Patents by Inventor David Groesbeck

David Groesbeck 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).

  • System for adjusting the counterbalance of an overhead door
    Patent number: 11441345
    Abstract: A counterbalance system for an overhead door is disclosed. The system includes a torsion adjustment comprising a first portion and a second portion, the first and second portions being rotatable relative to one another in a first direction and not in a second direction opposite the first direction. The system also includes an anchor fixed to the first portion, a collar fixed to the second portion, the collar being selectively fixable to a shaft of the overhead door, and a spring coupled between the collar and the anchor. The spring supports at least a portion of the weight of the overhead door as the overhead door is raised and lowered. Rotating the first portion of the torsion calibration collar relative to the second portion of the torsion calibration collar increases torsion in the spring and therefore calibrates the spring to support a desired amount of the weight of the overhead door.
    Type: Grant
    Filed: February 29, 2020
    Date of Patent: September 13, 2022
    Assignee: Hall Labs LLC
    Inventors: David R Hall, Michael Hall, Jerome Miles, David Groesbeck
  • SYSTEM FOR ADJUSTING THE COUNTERBALANCE OF AN OVERHEAD DOOR
    Publication number: 20210270067
    Abstract: A counterbalance system for an overhead door is disclosed. The system includes a torsion adjustment comprising a first portion and a second portion, the first and second portions being rotatable relative to one another in a first direction and not in a second direction opposite the first direction. The system also includes an anchor fixed to the first portion, a collar fixed to the second portion, the collar being selectively fixable to a shaft of the overhead door, and a spring coupled between the collar and the anchor. The spring supports at least a portion of the weight of the overhead door as the overhead door is raised and lowered. Rotating the first portion of the torsion calibration collar relative to the second portion of the torsion calibration collar increases torsion in the spring and therefore calibrates the spring to support a desired amount of the weight of the overhead door.
    Type: Application
    Filed: February 29, 2020
    Publication date: September 2, 2021
    Applicant: Hall Labs LLC
    Inventors: David R Hall, Michael Hall, Jerome Miles, David Groesbeck