Patents by Inventor Bruno L. Risatti

Bruno L. Risatti 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: 20250108319
    Abstract: This disclosure describes a filter element for hydraulic fluid that includes a first filter component having a first filter size and a second filter component having a second filter size. The first filter component may be arranged within a housing to filter the hydraulic fluid between an inlet and an outlet of the filter element. The second filter component may include a screen, mesh, or other filter media with the second filter size (e.g., mesh size) greater than the first filter size. The second filter component may include a screen for a bypass valve. The bypass valve may be integrated within the filter element and provide a second outlet through the filter element. The outlet and the second outlet from the filter element may re-join downstream of the bypass valve to provide a single outlet flow vector from a filter system.
    Type: Application
    Filed: September 9, 2024
    Publication date: April 3, 2025
    Inventors: Bruno L. Risatti, Bryan W. Rickards
  • Patent number: 11708684
    Abstract: A hydraulic tank for a machine is disclosed herein. The hydraulic tank includes a casing defining an interior space and having an outer surface, an inner surface opposite the inner surface, and a return hydraulic fluid inlet extending through the casing. A first concave member is connected to the inner surface of the casing to form a passage. The passage is positioned and shaped to transport hydraulic fluid from the return hydraulic fluid inlet to another location within the hydraulic tank.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: July 25, 2023
    Assignee: Caterpillar Inc.
    Inventors: Jared E. Louis, Bruno L. Risatti
  • Patent number: 11428336
    Abstract: A ball float vent valve includes a valve body having an inlet port, an outlet port and an axial passageway there-between. The passageway may be defined by a cylindrical inlet chamber, a cylindrical outlet chamber and a tapered seat connecting the inlet chamber and outlet chamber. The outlet chamber may include an annular retaining groove proximate the outlet port. A spherical float may be positioned in the outlet chamber. The float may be dimensioned to seal the passageway when seated on the tapered seat. A retainer positioned in the retaining groove may include an outer crescent region having a plurality of apertures, a center region dimensioned to retain the float in the outlet chamber, and a linking region connecting the outer region to the center region.
    Type: Grant
    Filed: December 4, 2020
    Date of Patent: August 30, 2022
    Assignee: Caterpillar Inc.
    Inventors: William N. O'Neill, Bruno L. Risatti, Michael A. Zolvinski, Bill F. Erdman, Dayao Chen
  • Publication number: 20220178457
    Abstract: A ball float vent valve includes a valve body having an inlet port, an outlet port and an axial passageway there-between. The passageway may be defined by a cylindrical inlet chamber, a cylindrical outlet chamber and a tapered seat connecting the inlet chamber and outlet chamber. The outlet chamber may include an annular retaining groove proximate the outlet port. A spherical float may be positioned in the outlet chamber. The float may be dimensioned to seal the passageway when seated on the tapered seat. A retainer positioned in the retaining groove may include an outer crescent region having a plurality of apertures, a center region dimensioned to retain the float in the outlet chamber, and a linking region connecting the outer region to the center region.
    Type: Application
    Filed: December 4, 2020
    Publication date: June 9, 2022
    Applicant: Caterpillar lnc.
    Inventors: William N. O'Neill, Bruno L. Risatti, Michael A. Zolvinski, Biil F. Erdman, Dayao Chen
  • Publication number: 20210131062
    Abstract: A hydraulic tank for a machine is disclosed herein. The hydraulic tank includes a casing defining an interior space and having an outer surface, an inner surface opposite the inner surface, and a return hydraulic fluid inlet extending through the casing. A first concave member is connected to the inner surface of the casing to form a passage. The passage is positioned and shaped to transport hydraulic fluid from the return hydraulic fluid inlet to another location within the hydraulic tank.
    Type: Application
    Filed: November 6, 2019
    Publication date: May 6, 2021
    Applicant: Caterpillar Inc.
    Inventors: Jared E. Louis, Bruno L. Risatti
  • Publication number: 20130187360
    Abstract: An axle for providing a steering arrangement in a machine. The axle including a differential housing from which a first arm and a second arm are extending. A first support portion is disposed in the first arm. The first support portion is configured to receive a first steering actuator. Similarly, a second support portion is disposed in the second arm. The second support portion is configured to receive a second steering actuator.
    Type: Application
    Filed: January 20, 2012
    Publication date: July 25, 2013
    Applicant: Caterpillar Inc.
    Inventors: Steven D. Springer, Bruno L. Risatti