Patents by Inventor Dan Ruprecht

Dan Ruprecht 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).

  • Elevator door enforcer
    Patent number: 12753049
    Abstract: An elevator door enforcer may be used to enhance the safety of an elevator landing door. The device includes a pin, and a mechanical structure that affixes the pin securely to the elevator landing door. The pin is a protruding structure that may be positioned so that a portion of the pin protrudes from the affixation point, downwards past the bottom of the elevator landing door, and into a sill groove when the elevator door enforcer is in use.
    Type: Grant
    Filed: December 16, 2025
    Date of Patent: October 6, 2026
    Assignee: Ashby Elevator Safety Products, LLC
    Inventors: Daniel Killion, Patrick Killion, John Killion, Dan Ruprecht
  • ELEVATOR DOOR ENFORCER
    Publication number: 20260103362
    Abstract: An elevator door enforcer may be used to enhance the safety of an elevator landing door. The device includes a pin, and a mechanical structure that affixes the pin securely to the elevator landing door. The pin is a protruding structure that may be positioned so that a portion of the pin protrudes from the affixation point, downwards past the bottom of the elevator landing door, and into a sill groove when the elevator door enforcer is in use.
    Type: Application
    Filed: December 16, 2025
    Publication date: April 16, 2026
    Inventors: Daniel Killion, Patrick Killion, John Killion, Dan Ruprecht