Patents by Inventor Edward Yeh

Edward Yeh 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: 6016830
    Abstract: A non-riser valve assembly 30 includes a bonnet or housing 32, a bushing 34, a stem 36, a washer 38 and a stop 40. The assembly 30 further includes a coupling 42, a rotatable or movable disk 44, a fixed disk 46 and a bottom seal 48. In assembly, the bushing 34 and the stem 36 are located within an opening 50 of the housing 32 with the bushing being located between the housing and the stem. One of the stem 36 extends from one end of the opening 50 and the stop 40 is removably attached to the stem to limit the rotational movement of the stem within the housing. The coupling 42 is located in the opening 50 of the housing 32 and is in driving engagement with the opposite end of the stem 36. The movable disk 44 is located with the opening 50 and is coupled to the coupling 42 for rotation therewith. The fixed disk 46 is attached to the housing 32 within the opening 50 and is formed with a surface 224 which is in water-sealing engagement with a surface 162 of the movable disk 44.
    Type: Grant
    Filed: June 3, 1998
    Date of Patent: January 25, 2000
    Assignee: Emhart, Inc.
    Inventors: Shahriar Niakan, Yuhung Edward Yeh
  • Patent number: 5971359
    Abstract: A non-riser valve assembly 30 includes a bonnet or housing 32, a bushing 34, a stem 36, a washer 38 and a stop 40. The assembly 30 further includes a coupling 42, a rotatable or movable disk 44, a fixed disk 46 and a bottom seal 48. In assembly, the bushing 34 and the stem 36 are located within an opening 50 of the housing 32 with the bushing being located between the housing and the stem. One of the stem 36 extends from one end of the opening 50 and the stop 40 is removably attached to the stem to limit the rotational movement of the stem within the housing. The coupling 42 is located in the opening 50 of the housing 32 and is in driving engagement with the opposite end of the stem 36. The movable disk 44 is located with the opening 50 and is coupled to the coupling 42 for rotation therewith. The fixed disk 46 is attached to the housing 32 within the opening 50 and is formed with a surface 224 which is in water-sealing engagement with a surface 162 of the movable disk 44.
    Type: Grant
    Filed: June 3, 1998
    Date of Patent: October 26, 1999
    Assignee: Emhart Inc.
    Inventors: Shahriar Niakan, Yuhung Edward Yeh
  • Patent number: 5941503
    Abstract: A non-riser valve assembly 30 includes a bonnet or housing 32, a bushing 34, a stem 36, a washer 38 and a stop 40. The assembly 30 further includes a coupling 42, a rotatable or movable disk 44, a fixed disk 46 and a bottom seal 48. In assembly, the bushing 34 and the stem 36 are located within an opening 50 of the housing 32 with the bushing being located between the housing and the stem. One of the stem 36 extends from one end of the opening 50 and the stop 40 is removably attached to the stem to limit the rotational movement of the stem within the housing. The coupling 42 is located in the opening 50 of the housing 32 and is in driving engagement with the opposite end of the stem 36. The movable disk 44 is located with the opening 50 and is coupled to the coupling 42 for rotation therewith. The fixed disk 46 is attached to the housing 32 within the opening 50 and is formed with a surface 224 which is in water-sealing engagement with a surface 162 of the movable disk 44.
    Type: Grant
    Filed: June 3, 1998
    Date of Patent: August 24, 1999
    Assignee: Emhart Inc.
    Inventors: Shahriar Niakan, Yuhung Edward Yeh
  • Patent number: 5931181
    Abstract: A faucet system includes a cold water control valve and a hot water control valve. These control valves are in communication with each other through a cold water supply conduit and a mixed water conduit. The hot water control valve includes a needle valve and a valve seat. The needle valve is adjustable with respect to the valve seat to adjust the maximum temperature of hot water being supplied by the hot water control valve to the mixed water conduit. In one embodiment, the hot water control valve of the faucet system further includes a pressure balancer disposed between the hot and cold water supply and the hot and cold control valves.
    Type: Grant
    Filed: June 19, 1997
    Date of Patent: August 3, 1999
    Assignee: Emhart Inc.
    Inventors: William David Cook, Yuhung Edward Yeh
  • Patent number: 5904336
    Abstract: A non-riser valve assembly 30 includes a bonnet or housing 32, a bushing 34, a stem 36, a washer 38 and a stop 40. The assembly 30 further includes a coupling 42, a rotatable or movable disk 44, a fixed disk 46 and a bottom seal 48. In assembly, the bushing 34 and the stem 36 are located within an opening 50 of the housing 32 with the bushing being located between the housing and the stem. One of the stem 36 extends from one end of the opening 50 and the stop 40 is removably attached to the stem to limit the rotational movement of the stem within the housing. The coupling 42 is located in the opening 50 of the housing 32 and is in driving engagement with the opposite end of the stem 36. The movable disk 44 is located with the opening 50 and is coupled to the coupling 42 for rotation therewith. The fixed disk 46 is attached to the housing 32 within the opening 50 and is formed with a surface 224 which is in water-sealing engagement with a surface 162 of the movable disk 44.
    Type: Grant
    Filed: April 15, 1996
    Date of Patent: May 18, 1999
    Assignee: Emhart Inc.
    Inventors: Shahriar Niakan, Yuhung Edward Yeh
  • Patent number: 5884652
    Abstract: A pressure balancer system 10 having a pressure balancer 20 and a temperature controller 24 on one side of the system and a volume controller 14 on the other side of the system. The pressure balancer 20 receives hot and cold water which it discharges into the temperature controller 24 at substantially constant preselected pressure. The temperature controller 24 is adjustable to set the temperature of the flow to keep the temperature of the anti-scald below the maximum temperature of between 115.degree. F. and 120.degree. F. The volume controller received the temperature adjusted flow from the temperature controller and will set the volume of the flow at the desired volume for discharge therefrom.
    Type: Grant
    Filed: May 27, 1997
    Date of Patent: March 23, 1999
    Assignee: Emhart Inc.
    Inventors: Yuhung Edward Yeh, William David Cook, Mark Steven Bloom