Patents by Inventor Patrick TSAI

Patrick TSAI 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: 20130091665
    Abstract: A door closer for a top hung sliding door has a buffer mechanism and a trolley hanger. The buffer mechanism includes a stationary base, a sliding block, a hook, two buffers and two resilient members. The sliding block is slidably mounted on the stationary base. The hook is pivotally mounted on the sliding block. The buffers are mounted on the stationary base and each buffer has a piston rod secured to the sliding block. The resilient members are mounted on the stationary base and each resilient member has one end secured to the sliding block. The trolley hanger has at least one engaging recess selectively engaging the hook. Therefore, the buffers can provide a buffering force and the resilient members can release a resilient force to reduce a moving speed of a door panel.
    Type: Application
    Filed: October 18, 2011
    Publication date: April 18, 2013
    Inventor: Patrick TSAI
  • Patent number: 8402606
    Abstract: A door closer for a top hung sliding door has a buffer mechanism and a trolley hanger. The buffer mechanism includes a stationary base, a sliding block, a hook, two buffers and two resilient members. The sliding block is slidably mounted on the stationary base. The hook is pivotally mounted on the sliding block. The buffers are mounted on the stationary base and each buffer has a piston rod secured to the sliding block. The resilient members are mounted on the stationary base and each resilient member has one end secured to the sliding block. The trolley hanger has at least one engaging recess selectively engaging the hook. Therefore, the buffers can provide a buffering force and the resilient members can release a resilient force to reduce a moving speed of a door panel.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: March 26, 2013
    Inventor: Patrick Tsai