Patents by Inventor Jaime E. Ruiz

Jaime E. Ruiz 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).

  • Hydraulic cylinder sealing arrangement
    Patent number: 12209667
    Abstract: A combination of seals and wear guides for use in a hydraulic cylinder provides a sealed engagement between a piston rod of the hydraulic cylinder and an inner circumferential surface of a rod end of a cylinder barrel of the hydraulic cylinder through which the piston rod is axially movable. The combination includes a cylindrical metallic wear guide for seating within a first annular groove formed around the inner circumferential surface, a buffer seal assembly including an annular buffer seal cooperatively mated with an annular backup ring for seating within a second annular groove, a U-cup seal for seating within a third annular groove, a cylindrical plastic wear guide for seating within a fourth annular groove, and a triple lip wiper seal including three ringed lip portions for seating within a fifth annular groove.
    Type: Grant
    Filed: May 10, 2022
    Date of Patent: January 28, 2025
    Assignee: CATERPILLAR INC.
    Inventors: Ananda Sudhakar Ponnusamy, Rameshkrishnan Lakshminarayanan, Justin Douglas Speichinger, Cody Patrick Renshaw, Jaime E. Ruiz
  • HYDRAULIC CYLINDER SEALING ARRANGEMENT
    Publication number: 20230366466
    Abstract: A combination of seals and wear guides for use in a hydraulic cylinder provides a sealed engagement between a piston rod of the hydraulic cylinder and an inner circumferential surface of a rod end of a cylinder barrel of the hydraulic cylinder through which the piston rod is axially movable. The combination includes a cylindrical metallic wear guide for seating within a first annular groove formed around the inner circumferential surface, a buffer seal assembly including an annular buffer seal cooperatively mated with an annular backup ring for seating within a second annular groove, a U-cup seal for seating within a third annular groove, a cylindrical plastic wear guide for seating within a fourth annular groove, and a triple lip wiper seal including three ringed lip portions for seating within a fifth annular groove.
    Type: Application
    Filed: May 10, 2022
    Publication date: November 16, 2023
    Applicant: CATERPILLAR INC.
    Inventors: Ananda Sudhakar Ponnusamy, Rameshkrishnan Lakshminarayanan, Justin Douglas Speichinger, Cody Patrick Renshaw, Jaime E. Ruiz
  • Hydraulic cylinder
    Patent number: D1068854
    Type: Grant
    Filed: May 10, 2022
    Date of Patent: April 1, 2025
    Assignee: CATERPILLAR INC.
    Inventors: Ananda Sudhakar Ponnusamy, Rameshkrishnan Lakshminarayanan, Justin Douglas Speichinger, Cody P. Renshaw, Jaime E. Ruiz