Patents by Inventor David Allen Letchworth

David Allen Letchworth 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).

  • ALIGNMENT SPACER ASSEMBLIES FOR WELDING AND METHODS FOR USING SAME
    Publication number: 20230201978
    Abstract: A spacer assembly and method for using same to fix a first component to a second component are provided. The method includes positioning the first and second spacer segments between the first and second components, the first and second spacer segments each including an inner face, an opposite outer face, and an exterior surface extending along a longitudinal axis between the inner face and the outer face. The exterior surfaces of the first and second spacer segments are coaxially aligned and secured by a securing device such that the inner faces of the first and second spacer segments define supplementary non-perpendicular angles relative to the longitudinal axis and the outer faces of the first and second spacer segments are parallel to one another. The securing device and the first and second spacer segments are removed after the first component is mechanically coupled to the second component.
    Type: Application
    Filed: February 17, 2023
    Publication date: June 29, 2023
    Applicant: CROWN EQUIPMENT CORPORATION
    Inventors: Jordan Aloys Rammel, David Allen Letchworth
  • Alignment spacer assemblies for welding and methods for using same
    Patent number: 11607754
    Abstract: A spacer assembly and method for using same to fix a first component to a second component are provided. The method includes positioning the first and second spacer segments between the first and second components, the first and second spacer segments each including an inner face, an opposite outer face, and an exterior surface extending along a longitudinal axis between the inner face and the outer face. The exterior surfaces of the first and second spacer segments are coaxially aligned and secured by a securing device such that the inner faces of the first and second spacer segments define supplementary non-perpendicular angles relative to the longitudinal axis and the outer faces of the first and second spacer segments are parallel to one another. The securing device and the first and second spacer segments are removed after the first component is mechanically coupled to the second component.
    Type: Grant
    Filed: November 5, 2020
    Date of Patent: March 21, 2023
    Assignee: Crown Equipment Corporation
    Inventors: Jordan Aloys Rammel, David Allen Letchworth
  • ALIGNMENT SPACER ASSEMBLIES FOR WELDING AND METHODS FOR USING SAME
    Publication number: 20220016735
    Abstract: A spacer assembly and method for using same to fix a first component to a second component are provided. The method includes positioning the first and second spacer segments between the first and second components, the first and second spacer segments each including an inner face, an opposite outer face, and an exterior surface extending along a longitudinal axis between the inner face and the outer face. The exterior surfaces of the first and second spacer segments are coaxially aligned and secured by a securing device such that the inner faces of the first and second spacer segments define supplementary non-perpendicular angles relative to the longitudinal axis and the outer faces of the first and second spacer segments are parallel to one another. The securing device and the first and second spacer segments are removed after the first component is mechanically coupled to the second component.
    Type: Application
    Filed: November 5, 2020
    Publication date: January 20, 2022
    Applicant: Crown Equipment Corporation
    Inventors: Jordan Aloys Rammel, David Allen Letchworth
  • Adjustable eccentric axle caster assembly for pallet truck
    Patent number: 6904641
    Abstract: An adjustable eccentric axle caster assembly for a pallet truck is provided. The adjustable caster assembly includes an eccentric axle, a caster wheel mounted on the eccentric axle, and a fastener for securing the eccentric axle to provide a desired caster wheel position. Additionally, a method of adjusting the eccentric axle caster assembly is provided.
    Type: Grant
    Filed: March 18, 2003
    Date of Patent: June 14, 2005
    Assignee: Crown Equipment Corporation
    Inventors: Daniel Carl Magoto, David Allen Letchworth
  • Adjustable eccentric axle caster assembly for pallet truck
    Publication number: 20040181901
    Abstract: An adjustable eccentric axle caster assembly for a pallet truck is provided. The adjustable caster assembly includes an eccentric axle, a caster wheel mounted on the eccentric axle, and a fastener for securing the eccentric axle to provide a desired caster wheel position. Additionally, a method of adjusting the eccentric axle caster assembly is provided.
    Type: Application
    Filed: March 18, 2003
    Publication date: September 23, 2004
    Inventors: Daniel Carl Magoto, David Allen Letchworth