Patents by Inventor Michael V. Shepherd

Michael V. Shepherd 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 valve for emptying a cylinder
    Patent number: 4850388
    Abstract: A double valve for dispensing from or emptying a cylinder independently of internal cylinder pressure includes a first and second spring loaded toggle valve, an input port, an output port, a dip tube, and first and second monitoring ports to facilitate monitoring of pressure within and without the cylinder. A source of pressurized inert gas is connected to the input port, volatilizing the contents of the cylinder and expelling them through the output port. Communication between the input port and output port is controlled by the first and second spring loaded toggle valves.
    Type: Grant
    Filed: September 19, 1988
    Date of Patent: July 25, 1989
    Assignee: Accurate Gas Control Systems, Inc.
    Inventor: Michael V. Shepherd