Patents by Inventor Mark Donald Schaefer

Mark Donald Schaefer 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).

  • Publication number: 20240009509
    Abstract: A treadmill includes a running belt rotatable in a direction of motion and including a plurality of slats. At least one slat in the plurality of slats includes a top portion, a longitudinal rib extending away from the top portion and oriented along a longitudinal direction of the slat, and a bottom flange coupled to the longitudinal rib at or near a vertical bottom of the longitudinal rib such that the longitudinal rib is substantially positioned between the top portion and the bottom flange. The bottom flange extends away from the longitudinal rib on opposing sides of the longitudinal rib.
    Type: Application
    Filed: September 21, 2023
    Publication date: January 11, 2024
    Applicant: Woodway USA, Inc.
    Inventors: Douglas G. Bayerlein, Jose D. Bernal-Ramirez, James S. Marschalek, Mark Donald Schaefer
  • Patent number: 11217123
    Abstract: A device according to the present invention provides for an improved display card holder assembly and methods of operation. Wherein the improved assembly provides for a sleeve, collar and holder in removable communication to increase stability and reduce vibration of the card holder assembly. The assembly providing for a first embodiment comprising a holder comprising a button mechanism and nodes, and a sleeve comprising tabs and extensions, for increased stability. The assembly providing for a second embodiment comprising a holder comprising a lever mechanism, and at least one of an over-mold and assembled sleeve/collar combination, for increased stability. The assembly providing for a third embodiment comprising a holder comprising a hinge mechanism for increased stability. The invention further providing for methods of operation of the embodiments.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: January 4, 2022
    Assignee: RANDALL MARKETING INTERNATIONAL INC.
    Inventors: M. Randall Pasternak, Mark Donald Schaefer
  • Publication number: 20210043118
    Abstract: A device according to the present invention provides for an improved display card holder assembly and methods of operation. Wherein the improved assembly provides for a sleeve, collar and holder in removable communication to increase stability and reduce vibration of the card holder assembly. The assembly providing for a first embodiment comprising a holder comprising a button mechanism and nodes, and a sleeve comprising tabs and extensions, for increased stability. The assembly providing for a second embodiment comprising a holder comprising a lever mechanism, and at least one of an over-mold and assembled sleeve/collar combination, for increased stability. The assembly providing for a third embodiment comprising a holder comprising a hinge mechanism for increased stability. The invention further providing for methods of operation of the embodiments.
    Type: Application
    Filed: July 28, 2020
    Publication date: February 11, 2021
    Applicant: Randall Marketing International Inc.
    Inventors: M. Randall Pasternak, Mark Donald Schaefer
  • Publication number: 20040255895
    Abstract: A four-stroke internal combustion engine is provided that is capable of use in many power tools, including those power tools subjected to tippable applications. There is provided within an engine housing, an oil reservoir and a valve chamber which independently communicate with a crank chamber. A system of strategically placed dividers and passageways within the engine housing appropriately directs lubricant within the engine housing so that the internal cavity of the engine is lubricated during use in any operational attitude, and so that the lubricant flows to and is held in the proper chambers during storage. There is also provided a breather arrangement for an internal combustion engine which includes a camshaft having a hollow passageway in communication with a crank chamber.
    Type: Application
    Filed: July 21, 2004
    Publication date: December 23, 2004
    Inventors: Nicholas Robert Hirsch, Mark Donald Schaefer, Michael Paul Braun, Peter Hotz, Darrell Albert Wiatrowski, Ronald Lee Bartelt, Brian Hubbard
  • Patent number: 6810849
    Abstract: A four-stroke internal combustion engine is provided that is capable of use in many power tools, including those power tools subjected to tippable applications. There is provided within an engine housing an oil reservoir and a valve chamber which independently communicate with a crank chamber. A strategically placed divider and passageway, located within the engine housing, appropriately direct lubricant within the engine housing so that the internal cavity of the engine is lubricated during use in various operating attitudes, and so that the fluid flows to and is held in the proper chambers of the engine housing during storage. There is also provided a breather arrangement for an internal combustion engine which includes a cam shaft having a hollow passageway in communication with the crank chamber and the air intake system of the engine.
    Type: Grant
    Filed: June 7, 2001
    Date of Patent: November 2, 2004
    Assignee: Briggs & Stratton Corporation
    Inventors: Nicholas Robert Hirsch, Mark Donald Schaefer, Michael Paul Braun, Peter Hotz, Darrell Albert Wiatrowski, Ronald Lee Bartelt, Brian Hubbard