Patents by Inventor Edward R. Promin

Edward R. Promin 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: 6189857
    Abstract: A fluid-actuated squeeze valve is provided for use where leak-tight operation and/or very rapid valve closure characteristics are required. The valve comprises an annular valve body with a generally cylindrical open-ended bore for receiving the frusto-conical end portions of two, axially aligned, opposed end plugs. An annular clearance is provided between the end portions and the bore wall for receiving an elastomeric sleeve. Each end plug is provided with an axially extending bore for passage of process fluid which communicates with angled passageways extending from the bore to the slant surface of a respective frusto-conical end portion. The smaller truncated end surfaces of the two opposed end portions are spaced apart axially to define a narrow gap therebetween. Fluid pressure is exerted through an access port in the valve body to actuate the valve by causing the elastomeric sleeve to press against the end portions. Means for operating the valve in response to system pressure parameters are described.
    Type: Grant
    Filed: April 13, 1971
    Date of Patent: February 20, 2001
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Leroy Zeger, Edward R. Promin