Patents by Inventor Randolph Schemkes

Randolph Schemkes 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: 20220281580
    Abstract: A plug door assembly for a pressurized aircraft is provided. The door assembly includes a surround and a door, and connector assemblies along the edges that act to transfer in-place stresses directly across the fuselage opening via the door, as well as stops that react redial loads generated by cabin pressure. The door assembly obviates the need for a separate frame to transmit stresses around the perimeter of the fuselage opening.
    Type: Application
    Filed: May 23, 2022
    Publication date: September 8, 2022
    Inventors: James M. Curry, Randolph Schemkes
  • Patent number: 11338900
    Abstract: A plug door assembly for a pressurized aircraft is provided. The door assembly includes a surround and a door, and connector assemblies along the edges that act to transfer in-plane stresses directly across the fuselage opening via the door, as well as stops that react radial loads generated by cabin pressure. The door assembly obviates the need for a separate frame to transmit stresses around the perimeter of the fuselage opening.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: May 24, 2022
    Inventors: James M. Curry, Randolph Schemkes
  • Publication number: 20180304982
    Abstract: A plug door assembly for a pressurized aircraft is provided. The door assembly includes a surround and a door, and connector assemblies along the edges that act to transfer in-plane stresses directly across the fuselage opening via the door, as well as stops that react radial loads generated by cabin pressure. The door assembly obviates the need for a separate frame to transmit stresses around the perimeter of the fuselage opening.
    Type: Application
    Filed: April 23, 2018
    Publication date: October 25, 2018
    Inventors: James M. Curry, Randolph Schemkes
  • Patent number: 8979025
    Abstract: Apparatus for transferring cargo between upper and lower decks of an aircraft. A lift platform receivable in a through opening in the upper deck is raised and lowered by a mechanism using a cable and linear actuator, such as a ball screw. The entirety of the mechanism may be housed in a structure that forms a divider within the aircraft, such as a horizontal deck, vertical bulkhead, or the lift platform itself, thus saving valuable interior volume of the aircraft. Also provided is a recess formed in the lower deck that receives the lift platform. A translating floor assembly mounted in the recess includes transversely extending deck segments that are displaceable between a raised configuration level with the lower deck, and a lowered configuration that clears the recess to receive the lift platform. Installed tracks guide the deck segments between the raised and lowered configurations.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: March 17, 2015
    Inventors: James M. Curry, Randolph Schemkes
  • Patent number: 8702036
    Abstract: A cargo storage and handling system for aircraft. A rack assembly mounts in an upper portion of the fuselage to form a cargo area in the upper lobe thereof. The rack includes a series of frames that are suspended from pre-existing attachment points for luggage bins. Cargo rails mounted on the frames support containers for movement through the upper lobe cargo area. Cargo may be raised to the upper lobe cargo area from the main deck of the aircraft using a lift apparatus. The lift apparatus includes a platform that is raised/lowered by a lift mechanism, the lift mechanism being mounted to/or enclosed within a barrier between the cargo and personnel areas of the aircraft, such as a 9G Barrier. A cover apparatus closes a cargo hole in the main deck of the aircraft for personnel safety.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: April 22, 2014
    Inventors: James M. Curry, Randolph Schemkes
  • Publication number: 20120160961
    Abstract: A cargo storage and handling system for aircraft. A rack assembly mounts in an upper portion of the fuselage to form a cargo area in the upper lobe thereof. The rack includes a series of frames that are suspended from pre-existing attachment points for luggage bins. Cargo rails mounted on the frames support containers for movement through the upper lobe cargo area. Cargo may be raised to the upper lobe cargo area from the main deck of the aircraft using a lift apparatus. The lift apparatus includes a platform that is raised/lowered by a lift mechanism, the lift mechanism being mounted to/or enclosed within a barrier between the cargo and personnel areas of the aircraft, such as a 9G Barrier. A cover apparatus closes a cargo hole in the main deck of the aircraft for personnel safety.
    Type: Application
    Filed: October 18, 2011
    Publication date: June 28, 2012
    Inventors: James M. Curry, Randolph Schemkes
  • Publication number: 20120126056
    Abstract: An apparatus for transferring cargo between an upper, passenger deck and a lower, cargo deck of an aircraft. A lift platform raises palletized cargo from the lower deck through an opening formed in the upper deck. The drive mechanism is housed entirely within the lift platform itself. The platform is stabilized by flanking, scissors-action leg assemblies, that nest alongside the platform when stowed. The platform is stowed in the raised position, within the opening formed in the upper deck. Locking assemblies attach the lift platform to the sides of the opening so that the platform becomes a load-bearing structural component of the upper deck when stowed. A recess is formed in the lower deck for receiving the lift platform when lowered. A translating floor assembly having folding floor sections lowers to clear the recess, and then raises to define a floor surface over the opening when the lift platform is not in use.
    Type: Application
    Filed: September 6, 2011
    Publication date: May 24, 2012
    Inventors: James M. Curry, Randolph Schemkes
  • Patent number: 8011617
    Abstract: An apparatus for transferring cargo between an upper, passenger deck and a lower, cargo deck of an aircraft. A lift platform raises palletized cargo from the lower deck through an opening formed in the upper deck. The drive mechanism is housed entirely within the lift platform itself. The platform is stabilized by flanking, scissors-action leg assemblies, that nest alongside the platform when stowed. The platform is stowed in the raised position, within the opening formed in the upper deck. Locking assemblies attach the lift platform to the sides of the opening so that the platform becomes a load-bearing structural component of the upper deck when stowed. A recess is formed in the lower deck for receiving the lift platform when lowered. A translating floor assembly having folding floor sections lowers to clear the recess, and then raises to define a floor surface over the opening when the lift platform is not in use.
    Type: Grant
    Filed: December 7, 2005
    Date of Patent: September 6, 2011
    Inventors: James M. Curry, Randolph Schemkes
  • Publication number: 20110068225
    Abstract: An apparatus for transferring cargo between an upper, passenger deck and a lower, cargo deck of an aircraft. A lift platform raises palletized cargo from the lower deck through an opening formed in the upper deck. The drive mechanism is housed entirely within the lift platform itself. The platform is stabilized by flanking, scissors-action leg assemblies, that nest alongside the platform when stowed. The platform is stowed in the raised position, within the opening formed in the upper deck. Locking assemblies attach the lift platform to the sides of the opening so that the platform becomes a load-bearing structural component of the upper deck when stowed. A recess is formed in the lower deck for receiving the lift platform when lowered. A translating floor assembly having folding floor sections lowers to clear the recess, and then raises to define a floor surface over the opening when the lift platform is not in use.
    Type: Application
    Filed: December 7, 2005
    Publication date: March 24, 2011
    Inventors: James M. Curry, Randolph Schemkes