Patents Assigned to Yamazaki Corporation
  • Patent number: 6845538
    Abstract: The lower end of the rotative brush 12 contacts the cleaning subject surface 26. As the driving wheels 14 roll on the cleaning subject surface 26, the rotative brush 12 rotates, while being guided by the sweep-up slope surface 10e1 of the slope surface forming portion 10e, the dust 28 on the cleaning subject surface 26 is swept up by the rotation of the rotative brush 12. The dust 28 is separated from the rotative brush 12 and received in the dust receiver 10a. Substantially at the same time as this, the cleaning subject surface 26 can be wiped while pressing the sheet-like wiping member 24 against the cleaning subject surface 26.
    Type: Grant
    Filed: April 10, 2003
    Date of Patent: January 25, 2005
    Assignee: Yamazaki Corporation
    Inventor: Kazuo Nakamura
  • Patent number: 4823422
    Abstract: A manual cleaner has a case, a roller brush having driven rollers and mounted between the side plates of the case, wheels kept in contact with the driven rollers and mounted on axles extending in parallel with the roller bruch, and dust pans provided at both sides of the roller brush. The dust pans are formed at both sides with bearing projections rotatably received in the side plates of the case so as to be pivotable about the projections. The projections are each formed with an axle receiving hole elongated horizontally so that the axles received in the holes can move toward and away from the roller brush. Thus the wheels can move toward and away from the driven rollers while keeping the dust pans in a stationary position. The shaft of the roller brush has both ends vertically movably mounted in bearing plates provided at both sides of the case and biased by springs downwardly. Spring members integrally formed on the bearing plates extend in opposite directions to abut and urge the dust pans closed.
    Type: Grant
    Filed: June 3, 1988
    Date of Patent: April 25, 1989
    Assignee: Yamazaki Corporation
    Inventors: Kouichi Yoshimura, Tsuyoshi Ishii
  • Patent number: 4811446
    Abstract: A mop holder comprising a retainer and a mop gripper, both of them being of an inverted U-shaped section and the mop gripper being inserted in the retainer. A mop is gripped between the leg portions of the mop gripper by the engagement with stoppers formed on the inner surface of the mop gripper. The guide ridges formed on the mop gripper are adapted to engage the longitudinal flange formed on the retainer to keep the mop gripper from getting off the retainer.
    Type: Grant
    Filed: October 13, 1987
    Date of Patent: March 14, 1989
    Assignee: Yamazaki Corporation
    Inventor: Koji Tsukamoto
  • Patent number: 4809387
    Abstract: A mop adapted to be squeezed by a pair of rollers mounted on the mop itself. The mop has a handle, a wiper, a squeezing cover, and a pair of rollers mounted in oblique guide slits formed in the squeezing cover. When the squeezing cover is moved down the handle, the rollers are guided to move toward each other so that the wiper caught between the rollers will be tightly squeezed by and between the rollers.
    Type: Grant
    Filed: October 13, 1987
    Date of Patent: March 7, 1989
    Assignee: Yamazaki Corporation
    Inventors: Kazuo Nakamura, Yasuaki Keiko
  • Patent number: D308741
    Type: Grant
    Filed: September 17, 1987
    Date of Patent: June 19, 1990
    Assignee: Yamazaki Corporation
    Inventor: Koji Tsukamoto
  • Patent number: D311077
    Type: Grant
    Filed: September 17, 1987
    Date of Patent: October 2, 1990
    Assignee: Yamazaki Corporation
    Inventors: Kazuo Nakamura, Yasuaki Keiko
  • Patent number: D321961
    Type: Grant
    Filed: October 4, 1988
    Date of Patent: November 26, 1991
    Assignee: Yamazaki Corporation
    Inventors: Tsuyoshi Ishii, Koichi Yoshimura