Patents by Inventor Fubito Shimada

Fubito Shimada 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: 5257667
    Abstract: A first rotation driving mechanism including a hydraulic motor (26), a driving gear (27), and a driven gear (29) is provided between a coupling arm unit (12) attachable to the operational arm of a construction machine such as a hydraulic shovel, etc., and a hanger unit (14) to relatively rotate them in the horizontal plane, and at the same time, a second rotation driving mechanism including a hydraulic cylinder (32) and a rocking arm (34) is provided between the hanger unit (14) and a main body (20) to rotate them in the vertical plane. The positional changes of the hanger unit (14) and the main body (20) are automatically performed by a remote control rapidly and easily, and further, with safety to improve the mobility and operativity of the piling, and the pile installation and removal.
    Type: Grant
    Filed: November 8, 1991
    Date of Patent: November 2, 1993
    Assignee: Kencho Kobe Co., Ltd.
    Inventors: Yuji Sano, Fubito Shimada
  • Patent number: 5177386
    Abstract: A vibration generator comprises a first rotational shaft 21 and second rotational shaft 22, with fixed driving gears 31 and 33, movable driving gears 32 and 34, fixed eccentric weights 51A and 52A, and movable eccentric weights 51B and 52B, and on the outer periphery of the phase adjustment shaft 23 which is arranged in parallel therewith, spiral grooves 61 and 62 are provided at two locations in the rotative directions opposite to each other, and at the same time, on the inner periphery of a pair of phase adjustment gears 35 and 36, pins 63 and 64 are planted to be slidably fitted into the above-mentioned spiral grooves 61 and 62. Then, the phase adjustment shaft 23 is forced by a cylinder 50 in the axial direction.The vibromotive force can be varied arbitrarily and infinitely, even during operation; yet the structure is simple and rational, and is fabricated easily.
    Type: Grant
    Filed: August 23, 1991
    Date of Patent: January 5, 1993
    Assignee: Kencho Kobe Co., Ltd.
    Inventor: Fubito Shimada
  • Patent number: 5168938
    Abstract: A pile driver includes an attachment frame fixed to a work arm of appropriate construction equipment that serves as a base machine, a vibration cylinder actuated and controlled by an electro-hydraulic hydraulic servo-valve and mounted on the attachment frame through a rubber buffer, and a counter weight and a chucking means for gripping a pile to be driven K provided on the axial ends, that is, on the cylinder base and on the forward end of the piston, the pile being held in such a manner that the drive direction coincides with the axis of the vibration cylinder.
    Type: Grant
    Filed: March 20, 1991
    Date of Patent: December 8, 1992
    Assignees: Kabushikikaisha Takahashi Engineering, Kencho Kobe Co., Ltd.
    Inventors: Yuji Sano, Fubito Shimada, Yasuo Tasaki, Seizo Kumai