Patents by Inventor Gerrit Jan Lammers

Gerrit Jan Lammers 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: 20230414990
    Abstract: The invention relates to an exercise device, comprising a frame, a resistance system; and an engagement element, the engagement element being connected to the resistance system using a first line end and a second line end, wherein the resistance system is configured to provide the resistance to extension of the first line end independently from the resistance to extension of the second line end. The invention also relates to an exercise system comprising two exercise devices according to any one or more of the preceding claims.
    Type: Application
    Filed: November 9, 2021
    Publication date: December 28, 2023
    Inventors: Gerrit Jan Lammers, Matthias Weiss, Kris Brian Humbarger
  • Patent number: 11794067
    Abstract: Exercise device, having at least one elongate track onto which a seat and a footrest are slidingly movably arranged, such that the seat and the footrest are mutually independently movable along the at least one track, a resistance element connected to a handle via a drive cord through which the resistance element can be driven upon pulling the handle towards the seat, and a cord guiding member arranged between the handle and the resistance element over which the drive cord passes, wherein the cord guiding member is arranged stationary with respect to the footrest, and wherein the resistance element is arranged stationary with respect to the at least one track.
    Type: Grant
    Filed: November 11, 2021
    Date of Patent: October 24, 2023
    Inventor: Gerrit Jan Lammers
  • Publication number: 20220143456
    Abstract: Exercise device, having at least one elongate track onto which a seat and a footrest are slidingly movably arranged, such that the seat and the footrest are mutually independently movable along the at least one track, a resistance element connected to a handle via a drive cord through which the resistance element can be driven upon pulling the handle towards the seat, and a cord guiding member arranged between the handle and the resistance element over which the drive cord passes, wherein the cord guiding member is arranged stationary with respect to the footrest, and wherein the resistance element is arranged stationary with respect to the at least one track.
    Type: Application
    Filed: November 11, 2021
    Publication date: May 12, 2022
    Inventor: Gerrit Jan Lammers
  • Patent number: 10729933
    Abstract: An exercise device is disclosed including a first elongated structural member extending in a longitudinal direction. A resistance element is connected to the first elongated structural member, the resistance element providing a resistance force. A seat is connected to the first structural member, the seat includes a seating surface. A drive which drives the resistance element includes a handle to be held by a user. The seat and resistance element are moveable with respect to each other in a direction parallel to the longitudinal direction and a centroid of the resistance element is arranged lower than an upper edge of the first elongated structural member.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: August 4, 2020
    Assignee: RP3 Rowing B.V.
    Inventor: Gerrit Jan Lammers
  • Publication number: 20180214734
    Abstract: An exercise device is disclosed including a first elongated structural member extending in a longitudinal direction. A resistance element is connected to the first elongated structural member, the resistance element providing a resistance force. A seat is connected to the first structural member, the seat includes a seating surface. A drive which drives the resistance element includes a handle to be held by a user. The seat and resistance element are moveable with respect to each other in a direction parallel to the longitudinal direction and a centroid of the resistance element is arranged lower than an upper edge of the first elongated structural member.
    Type: Application
    Filed: January 31, 2018
    Publication date: August 2, 2018
    Inventor: Gerrit Jan Lammers