Patents Examined by Sidney D Hohl
  • Patent number: 11426847
    Abstract: A ratchet wrench may include a main body, a cylinder, a first sleeve, and a second sleeve. The main body has a head portion and a shank, and a first through hole horizontally penetrates through the head portion, and the cylinder is coupled in the first through hole. The inner peripheries of two ends of the cylinder respectively comprise continuous teeth to form a first tool hole and a second tool hole, and the first tool hole and the second tool hole can respectively receive a first sleeve and a second sleeve which respectively have a third tool hole and a fourth tool hole thereon. Also, the first sleeve and the second sleeve are detachable from the cylinder to install needed sleeves with different diameters of tool holes, which greatly increases the consumer purchasing intentions.
    Type: Grant
    Filed: January 12, 2021
    Date of Patent: August 30, 2022
    Inventor: Chiu-Ju Lai
  • Patent number: 11426839
    Abstract: A hand tool includes a body provided with a mounting portion. The mounting portion includes six first recessed portions, six second recessed portions, and six locking faces. Each of the first recessed portions includes two grooves. Each of the second recessed portions includes two first arcuate faces and a second arcuate face. Each of the locking faces has a planar shape and is arranged between two of the second recessed portions. Each of the first recessed portions is arranged on one of the locking faces. The locking faces define an imaginary hexagonal portion having six sides coinciding with the locking faces respectively. The mounting portion of the body is mounted on a screw member. The screw member has six ribs received in the second recessed portions. Each of the ribs rests on one of the first arcuate faces.
    Type: Grant
    Filed: January 20, 2021
    Date of Patent: August 30, 2022
    Inventor: Tsan-Chang Lee
  • Patent number: 11419468
    Abstract: A dirt separation device for a surface cleaning apparatus including: a separator for separating dirt from dirt-laden air; an inlet through which dirt-laden air is drawn into the separator; an outlet through which cleaner air exits the separator; a dirt collection chamber for receiving separated dirt; a cover member movable between a first position in which the cover member inhibits access to the dirt collection chamber and a second position in which the cover member permits access to the dirt collection chamber; an actuator device coupled to the cover member for effecting movement of the cover member from the first position to the second position, wherein the actuator device is rotationally movable, or an engagement part operably connected to the actuator device is rotationally movable, to effect movement of the closing member from the first position to the second position.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: August 23, 2022
    Inventors: Simon Matthew Rougher, Darren Holmes, Richard Waters, Anna Jaanus, Jose Casella
  • Patent number: 11376707
    Abstract: A grinding method includes an oblique grinding step of rotating a grinding wheel about the central axis of a second shaft, tilting the second shaft to a first shaft of a rotatable chuck table such that the bottom of a first portion of the grinding wheel that is positioned above an outer circumferential portion of the chuck table is higher than the bottom of a second portion of the grinding wheel that is positioned above a central portion of the chuck table, and then moving the grinding wheel and the chuck table relatively closer to each other along a direction parallel to the first shaft, thereby forming a disk-shaped recess in the reverse side of the workpiece, and a tilt changing and grinding step of grinding the reverse side of the workpiece while gradually changing a tilt of the second shaft to orient parallel to the first shaft.
    Type: Grant
    Filed: February 23, 2021
    Date of Patent: July 5, 2022
    Assignee: DISCO CORPORATION
    Inventor: Yoshikazu Suzuki
  • Patent number: 11330945
    Abstract: A cleaning device includes: a main body having a front edge; a suction device having a suction opening and a suction channel; a brush assembly having a rotatable roller brush; and an apparatus for wetting a floor to be cleaned with liquid, the apparatus being associated with the roller brush. The suction opening and the roller brush are arranged in the main body in such a manner as to face the floor to be cleaned. The suction opening has a first wall facing the front edge of the main body and a second wall facing the roller brush. The roller brush loosens dirt from the floor to be cleaned. A pivotable lip is associated with the suction opening and alternately rests against the first wall or the second wall.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: May 17, 2022
    Assignee: CARL FREUDENBERG KG
    Inventors: Alessandro Brugora, Helmut Hofmeister