Patents by Inventor Daijiro Yamasaki

Daijiro Yamasaki 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: 7322608
    Abstract: A steering column apparatus comprises a steering shaft having its rear end to which a steering wheel is secured, a steering column supporting rotatably the steering shaft and adjustable of its length in axial directions together the steering shaft, and telescopic position fixing means for fixing the steering column to a desired length. The steering column is constructed of an outer column fixed on a car body side and an inner column slidably fitted in the outer column. The telescopic position fixing means is constructed of a lock housing formed on the outer column, first and second press blocks slidably held by the lock housing and moving forwards and backwards in a way that embraces an outer peripheral surface of the inner column, and presses block driving means for bringing the first and second press-blocks into a press-contact with the inner column.
    Type: Grant
    Filed: December 4, 2003
    Date of Patent: January 29, 2008
    Assignee: NSK Ltd.
    Inventors: Kou Yamamoto, Daijiro Yamasaki
  • Patent number: 7216561
    Abstract: A tilt adjusting type steering apparatus for a vehicle, comprises a front column member fixed to a car body, a rear column member connected in a swayable manner to said front column member, a fixed gear formed on one of the front column member and the rear column member, a movable gear formed on the other of the front column member and the rear column member, a gear pressing lever swayed to effect fastening at a tilt adjusted position by making the movable gear mesh with the fixed gear or to effect releasing from the tilt adjusting position by disengaging the two gears from each other, and an operator lever for interlocking with and swaying the gear pressing lever while being swayed by an operation of an operator.
    Type: Grant
    Filed: July 9, 2003
    Date of Patent: May 15, 2007
    Assignee: NSK Ltd.
    Inventor: Daijiro Yamasaki
  • Publication number: 20040113408
    Abstract: A steering column apparatus comprises a steering shaft having its rear end to which a steering wheel is secured, a steering column supporting rotatably the steering shaft and adjustable of its length in axial directions together the steering shaft, and telescopic position fixing means for fixing the steering column to a desired length. The steering column is constructed of an outer column fixed on a car body side and an inner column slidably fitted in the outer column. The telescopic position fixing means is constructed of a lock housing formed on the outer column, first and second press blocks slidably held by the lock housing and moving forwards and backwards in a way that embraces an outer peripheral surface of the inner column, and presses block driving means for bringing the first and second press-blocks into a press-contact with the inner column.
    Type: Application
    Filed: December 4, 2003
    Publication date: June 17, 2004
    Applicant: NSK Ltd.
    Inventors: Kou Yamamoto, Daijiro Yamasaki
  • Publication number: 20040007863
    Abstract: A tilt adjusting type steering apparatus for a vehicle, comprises a front column member fixed to a car body, a rear column member connected in a swayable manner to said front column member, a fixed gear formed on one of the front column member and the rear column member, a movable gear formed on the other of the front column member and the rear column member, a gear pressing lever swayed to effect fastening at a tilt adjusted position by making the movable gear mesh with the fixed gear or to effect releasing from the tilt adjusting position by disengaging the two gears from each other, and an operator lever for interlocking with and swaying the gear pressing lever while being swayed by an operation of an operator.
    Type: Application
    Filed: July 9, 2003
    Publication date: January 15, 2004
    Applicant: NSK Ltd.
    Inventor: Daijiro Yamasaki
  • Patent number: 5580314
    Abstract: In order to obtain sufficient energy absorbing capacity and, at the same time, to reduce the number of components and simplify assembly, synthetic resin is disposed between a shaft and a tube. The synthetic resin is torn and broken when strong compressive force in the axial direction is given at the time of a car crash, allowing the shaft to be pushed deeply into the tube until it contacts a pin. In this state, the contact position between one end of the tube and a cover tube substantially coincides with a small-cross-section portion formed in an intermediate part of the shaft. As a result, the shaft can bend at the small-cross-section portion.
    Type: Grant
    Filed: October 27, 1994
    Date of Patent: December 3, 1996
    Assignee: NSK Ltd.
    Inventors: Seiichi Moriyama, Katsumi Saito, Daijiro Yamasaki