Patents by Inventor Ronald L. Strnad

Ronald L. Strnad 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).

  • Air cleaner liquid drain and filter assembly
    Patent number: 4735640
    Abstract: An air cleaner has a casing having an air inlet and an air outlet with an air filter therebetween. A sump with a drain hole is formed in the casing between the filter and outlet. A valve opens the drain hole to drain the sump in response to the collection of a predetermined amount of liquid thereabove in the sump collected from air passing from the filter to the outlet. And an air filter filters any air passing through the drain hole from outside the casing should the valve open while air is passing from the normal inlet to the outlet.
    Type: Grant
    Filed: June 8, 1987
    Date of Patent: April 5, 1988
    Assignee: General Motors Corporation
    Inventors: William F. Thornburgh, Ronald L. Strnad
  • Air filter assembly
    Patent number: 4133661
    Abstract: The drawings illustrate an air filter assembly which is assembled from a pair of identical box-like housing halves. Equally spaced rib elements are formed in each half such that, upon assembly, the rib elements are interdigitated to provide a space for confining therebetween a pleated filtering sheet having a large filtering area.
    Type: Grant
    Filed: November 25, 1977
    Date of Patent: January 9, 1979
    Assignee: General Motors Corporation
    Inventor: Ronald L. Strnad