Patents by Inventor Thomas J. Botten

Thomas J. Botten 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 filter for electric motors
    Patent number: 5493160
    Abstract: The invention relates to a filter assembly for capturing particles in electric motor exhaust streams. That assembly comprises a filter of extended surface area, including filter material and a frame substantially wrapped by the filter material, and a securing means, preferably a C-shaped channel, for receiving the filter frame. In operation, the filter is slid into the channel and is held securely by the channel so that a positive seal is formed between the channel and the filter as an exhaust stream is passed through the filter.
    Type: Grant
    Filed: March 16, 1994
    Date of Patent: February 20, 1996
    Inventor: Thomas J. Botten