Patents by Inventor Thomas Peter Mathews

Thomas Peter Mathews 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).

  • Float switch with protective boot
    Patent number: 6870110
    Abstract: Disclosed herein is a fluid level float switch and protective boot therefore. The boot is adapted to engage a detent portion of the float switch in a secure watertight fashion. The boot is adapted to flexibly accommodate movement of the float within the boot in response to changes in the liquid level in the reservoir in one embodiment or to engage contacts in another. The boot has a wall engaging portion for providing watertight engagement with an interior wall of the reservoir. The boot has an accordion shaped stem portion to facilitate insertion of the float switch into the boot and to flexibly accommodate movement of the float within the boot in one embodiment, or a rigid portion attached to the flexible portion in another embodiment.
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: March 22, 2005
    Assignee: Tennant Company
    Inventors: Charles J. Sorbo, David P. Curry, James B. Dockendorff, Thomas Peter Mathews
  • Float switch with protective boot
    Publication number: 20040233063
    Abstract: Disclosed herein is a fluid level float switch and protective boot therefore. The boot is adapted to engage a detent portion of the float switch in a secure watertight fashion. The boot is adapted to flexibly accommodate movement of the float within the boot in response to changes in the liquid level in the reservoir in one embodiment or to engage contacts in another. The boot has a wall engaging portion for providing watertight engagement with an interior wall of the reservoir. The boot has an accordion shaped stem portion to facilitate insertion of the float switch into the boot and to flexibly accommodate movement of the float within the boot in one embodiment, or a rigid portion attached to the flexible portion in another embodiment.
    Type: Application
    Filed: February 18, 2004
    Publication date: November 25, 2004
    Applicant: Tennant Company
    Inventors: Charles J. Sorbo, David P. Curry, James B. Dockendorff, Thomas Peter Mathews