Patents by Inventor Timothy G. La Rocque

Timothy G. La Rocque 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).

  • Hopper and filter chamber for direct forward throw sweeper
    Patent number: 5303448
    Abstract: In a direct forward throw sweeper, improvements related to a door for closing the opening into the hopper permit backing away from a debris receptacle with the hopper door open after dumping a load of debris without damage to the machine. An attachment part is provided for connecting a vacuum pickup wand to the debris hopper. Associated improvements to a related air filter chamber provide improved dust control while dumping the hopper and convenient access for servicing a dust accumulation space in the bottom of the filter chamber.
    Type: Grant
    Filed: July 8, 1992
    Date of Patent: April 19, 1994
    Assignee: Tennant Company
    Inventors: Robert D. Hennessey, Timothy G. La Rocque