Patents by Inventor Bart Marcus Shafer

Bart Marcus Shafer 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).

  • Self-aligning door bogie
    Patent number: 11598133
    Abstract: A door roller includes a carriage member comprising a plurality of bores, and a plurality of roller assemblies connected to the carriage member, each roller assembly of the plurality of roller assemblies including a pivot bearing rotatably disposed within a bore of the plurality of bores and a pair of rollers coupled to the pivot bearing. Each wheel assembly is configured to pivot relative to the carriage member.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: March 7, 2023
    Assignee: Textron Innovations Inc.
    Inventors: Bruce Bennett Bacon, Bart Marcus Shafer
  • SELF-ALIGNING DOOR BOGIE
    Publication number: 20210262264
    Abstract: A door roller includes a carriage member comprising a plurality of bores, and a plurality of roller assemblies connected to the carriage member, each roller assembly of the plurality of roller assemblies including a pivot bearing rotatably disposed within a bore of the plurality of bores and a pair of rollers coupled to the pivot bearing. Each wheel assembly is configured to pivot relative to the carriage member.
    Type: Application
    Filed: February 20, 2020
    Publication date: August 26, 2021
    Applicant: Bell Textron Inc.
    Inventors: Bruce Bennett BACON, Bart Marcus SHAFER
  • Engine mount assemblies for aircraft
    Patent number: 10384790
    Abstract: An engine mount assembly for coupling an engine to an airframe includes a torsion bar, a lateral movement control assembly and a vertical movement control assembly. The torsion bar has a torsional stiffness and is coupled between the engine and the airframe such that torsional movement of the engine causes torsion in the torsion bar. The lateral movement control assembly has a lateral stiffness and is coupled between the torsion bar and the airframe such that lateral movement of the engine causes rotation of the torsion bar which reacts on lateral movement control assembly. The vertical movement control assembly has a vertical stiffness and is coupled between the engine and the airframe such that vertical movement of the engine reacts on the vertical movement control assembly. The engine mount assembly, thereby enables torsional, lateral and vertical movement of the engine to be independently controlled.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: August 20, 2019
    Assignee: Bell Textron Inc.
    Inventors: Tyler Wayne Baldwin, John Elton Brunken, Jr., Matthew Carl VanBuskirk, Bart Marcus Shafer, Bruce Bennett Bacon
  • Engine Mount Assemblies for Aircraft
    Publication number: 20170217595
    Abstract: An engine mount assembly for coupling an engine to an airframe includes a torsion bar, a lateral movement control assembly and a vertical movement control assembly. The torsion bar has a torsional stiffness and is coupled between the engine and the airframe such that torsional movement of the engine causes torsion in the torsion bar. The lateral movement control assembly has a lateral stiffness and is coupled between the torsion bar and the airframe such that lateral movement of the engine causes rotation of the torsion bar which reacts on lateral movement control assembly. The vertical movement control assembly has a vertical stiffness and is coupled between the engine and the airframe such that vertical movement of the engine reacts on the vertical movement control assembly. The engine mount assembly, thereby enables torsional, lateral and vertical movement of the engine to be independently controlled.
    Type: Application
    Filed: January 19, 2017
    Publication date: August 3, 2017
    Applicant: Bell Helicopter Textron Inc.
    Inventors: Tyler Wayne Baldwin, John Elton Brunken, JR., Matthew Carl VanBuskirk, Bart Marcus Shafer, Bruce Bennett Bacon