Patents by Inventor Robert F. Ringness

Robert F. Ringness 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).

  • Weld joint hardbar main frame
    Patent number: 4220216
    Abstract: In a crawler vehicle (10), a support bar (25) to main frame (12) connection is provided which has adequate shear strength and flexibility. The support bar (25) is shaped (50) in line with the main frame beams (38,40) so that the main frame beams (38,40) seat therein. The junctions between the support bar (25) and main frame beams (38,40) are welded (54,56) together. Angled plates (60) are fitted between each side (46,48) of each main frame beams (38,40) and the support bar (25), which angled plates (60) are welded (68) to the beams (38,40) and to the hardbar (25). The angled plates (60) bridge (66) the longitudinal welds (54) between the support bar (25) and the beams (38,40) of the main frame (12) to lend some flexibility to the junction therebetween.
    Type: Grant
    Filed: February 2, 1979
    Date of Patent: September 2, 1980
    Assignee: Caterpillar Tractor Co.
    Inventor: Robert F. Ringness