Patents by Inventor Mark N. Holtan

Mark N. Holtan 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: 20100273612
    Abstract: The present invention is a seat height adjustment mechanism for exercise equipment having a seat. Examples of such exercise equipment include: stationary exercise bicycles; road or mountain type bicycles; resistance strength training supporting racks or platforms (e.g., preacher curl benches, military or shoulder press racks, etc.) for use with free weights; and resistance strength training machines that employ as resistance weight plates, deflectable members, elastic bands, springs, hydraulic cylinders, pneumatic cylinders, etc. The mechanism comprises a member, a telescopic member, and an engagement member. The member extends upwardly and includes a rack. The telescopic member includes a first end telescopically received in the member and a seat end. The engagement member is coupled to the telescopic member and adapted to engage the rack.
    Type: Application
    Filed: May 3, 2010
    Publication date: October 28, 2010
    Applicant: Nautilus, Inc.
    Inventors: Jonathan B. Watt, Jonathan Harrach-Salazar, Mark N. Holtan
  • Patent number: 7708251
    Abstract: The present invention is a seat height adjustment mechanism for exercise equipment having a seat. Examples of such exercise equipment include: stationary exercise bicycles; road or mountain type bicycles; resistance strength training supporting racks or platforms (e.g., preacher curl benches, military or shoulder press racks, etc.) for use with free weights; and resistance strength training machines that employ as resistance weight plates, deflectable members, elastic bands, springs, hydraulic cylinders, pneumatic cylinders, etc. The mechanism comprises a member, a telescopic member, and an engagement member. The member extends upwardly and includes a rack. The telescopic member includes a first end telescopically received in the member and a seat end. The engagement member is coupled to the telescopic member and adapted to engage the rack.
    Type: Grant
    Filed: March 17, 2006
    Date of Patent: May 4, 2010
    Assignee: Nautilus, Inc.
    Inventors: Jonathan B. Watt, Jonathan Harrach-Salazar, Mark N. Holtan
  • Patent number: 7318431
    Abstract: A biomass pellet burning stove has a hopper storing biomass pellets which are transported from the hopper to a feeder tube with a rotating disc having slots for holding biomass pellets and allowing the biomass pellets to move from the slots into a feeder tube which directs the biomass pellets to a burn pot. The burn pot has first and second biomass burning chambers that separately burn biomass pellets by an efficient, environmental and economic compatible process.
    Type: Grant
    Filed: February 2, 2005
    Date of Patent: January 15, 2008
    Assignee: BixBy Energy Systems, Inc.
    Inventors: Mark N. Holtan, Ross C. Embertson