Patents by Inventor Semor David Tofte

Semor David Tofte 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).

  • Patent number: 9604351
    Abstract: An oil filter removal and drain system including an oil-filter-removal assembly and a drain-attachment assembly in functional combination. The oil-filter-removal assembly includes a top-frame, a bottom-frame, a geared-socket-hub, a filter-socket, a plurality of geared-clamp-jaws, a filter-gasket, and a toggle-clamp in functional and structural combination. The drain-attachment assembly includes a drain-attachment-body, a drain-toggle-clamp, a drain-nipple, and a filter-cutter. The drain-attachment assembly is removably affixable to the oil-filter-removal assembly via the plurality keyhole-stud-receivers of the drain-attachment assembly accepting and retaining the plurality of keyhole-studs of the oil-filter-removal assembly. An oil-filter-removal assembly may be used on many different types of fluid filters (e.g., hydraulic fluid, diesel fuel, engine oil, etc.).
    Type: Grant
    Filed: September 4, 2016
    Date of Patent: March 28, 2017
    Inventor: Semor David Tofte
  • Publication number: 20170066114
    Abstract: An oil filter removal and drain system including an oil-filter-removal assembly and a drain-attachment assembly in functional combination. The oil-filter-removal assembly includes a top-frame, a bottom-frame, a geared-socket-hub, a filter-socket, a plurality of geared-clamp-jaws, a filter-gasket, and a toggle-clamp in functional and structural combination. The drain-attachment assembly includes a drain-attachment-body, a drain-toggle-clamp, a drain-nipple, and a filter-cutter. The drain-attachment assembly is removably affixable to the oil-filter-removal assembly via the plurality keyhole-stud-receivers of the drain-attachment assembly accepting and retaining the plurality of keyhole-studs of the oil-filter-removal assembly. An oil-filter-removal assembly may be used on many different types of fluid filters (e.g., hydraulic fluid, diesel fuel, engine oil, etc.).
    Type: Application
    Filed: September 4, 2016
    Publication date: March 9, 2017
    Inventor: SEMOR DAVID TOFTE
  • Patent number: 5915668
    Abstract: A valve actuating apparatus is provided for operating a valve between an open and closed position. The valve actuating apparatus includes an actuator having an output member with the actuator providing reciprocating motion to the output member upon energization of the actuator. A guide member having a detent therein is connected to the output member of the actuator. The apparatus includes a clutch assembly having a housing, an electromagnet assembly, an engagement member, and a housing opening with the engagement member disposed in the housing between the electromagnet assembly, and the housing opening. The housing opening is adapted to receive the guide member therein such that the clutch assembly and a portion of the guide member are slidably connected. The electromagnet assembly is selectively energized to force the engagement member against the guide member disposed in the housing opening.
    Type: Grant
    Filed: March 6, 1998
    Date of Patent: June 29, 1999
    Assignee: Micro-Trak Systems, Inc.
    Inventors: Gary Dennis Hodapp, Semor David Tofte