Patents by Inventor Katsuhiko Arakawa

Katsuhiko Arakawa 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).

  • Hydraulic steering apparatus for an outboard engine
    Patent number: 7147525
    Abstract: A hydraulic steering apparatus 1 has a substantially bow-shaped frame 2, which includes a pair of end portions 2a bent forward. A piston rod 3 is supported by and between the end portions 2a. A hydraulic cylinder 5 is supported by the piston rod 3 slidably along it. The frame 2 also includes a middle portion 2A, which has bolt holes 2B cut through it. Bolts 11 extend through the bolt holes 2B and engage with the front end of the swivel bracket 41 of an outboard engine 40 to fix the frame 2 to the bracket. The cylinder 5 is linked to the front end of the steering lever 46 of the engine 40 by a steering link 7.
    Type: Grant
    Filed: January 11, 2005
    Date of Patent: December 12, 2006
    Assignees: Marol Co., Ltd., Y's Gear Co., Ltd.
    Inventors: Katsuhiko Sasayama, Katsuhiko Arakawa
  • Steering apparatus for an outboard marine engine
    Patent number: 7037152
    Abstract: A tilt tube 21 extends along a horizontal tilt axis B. A steering hydraulic cylinder 8 slides along a piston rod 7, which extends in parallel with the tilt axis B. An eccentric link shaft 6 is positioned between the tilt tube 21 and piston rod 7 and extends in parallel with the tilt axis B. A pair of linking means 4 supports the tilt tube 21, link shaft 6 and piston rod 7. The distance L0 between the tilt tube 21 and piston rod 7 is shorter than the sum of the distance L1 between the tilt tube 21 and the link shaft 6 and the distance L2 between the link shaft 6 and the piston rod 7.
    Type: Grant
    Filed: August 25, 2004
    Date of Patent: May 2, 2006
    Assignees: Marol Co., Ltd., Y'S Gear Co., Ltd.
    Inventors: Katsuhiko Sasayama, Kenichi Shimada, Katsuhiko Arakawa
  • Steering apparatus for an outboard marine engine
    Publication number: 20050221696
    Abstract: A tilt tube 21 extends along a horizontal tilt axis B. A steering hydraulic cylinder 8 slides along a piston rod 7, which extends in parallel with the tilt axis B. An eccentric link shaft 6 is positioned between the tilt tube 21 and piston rod 7 and extends in parallel with the tilt axis B. A pair of linking means 4 supports the tilt tube 21, link shaft 6 and piston rod 7. The distance L0 between the tilt tube 21 and piston rod 7 is shorter than the sum of the distance L1 between the tilt tube 21 and the link shaft 6 and the distance L2 between the link shaft 6 and the piston rod 7.
    Type: Application
    Filed: August 25, 2004
    Publication date: October 6, 2005
    Inventors: Katsuhiko Sasayama, Kenichi Shimada, Katsuhiko Arakawa
  • Hydraulic steering apparatus for an outboard engine
    Publication number: 20050164572
    Abstract: A hydraulic steering apparatus 1 has a substantially bow-shaped frame 2, which includes a pair of end portions 2a bent forward. A piston rod 3 is supported by and between the end portions 2a. A hydraulic cylinder 5 is supported by the piston rod 3 slidably along it. The frame 2 also includes a middle portion 2A, which has bolt holes 2B cut through it. Bolts 11 extend through the bolt holes 2B and engage with the front end of the swivel bracket 41 of an outboard engine 40 to fix the frame 2 to the bracket. The cylinder 5 is linked to the front end of the steering lever 46 of the engine 40 by a steering link 7.
    Type: Application
    Filed: January 11, 2005
    Publication date: July 28, 2005
    Inventors: Katsuhiko Sasayama, Katsuhiko Arakawa