Patents by Inventor James L. Cronk

James L. Cronk 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).

  • Automatically released air inlet filter
    Patent number: 5254033
    Abstract: In an automotive heating and/or cooling system, an air inlet leads to plenum which contains a filter held horizontally by a hinge at one side and by a spring latch at the other side to filter the incoming air flow. The spring latch has a limited holding force so that if the filter becomes clogged the force of the air flow through the filter is sufficient to overcome the spring latch and the filter will swing open to a bypass position. The incoming air will then enter the system without filtering.
    Type: Grant
    Filed: September 1, 1992
    Date of Patent: October 19, 1993
    Assignee: General Motors Corporation
    Inventors: Steven M. Brauen, James L. Cronk