Patents by Inventor Kunito Shirai

Kunito Shirai 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).

  • Bottom structure of a bed
    Patent number: 5448789
    Abstract: The present invention provides a bottom structure for a bed having a lifting mechanism and plural parallel bottom strips connected sequentially by elastic strips, thus allowing the bottom to be bent. The elastic strips are curved in areas not in contact with the bottom strips so that the bottom structure can be adjusted in length.
    Type: Grant
    Filed: December 21, 1993
    Date of Patent: September 12, 1995
    Assignee: Paramount Bed Company Limited
    Inventor: Kunito Shirai
  • Bottom structure of a bed
    Patent number: 5388290
    Abstract: The present invention provides a bottom structure for a bed having a bottom lifting mechanism, comprising plural parallel bottom strips; each of the bottom strips being sequentially connected to allow bottom bending; and each of the bottom strips, having a tenon formed in the longitudinal axial direction of the bed on one of the faces to be face-to-face with the adjacent bottom strip, and having a mortise formed in the opposite face, so as to be loosely engaged with the tenon of the adjacent bottom strip.
    Type: Grant
    Filed: December 21, 1993
    Date of Patent: February 14, 1995
    Assignee: Paramount Bed Company Limited
    Inventor: Kunito Shirai
  • Bottom structure of a bed
    Patent number: 5377369
    Abstract: The present invention provides a bottom structure for a bed having a bottom lifting mechanism, comprising parallel bottom strips, each strip having coupling grooves, located in the opposing faces of the bottom strips in the longitudinal direction, the strips being sequentially connected by coupling members. Each coupling member has portions corresponding to the coupling grooves at both ends of the coupling member which are incorporated as components of the bottom structure of the bed.
    Type: Grant
    Filed: December 21, 1993
    Date of Patent: January 3, 1995
    Assignee: Paramount Bed Company Limited
    Inventor: Kunito Shirai
  • Bottom structure of a bed
    Patent number: 5377373
    Abstract: The present invention provides a bottom structure for a bed having a bottom lifting mechanism, comprising bendable and extensible flexible hollow bottom members, provided in the bottom structure allowing the bottom to be bent.
    Type: Grant
    Filed: December 21, 1993
    Date of Patent: January 3, 1995
    Assignee: Paramount Bed Company Limited
    Inventor: Kunito Shirai