Patents by Inventor Hendrikus J. van der Meyden

Hendrikus J. van der Meyden 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).

  • Safety syringe
    Patent number: 6132401
    Abstract: The invention concerns a safety syringe in which the needle may be held within a sheath both before and particulary after use without handling.
    Type: Grant
    Filed: November 3, 1998
    Date of Patent: October 17, 2000
    Assignee: Nordway Limited
    Inventors: Hendrikus J Van Der Meyden, Alexis A Wadman
  • Vial for use as syringe accessory
    Patent number: 6080131
    Abstract: A vial comprises a tubular syringe barrel (1) closed at one end (2) and open at the other, a stopper in the open barrel end formed by a piston head (4) of a syringe, and valve means (10) in the barrel between the stopper and the closed barrel end. The valve means (1) is normally closed and actuatable to an open condition by movement of the stopper into the barrel, and is slidable with the piston head (4) to the closed barrel end (2).
    Type: Grant
    Filed: November 3, 1998
    Date of Patent: June 27, 2000
    Assignee: Nordway Limited
    Inventors: Hendrikus J Van Der Meyden, Alexis A. F. Wadman
  • Cleaning apparatus for submerged surfaces
    Patent number: 5301380
    Abstract: A pool cleaner (1) has a suction head (2) with a flow interrupter having a ball (12) movable to interrupt a primary liquid flow through the suction head and a release means (16) is located downstream of the ball (12) and has a flow passage allowing an auxiliary liquid flow into the tube when the ball interrupts the primary liquid flow. The auxiliary flow abruptly dislodges the ball and allows primary liquid flow.
    Type: Grant
    Filed: October 19, 1992
    Date of Patent: April 12, 1994
    Assignee: Cleave Corporation
    Inventors: Alexis A. F. Wadman, Hendrikus J. van der Meyden