Patents by Inventor Clark, James L.

Clark, James L. 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).

  • Anti-reflux valve
    Patent number: 3968925
    Abstract: An anti-reflux valve mounted at the inlet port to the fluid collection chamber of a fluid collection bag and having a thin flexible valve element which is retained for limited floating movement over the inlet port and which flexes to permit flow of fluid into the collection chamber and which is moved against a valve seat surface surrounding the inlet port in response to fluid pressure inside of the collection chamber to thus prevent reflux of such fluid.
    Type: Grant
    Filed: May 12, 1975
    Date of Patent: July 13, 1976
    Assignee: Plastronics, Inc.
    Inventors: Ray H. Johnston, Bryon L. Mather, Clark, James L.