Patents by Inventor Tian Fu LIN

Tian Fu LIN 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).

  • Double-layer dumb drum with sand belt adjusting function
    Patent number: 10971119
    Abstract: A double-layer dumb drum with a sand belt adjusting function includes an upper-layer elastic body, a strike edge, an upper bottom plate, a sand belt adjusting device, an internal resonance chamber, an external resonance chamber, a lower-layer elastic body, and a lower bottom plate. The upper-layer elastic body is fixed to the top of the upper bottom plate; the internal and external resonance chambers are under the upper bottom plate; the sand belt adjusting device is installed in the internal resonance chamber; and the bottom of the internal resonance chamber is sealed by the external resonance chamber. A lower-layer elastic body is fixed to the top of the lower bottom plate; contact points are at the bottom of the external resonance chamber and abut against the top of the lower-layer elastic body; and connecting screws are connected between the upper and lower bottom plates.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: April 6, 2021
    Assignee: ZHANGZHOU HANQI MUSICAL INSTRUMENTS CO., LTD.
    Inventor: Tian Fu Lin
  • DOUBLE-LAYER DUMB DRUM WITH SAND BELT ADJUSTING FUNCTION
    Publication number: 20200273437
    Abstract: A double-layer dumb drum with a sand belt adjusting function includes an upper-layer elastic body, a strike edge, an upper bottom plate, a sand belt adjusting device, an internal resonance chamber, an external resonance chamber, a lower-layer elastic body, and a lower bottom plate. The upper-layer elastic body is fixed to the top of the upper bottom plate; the internal and external resonance chambers are under the upper bottom plate; the sand belt adjusting device is installed in the internal resonance chamber; and the bottom of the internal resonance chamber is sealed by the external resonance chamber. A lower-layer elastic body is fixed to the top of the lower bottom plate; contact points are at the bottom of the external resonance chamber and abut against the top of the lower-layer elastic body; and connecting screws are connected between the upper and lower bottom plates.
    Type: Application
    Filed: March 13, 2019
    Publication date: August 27, 2020
    Inventor: Tian Fu LIN