Patents by Inventor Elizabeth A. Rinehold

Elizabeth A. Rinehold 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).

  • Folding leaf valve and method of making
    Patent number: 4930535
    Abstract: A leaf valve folds upon itself to provide positive sealing of a pressurized chamber under a variety of pressure conditions. In particular, the valve stem folds to effectively close the lumen and provide a positive seal even at low differential pressure. A method of making the valve is descirbed.
    Type: Grant
    Filed: June 23, 1989
    Date of Patent: June 5, 1990
    Assignee: McGhan Medical Corporation
    Inventor: Elizabeth A. Rinehold