Patents by Inventor David S. Pearl, II

David S. Pearl, II 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).

  • Fluid line coupling with self-adjusting valve depressor for refrigeration refrigerant testing and charging hoses
    Patent number: 4328948
    Abstract: A coupling for joining two fluid line members where one fluid line has an inflation valve and the other fluid line has a resilient material tubular sleeve with an axially self-adjusting splined valve depressor, for the inflation valve, tightly and securely positioned therein during fluid flow communication.
    Type: Grant
    Filed: February 25, 1980
    Date of Patent: May 11, 1982
    Assignee: Uniweld Products, Incorporated
    Inventor: David S. Pearl, II