Patents by Inventor Randal R. Drennan

Randal R. Drennan 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).

  • Storage hopper for inclined cleaner
    Patent number: 5787551
    Abstract: A storage hopper is placed upstream of an inclined cleaner to prevent a surge of cotton from choking down the inclined cleaner. The output of the storage hopper is limited by feed rollers.
    Type: Grant
    Filed: April 11, 1997
    Date of Patent: August 4, 1998
    Assignee: Cotton Machinery, Inc.
    Inventor: Randal R. Drennan