Patents by Inventor Feiyu Li

Feiyu Li 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).

  • Publication number: 20050238460
    Abstract: A quick coupling nut includes a body having a bore therethrough and adjacent side holes. A pair of threaded members are disposed in the bore and moveable in a radial direction of the bore and a cap having a bore therethrough, coaxial with the body bore, includes depending guides which are received by the guide holes for enabling axial movement between the cap and the body. Actuators depending from the cap engage the threaded members in order to urge the threaded members radially inward to engage a threaded bolt shank, extending through the cap and body bores, as the cap is moved axially toward the body. This threaded engagements enables tightening of the quick coupling cap by rotation about the threaded bolt shank.
    Type: Application
    Filed: April 26, 2004
    Publication date: October 27, 2005
    Inventor: Feiyu Li
  • Publication number: 20050150038
    Abstract: A pressurized flush system includes a pressure water vessel having an inlet and an outlet. An infill valve, an open valve, and a flush valve are provided with the flush valve disposed within the pressure vessel and in fluid communication with the infill valve and the open valve. The flush valve includes a hollow valve body and cooperating pistons controlling water discharge from the water vessel outlet. The cooperating pistons are disposed within the hollow valve body.
    Type: Application
    Filed: November 10, 2004
    Publication date: July 14, 2005
    Inventor: Feiyu Li
  • Patent number: 6823534
    Abstract: A dual flush toilet and dual flush apparatus for a toilet having a discharge port for flushing water into a toilet bowl includes a buoyant flush valve for releasably sealing a discharge port and having a cavity for trapping air to cause a flush valve to remain open after unsealing of the flush valve from the discharge port. The flush valve has a weight for causing seating of the flush valve on the discharge port after flush the water through the discharge port. A control mechanism monitor the water tank is provided for controlling buoyancy of the flush valve by releasing entrapped air to effect either a full flush or partial flush of water from the water tank through the toilet bowl.
    Type: Grant
    Filed: April 8, 2003
    Date of Patent: November 30, 2004
    Inventor: Feiyu Li
  • Publication number: 20040199988
    Abstract: A dual flush toilet and dual flush apparatus for a toilet having a discharge port for flushing water into a toilet bowl includes a buoyant flush valve for releasably sealing a discharge port and having a cavity for trapping air to cause a flush valve to remain open after unsealing of the flush valve from the discharge port. The flush valve has a weight for causing seating of the flush valve on the discharge port after flush the water through the discharge port. A control mechanism monitor the water tank is provided for controlling buoyancy of the flush valve by releasing entrapped air to effect either a full flush or partial flush of water from the water tank through the toilet bowl.
    Type: Application
    Filed: April 8, 2003
    Publication date: October 14, 2004
    Inventor: Feiyu Li
  • Publication number: 20040194200
    Abstract: A pressure assisted dual flush operating system includes a vessel for receiving, containing and discharging pressurized water and an outlet for discharge of water from said vessel. An anti-siphon valve includes an air inlet for introducing water into said vessel and an inlet valve is provided for admitting water to the anti-siphon valve. A dual flush valve selectively releases different quantities of water from said vessel through the vessel outlet and a control valve selects one of the different quantities of water released by the dual flush valve.
    Type: Application
    Filed: November 20, 2003
    Publication date: October 7, 2004
    Inventor: Feiyu Li
  • Patent number: 6687921
    Abstract: Damping apparatus for a toilet seat and toilet cover generally includes a hinged frame and a pair of mirror image dampers disposed in the frame for coupling with the toilet seat and toilet cover and providing independent damped closure thereof. Each damper includes a housing having a chamber with a rotor therein for supporting vanes disposed in slots and pivotable therein for enabling inward and outward movement of the vanes for controlling flow of fluid therepast in order to provide damping movement.
    Type: Grant
    Filed: January 10, 2003
    Date of Patent: February 10, 2004
    Inventor: Feiyu Li
  • Patent number: 6666228
    Abstract: A ball cock assembly includes a water supply riser with a valve for controlling water flow into a toilet tank. The valve includes an arm extending therefrom for opening and closing the valve. A float container is provided and disposed adjacent to the riser for movement therealong and a float is disposed in the float container for rising within the float container upon water flow into the float container. An actuator is disposed in an operative relationship with the float, float container and valve arm for operating the valve. The actuator includes an outer member attached to the float for moving the valve arm and an inner member for adjusting a level of the float container along the riser independent of movement of the valve arm by the outer member.
    Type: Grant
    Filed: June 12, 2003
    Date of Patent: December 23, 2003
    Inventor: Feiyu Li
  • Patent number: 6510866
    Abstract: A float assembly for a ball cock assembly for a flush tank of a toilet includes an inner float component which is a buoyant element operatively connected to a shutoff valve atop a standpipe supplying water to the tank. The inner float component is disposed in an outer float component which is in the general form of a container disposed within the flush tank so that its top edge is at a selected water level. In the tank-filling portion of a flush cycle, when the water rises to the selected level, the outer float component suddenly becomes filled with water, causing the inner float element to abruptly rise, shutting off the flow of water into the flush tank. In this manner, the buoyant element is caused to rise at a rate which is greater than a rate at which the water is rising in the tank.
    Type: Grant
    Filed: March 26, 2001
    Date of Patent: January 28, 2003
    Assignee: WDI International, Inc.
    Inventor: Feiyu Li
  • Publication number: 20020134432
    Abstract: A float assembly for a ball cock assembly for a flush tank of a toilet includes an inner float component which is a buoyant element operatively connected to a shutoff valve atop a standpipe supplying water to the tank. The inner float component is disposed in an outer float component which is in the general form of a container disposed within the flush tank so that its top edge is at a selected water level. In the tank-filling portion of a flush cycle, when the water rises to the selected level, the outer float component suddenly becomes filled with water, causing the inner float element to abruptly rise, shutting off the flow of water into the flush tank. In this manner, the buoyant element is caused to rise at a rate which is greater than a rate at which the water is rising in the tank.
    Type: Application
    Filed: March 26, 2001
    Publication date: September 26, 2002
    Inventor: Feiyu Li