Patents Assigned to WDI International
  • Patent number: 9144354
    Abstract: A lift-off toilet seat includes a hinge body for pivotably supporting a toilet seat and a mounting block having a slot therethrough for enabling positionable attachment of the block to a toilet seat via a bolt. A buckle extends from the hinge body and slidably engages sides of the block with the block having a top opening for enabling both the bolt to pass therethrough and positioning of the block on the toilet bowl together with the hinge body and toilet seat. A cover, hinged to the buckle is provided for covering the buckle and locking the buckle to the block.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: September 29, 2015
    Assignee: WDI INTERNATIONAL, INC
    Inventor: Mingchang Yang
  • Patent number: 8205274
    Abstract: A toilet featuring a lift and clean toilet seat hinge includes a toilet bowl, toilet seat, and the hinge includes a hinge base, a post, and a flap for closing the hinge base. The mounting post is provided with an expandable head and the flap includes a ring for expanding the head in order to releasably lock the mounting post to the toilet seat hinge base.
    Type: Grant
    Filed: November 1, 2007
    Date of Patent: June 26, 2012
    Assignee: WDI International, Inc.
    Inventors: Shan Lin, Yanxin Xu
  • Patent number: 8122526
    Abstract: A toilet flush flapper valve includes a flapper and a ballast with a vent hole for enabling air to escape from the ballast, the ballast is rotatably fixed to the flapper for enabling positioning of the vent hole for controlling buoyancy of the ballast in order to control closing time of said flapper.
    Type: Grant
    Filed: April 1, 2008
    Date of Patent: February 28, 2012
    Assignee: WDI International, Inc.
    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
  • Patent number: 5904176
    Abstract: A float-controlled, ball cock assembly comprises an improved two-piece valve useful with either a fixed height or an adjustable height riser. The two-piece valve includes a resilient valve seal element and a rigid valve cap fitted together to form an annular chamber therebetween. A rigid spacer sleeve is positioned in the chamber to limit the movement of the valve seal element between the closed position in contact with a valve seat and the open position spaced from the valve seat. The adjustable height riser includes inlet and outlet tubes, each composed of two parts telescopically engaging one another. Adjustment of the height of the riser is achieved by the use of one or more T-shaped tabs which are secured by a lock collar threaded onto the outer of the two telescoping outlet tubes and which can be moved locking into and out of engagement with radially extending grooves on the outer surface of the inner outlet tube.
    Type: Grant
    Filed: August 26, 1997
    Date of Patent: May 18, 1999
    Assignee: WDI International
    Inventor: Frank Li
  • Patent number: D638917
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: May 31, 2011
    Assignee: WDI International, Inc.
    Inventors: Yibin Chen, Baojia Huang, Yuzhi Liu
  • Patent number: D424168
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: May 2, 2000
    Assignee: WDI International, Inc.
    Inventor: Gary R. Higgins