Patents by Inventor Hai Van Do Van

Hai Van Do Van 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).

  • Valve for rapid inflation and deflation
    Patent number: 9278641
    Abstract: A valve for selectively sealing and unsealing an opening in a bladder is disclosed. The valve includes a flange for mounting the valve around the opening in the bladder, a valve seat supported on the flange, and an air passageway. A spring plate is supported on the flange and spaced from the valve seat. A floating valve disk is provided between the valve seat and the spring plate for movement towards and away from the valve seat to seal and unseal the opening in the bladder. A spring is provided to bias the floating valve disk towards the valve seat. Deflation lugs are provided to hold the floating valve disk away from the valve seat against the force of the spring. The floating valve disk is free to pivot but is prevented from pivoting to such an extent that movement of the floating valve disk is impeded as by binding.
    Type: Grant
    Filed: January 21, 2014
    Date of Patent: March 8, 2016
    Inventor: Hai Van Do Van
  • Valve for rapid inflation and deflation
    Publication number: 20140202556
    Abstract: A valve for selectively sealing and unsealing an opening in a bladder is disclosed. The valve includes a flange for mounting the valve around the opening in the bladder, a valve seat supported on the flange, and an air passageway. A spring plate is supported on the flange and spaced from the valve seat. A floating valve disk is provided between the valve seat and the spring plate for movement towards and away from the valve seat to seal and unseal the opening in the bladder. A spring is provided to bias the floating valve disk towards the valve seat. Deflation lugs are provided to hold the floating valve disk away from the valve seat against the force of the spring. The floating valve disk is free to pivot but is prevented from pivoting to such an extent that movement of the floating valve disk is impeded as by binding.
    Type: Application
    Filed: January 21, 2014
    Publication date: July 24, 2014
    Inventor: Hai Van Do Van