Patents by Inventor Li-Fu Yu

Li-Fu Yu 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: 8108955
    Abstract: A motor with nozzle for a massage bathtub includes a cover, a silica gel ring, a water separator, at least one vent silica gel, at least one removable nozzle, a butterfly bolt, a propeller, a seat, and a motor. The seat is installed by an air inflow pipe, and air outlets and lamp holes are formed therein. A center axle of the motor is scaled from water and a connecting hole is formed on an end of the center axle. The butterfly bolt is screwed to the connecting hole to fix the propeller. The water separator is installed above the propeller and the vent silica gel and the removable nozzle are installed to the water separator. The cover is covered onto the seat of a motor body through the silica gel ring.
    Type: Grant
    Filed: October 16, 2008
    Date of Patent: February 7, 2012
    Assignee: Egis Bathware Development Co., Ltd
    Inventor: Li-Fu Yu
  • Publication number: 20100095449
    Abstract: A motor with nozzle for a massage bathtub includes a cover, a silica gel ring, a water separator, at least one vent silica gel, at least one removable nozzle, a butterfly bolt, a propeller, a seat, and a motor. The seat is installed by an air inflow pipe, and air outlets and lamp holes are formed therein. A center axle of the motor is sealed from water and a connecting hole is formed on an end of the center axle. The butterfly bolt is screwed to the connecting hole to fix the propeller. The water separator is installed above the propeller and the vent silica gel and the removable nozzle are installed to the water separator. The cover is covered onto the seat of a motor body through the silica gel ring.
    Type: Application
    Filed: October 16, 2008
    Publication date: April 22, 2010
    Inventor: Li-Fu Yu
  • Publication number: 20090123311
    Abstract: A plunger-slipper assembly of a high-pressure pump is herein claimed. The plunger-slipper assembly comprises a plunger and a slipper. The plunger has a first end and a second end, which are both spherical ends. The slipper comprises a coaxial hole for receiving the plunger and the coaxial hole has a spherical space formed at the extremity thereof for accommodating the second end of the plunger. The first end of the plunger juts out from the slipper. Further, the diameter of the coaxial hole of the slipper is slightly larger than the diameter of the plunger. An oil-filling channel lengthwise penetrates the plunger through the first end to the second end thereof. An oil-guiding channel radially penetrates the wall of the slipper and connects with the extremity of the coaxial hole. A first annular groove is deposited at the outer wall of the slipper. A third annular groove is also deposited surrounding the outer wall of the slipper. An annular stuff is settled in the third annular groove.
    Type: Application
    Filed: November 9, 2007
    Publication date: May 14, 2009
    Inventor: Li-Fu Yu
  • Patent number: 5745933
    Abstract: A pre-washing device for water circulating tubes of a massaging bath tub includes a cap member for a water circulating tube head, a rotary adjustment block locked with the cap member and formed with opposing wedge-shaped openings, and an inner seat located at the water circulating tube head and having channels for the adjustment block to rotate to two stages. A partitioning plate is disposed in the inner seat and includes wedge-shaped openings corresponding to those of the adjustment block. The adjustment block rotates relative to the inner seat so as to align or offset to control the flow of water from the bath tub into the cap member. A valve body and an independent tube are disposed in the water circulating tube head. The valve body is controlled in cooperation with the opening and closing of the water circulating tube head. That is, when the water circulating tube is closed, the valve body is opened, permitting the water to flow from the independent tube into the water circulating tube for pre-washing.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: May 5, 1998
    Inventor: Li-Fu Yu
  • Patent number: D624561
    Type: Grant
    Filed: December 24, 2008
    Date of Patent: September 28, 2010
    Inventor: Li-Fu Yu