Patents by Inventor Joseph E. Levasseur

Joseph E. Levasseur 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: 5178186
    Abstract: A valve stem and body combination for flow control in fluid delivery systems for biomedical applications. The valve body includes a smaller conduit that can be aligned with an exit port in the valve stem to achieve a flow-through mode of operation. The flow through the stopcock is controlled by axially turning the valve stem within the valve body, thus making the stopcock streamline in operation. A dead stop combination is provided for assuring an open and closed state of the stopcock. In addition, the valve stem and body can be marked to assist the user in aligning the exit port and smaller conduit.
    Type: Grant
    Filed: March 14, 1991
    Date of Patent: January 12, 1993
    Inventor: Joseph E. Levasseur
  • Patent number: 4593717
    Abstract: The disclosure relates to a four-way valve, incorporating a fail-safe pivotal valve stem, a finger knob indicating simultaneously both closed and opened ports, and three connector fittings oriented in a Y configuration about the centrally located valve stem body for connection with various types of tubing or catheters. A number of channels bored into the valve stem are oriented to connect various ports within the valve housing in a number of combinations depending on the valve stem position. Detent means are provided to lock the valve stem in a selected position and prevent inadvertent opening or closing of a selected port or ports.
    Type: Grant
    Filed: August 12, 1983
    Date of Patent: June 10, 1986
    Inventor: Joseph E. Levasseur
  • Patent number: 4125276
    Abstract: A stabilizer apparatus to prevent excessive vibration in leaf spring type front wheel assemblies of four-wheel drive vehicles, including a stabilizer shaft, means for mounting the stabilizer shaft on the chassis of the vehicle in a position generally parallel to the pivot axis of the leaf spring, a stabilizer coupling having a first bearing rotatably supported on the stabilizer shaft for rotation about an axis transverse of the chassis, and a second bearing fixed to the first bearing, rotatably supported on a pivot axis of the leaf spring and having an axis of rotation spaced apart and generally parallel to the axis of the first bearing.
    Type: Grant
    Filed: November 23, 1977
    Date of Patent: November 14, 1978
    Inventor: Joseph E. Levasseur