and a pair of second link arms each connecting a corresponding one of the pair of first link arms with a body frame. In a plan view, at least a portion of each constant-velocity joint is located between first and second straight lines extending in a fore-aft direction and through first and second connectors extending between the tie rods and the first link arms. The first connector, the second connector, and at least a portion of each constant-velocity joint are located between third and fourth straight lines extending between the first and second link arms.
    Type: Application
    Filed: February 1, 2023
    Publication date: August 3, 2023
    Inventors: Kensuke KAMADA, Tatsuya TANAKA
  • Publication number: 20230192216
    Abstract: A vehicle includes an upper frame, a lower frame, a front frame, a rear frame, a pair of rear wheels, a drive motor to drive the pair of rear wheels, a battery supported by the upper frame and the lower frame to supply electric power to the drive motor, a straddled seat at a higher position than the drive motor, and a bar handle at a higher position than the straddled seat. The battery includes a battery lower portion and a battery upper portion. The battery upper portion includes a projection that overhangs in at least a horizontal direction with respect to the battery lower portion. At least a portion of the drive motor is below or directly below the projection.
    Type: Application
    Filed: December 15, 2022
    Publication date: June 22, 2023
    Inventors: Kensuke OSAWA, Kazunari TAKATA, Atsushi YASUDA, Masahiro YOSHIDA, Kenta HIGASHIYAMA, Kensuke KAMADA, Seiji UMEKITA, Yasuo MIYAKE
  • Publication number: 20230192215
    Abstract: A vehicle includes upper frames, lower frames, a front frame, a rear frame, a pair of front wheels, a pair of rear wheels, a bar handle to steer the pair of front wheels, a drive motor to drive the pair of rear wheels, a battery to supply electric power to the drive motor, and a straddled seat provided at a higher position than the drive motor. The drive motor and the battery are located in a region surrounded by the upper frames, the lower frames, the front frame, and the rear frame in a side view of the vehicle.
    Type: Application
    Filed: December 15, 2022
    Publication date: June 22, 2023
    Inventors: Kazunari TAKATA, Kensuke OSAWA, Atsushi YASUDA, Masahiro YOSHIDA, Kensuke KAMADA, Kenta HIGASHIYAMA, Seiji UMEKITA, Yasuo MIYAKE
  • Publication number: 20230192232
    Abstract: A vehicle includes upper frames, lower frames, a front frame, a rear frame, a pair of rear wheels, a drive motor to drive the pair of rear wheels, a battery to supply electric power to the drive motor, an endless power transmission to connect the drive motor with the pair of rear wheels, a pivot shaft attached to the rear frame, a swing arm supported pivotably by the pivot shaft and supporting the pair of rear wheels, a straddled seat at a higher position than the drive motor, and a bar handle provided at a higher position than the straddled seat. The drive motor is located farther forward than the swing arm.
    Type: Application
    Filed: December 15, 2022
    Publication date: June 22, 2023
    Inventors: Kensuke OSAWA, Kazunari TAKATA, Atsushi YASUDA, Masahiro YOSHIDA, Kenta HIGASHIYAMA, Kensuke KAMADA, Seiji UMEKITA, Yasuo MIYAKE
  • Publication number: 20230136419
    Abstract: A vehicle includes a first suspension between a body and a front wheel, and a second suspension between the body and a rear wheel. An angle ?1 represents a ramp brake-over angle, and angles ?2, ?3, and ?4 respectively represent angles corresponding to the ramp brake-over angle when the first and the second suspension are fully stretched, fully compressed and fully stretched respectively, and fully stretched and fully compressed respectively. When a wheelbase is not smaller than about 1340 mm, the angle ?1 is not smaller than about 55 degrees, a value ?2/?1 is not smaller than about 1.25, a value ?3/?1 is not smaller than about 0.9, and a value ?4/?1 is not smaller than about 0.8. When the wheelbase is not smaller than about 1340 mm and not greater than about 2000 mm, a wheel travel on the rear wheel side is not smaller than about 360 mm, a ratio of a stretch-side value to a compression-side value (stretch-side/compression-side) of the wheel travel on the rear wheel side is not smaller than about 0.
    Type: Application
    Filed: June 28, 2022
    Publication date: May 4, 2023
    Inventors: Tatsuya TANAKA, Kensuke KAMADA
  • Patent number: 10800491
    Abstract: An upper arm projected line L5 is defined as a straight line formed by projecting an upper arm line L3 onto the projection line P1. a lower arm projected line L6 is defined as a straight line formed by projecting the lower arm line L4 onto the projection line P1. An intersection point Px1 between the upper arm projected line L5 and the lower arm projected line L6 is located in a region A1 defined higher than the horizontal plane P2 and defined farther outward in the right-left direction than the ski 4. The suspension enables turning performance of the straddle-type vehicle to be improved.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: October 13, 2020
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Takeshi Kinugasa, Takashi Imamura, Kensuke Kamada, Ryuta Koshiishi
  • Publication number: 20190047661
    Abstract: An upper arm projected line L5 is defined as a straight line formed by projecting an upper arm line L3 onto the projection line P1. a lower arm projected line L6 is defined as a straight line formed by projecting the lower arm line L4 onto the projection line P1. An intersection point Px1 between the upper arm projected line L5 and the lower arm projected line L6 is located in a region A1 defined higher than the horizontal plane P2 and defined farther outward in the right-left direction than the ski 4. The suspension enables turning performance of the straddle-type vehicle to be improved.
    Type: Application
    Filed: August 7, 2018
    Publication date: February 14, 2019
    Inventors: Takeshi KINUGASA, Takashi IMAMURA, Kensuke KAMADA, Ryuta KOSHIISHI
  • Publication number: 20080292541
    Abstract: An easy-to handle hydrogen generating agent has been invented in which a hydrogen compound such as alkali metal hydrides, alkali earth metal hydrides and metal borohydride salts is embedded in a water-soluble solid compound such as a polyethylene glycol and organic acid. The hydrogen generating agent dissolves in water to slowly generate hydrogen gas. The oxidation-reduction potential of the water that has dissolved the hydrogen generating agent is shifted to the reducing side remarkably; therefore, the hydrogen generating agent can be used for preparation of cosmetics, beverage and bath water having reducibility. Also, the generated hydrogen can be used as a fuel for a fuel cell.
    Type: Application
    Filed: November 2, 2006
    Publication date: November 27, 2008
    Applicant: HIROMAITO CO. LTD.
    Inventors: Kensuke Kamada, Testuro Nakahama
  • Patent number: 5484494
    Abstract: An amorphous alloy which has a composition represented by the general formula (Fe.sub.1-a Co.sub.a).sub.1-x-y-z P.sub.x W.sub.y M.sub.z (where 0.9.ltoreq.a, 0.04.ltoreq.x.ltoreq.0.16, 0.005.ltoreq.y.ltoreq.0.05, 0.ltoreq.z.ltoreq.0.2, and M is one or more transition elements other than Fe, Co, and W. In a method for producing the amorphous alloy comprising at least Fe, Co, P and W by electrodeposition, the electrodeposition is performed in an acidic electrolyte bath which employs phosphorous acid and/or a phosphite as the P source and sodium tungstate as the W source, or in an acidic electrolyte bath which employs sodium phosphotungstate as the P and W source. The amorphous alloy which contains phosphorous as the metalloid element exhibits little reduction in saturation magnetization, and the crystallization temperature may be increased to above 450.degree. C.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: January 16, 1996
    Assignee: Mitsubishi Rayon Company, Inc.
    Inventors: Masaharu Oda, Kensuke Kamada, Takatoshi Kubo
  • Patent number: 5435903
    Abstract: A thin amorphous alloy of cobalt, iron and phosphorus having good workability and the ability to be used as a soft magnetic material is formed by electrolytic deposition. The electrolytic bath has a pH of 1.0 to 2.2 and contains at least a divalent cobalt ion, a divalent iron ion, and phosphorous acid and/or a phosphite. The amorphous alloy contains at least 69 atomic percent cobalt, 2 to 30 atomic percent phosphorus and the iron/(cobalt+iron) atomic ratio is from 0.001 to 0.1. The alloy may be deposited on a working electrode having a chrome-plated surface with a center line average roughness of less than 1 .mu.m and may be peeled from the electrode to obtain a tape-shaped or foil-shaped product.
    Type: Grant
    Filed: November 12, 1992
    Date of Patent: July 25, 1995
    Assignee: Mitsubishi Rayon Company, Ltd.
    Inventors: Masaharu Oda, Hidehiko Ohashi, Kensuke Kamada
  • Patent number: 5215820
    Abstract: Metal-electroconductive polymer composite fine particles are here disclosed which comprises metal fine particles and an electroconductive polymer with which the surfaces of the metal fine particles are coated. Since the surfaces of the composite fine particles are coated with the polymer, the composite fine particles are excellent in handling properties and can be uniformly dispersed in an organic material.
    Type: Grant
    Filed: November 27, 1991
    Date of Patent: June 1, 1993
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Hiroshi Hosokawa, Kensuke Kamada
  • Patent number: 5154740
    Abstract: Disclosed is a membranous gas separator comprising (a) a porous substrate having an average pore diameter of not greater than 100 .ANG. and (b) a .pi.-electron conjugated conducting polymer retained within at least a part of the pores of the porous substrate in such a way that the pores are not blocked characterized in that retaining the .pi. -electron conjugated conducting polymer within the pore is carried out by a chemical oxidative polymerization.
    Type: Grant
    Filed: June 10, 1991
    Date of Patent: October 13, 1992
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Akira Motonaga, Kensuke Kamada, Jun Kamo, Hiroshi Hosokawa
  • Patent number: 5045357
    Abstract: Disclosed is a process for preparing a membranous gas separator comprising (a) a porous substrate having an average pore diameter of not greater than 100 .ANG. and (b) a .pi.-electron conjugated conducting polymer retained within at least a part of the pores of the porous substrate in such a way that the pores are not blocked, characterized in that retaining the .pi.-electron conjugated conducting polymer within the pore is carried out by a chemical oxidative polymerization.
    Type: Grant
    Filed: April 16, 1990
    Date of Patent: September 3, 1991
    Assignee: Mitsubishi Rayon Company, Ltd.
    Inventors: Akira Motonaga, Kensuke Kamada, Jun Kamo, Hiroshi Hosokawa