Patents Assigned to Derrick Corporation
  • Patent number: 10967401
    Abstract: Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: April 6, 2021
    Assignee: DERRICK CORPORATION
    Inventor: Keith F. Wojciechowski
  • Patent number: 10960438
    Abstract: Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: March 30, 2021
    Assignee: DERRICK CORPORATION
    Inventor: Keith Wojciechowski
  • Patent number: 10933444
    Abstract: Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: March 2, 2021
    Assignee: DERRICK CORPORATION
    Inventor: Keith F. Wojciechowski
  • Patent number: 10843230
    Abstract: Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: November 24, 2020
    Assignee: Derrick Corporation
    Inventor: Keith Wojciechowski
  • Patent number: 10835926
    Abstract: Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: November 17, 2020
    Assignee: Derrick Corporation
    Inventor: Keith Wojciechowski
  • Patent number: 10773278
    Abstract: Vibratory screening machines that include stacked screening deck assemblies are provided. In some embodiments, at least one of the vibratory screening machines can include an outer frame, an inner frame connected to the outer frame, and a vibratory motor assembly secured to the inner frame for vibrating the inner frame. A plurality of screen deck assemblies can be attached to the inner frame in a stacked arrangement, each configured to receive replaceable screen assemblies. The screen assemblies can be secured to respective ones of the plurality of the screen deck assemblies by tensioning the screen assemblies in a direction that a material to be screened flows across the screen assemblies. An undersized material discharge assembly can be configured to receive materials that pass through the screen assemblies, and an oversized material discharge assembly can be configured to receive materials that pass over the screen assemblies.
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: September 15, 2020
    Assignee: Derrick Corporation
    Inventors: James R. Colgrove, Michael L. Peresan
  • Patent number: 10603692
    Abstract: A screening machine includes wall members, screen assembly guide members, a screen assembly and a compression assembly. The screen assembly includes a frame with a plurality of side members and a screen supported by the frame. The compression assembly is attached to at least one wall member and forms the screen assembly into a concave shape.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: March 31, 2020
    Assignee: Derrick Corporation
    Inventors: Keith Wojciechowski, Christian Newman
  • Patent number: 10576502
    Abstract: Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: March 3, 2020
    Assignee: Derrick Corporation
    Inventor: Keith Wojciechowski
  • Patent number: 10512939
    Abstract: Embodiments of the present disclosure provide for systems, apparatuses, and methods of securing screen assemblies. Embodiments include a system having a compression assembly with a compression pin and a pin assembly having a pin. The compression assembly may be attached to a first wall member of a vibratory screening machine and the pin assembly may be attached to a second wall member of the vibratory screening machine opposite the first wall member such that the compression assembly is configured to assert a force against a first side portion of a screen assembly and drive a second side portion of the screen assembly against the pin of the pin assembly. The pin assembly may include a pin that is internally or externally mounted and that is adjustable and/or replaceable.
    Type: Grant
    Filed: April 15, 2018
    Date of Patent: December 24, 2019
    Assignee: Derrick Corporation
    Inventor: Christian T. Newman
  • Patent number: 10434442
    Abstract: An example nonlimiting embodiment of the present invention provides a flow divider that includes a slurry receiving compartment and a discharge arrangement having a plurality of discharge apertures. The slurry receiving compartment is arranged to relatively uniformly flow a portion of a slurry into each of the discharge apertures. The discharge apertures may be arranged linearly and/or horizontally such that the portions of the slurry exits each of the discharge apertures at a relatively even flow rate and feed feed boxes connected to vertically tiered screening surfaces of a screening machine.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: October 8, 2019
    Assignee: Derrick Corporation
    Inventors: Mike Peresan, James Colgrove
  • Patent number: 10399124
    Abstract: Vibratory screening machines that include stacked screening deck assemblies are provided. In some embodiments, at least one of the vibratory screening machines can include an outer frame, an inner frame connected to the outer frame, and a vibratory motor assembly secured to the inner frame for vibrating the inner frame. A plurality of screen deck assemblies can be attached to the inner frame in a stacked arrangement, each configured to receive replaceable screen assemblies. The screen assemblies can be secured to respective ones of the plurality of the screen deck assemblies by tensioning the screen assemblies in a direction that a material to be screened flows across the screen assemblies. An undersized material discharge assembly can be configured to receive materials that pass through the screen assemblies, and an oversized material discharge assembly can be configured to receive materials that pass over the screen assemblies.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: September 3, 2019
    Assignee: Derrick Corporation
    Inventors: James R. Colgrove, Michael L. Peresan
  • Patent number: 10363577
    Abstract: A screening machine includes wall members, screen assembly guide members, a screen assembly and a compression assembly. The screen assembly includes a frame with a plurality of side members and a screen supported by the frame. The compression assembly is attached to at least one wall member and forms the screen assembly into a concave shape.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: July 30, 2019
    Assignee: Derrick Corporation
    Inventors: Keith Wojciechowski, Christian Newman
  • Patent number: 10350640
    Abstract: A vibratory screening machine includes a primary screening area and a pre-screening assembly including a frame and screen assemblies. The screen assemblies are secured to the frame and form a pre-screening surface. The frame is attached to the vibratory screening machine such that the concave pre-screening surface is above the primary screening area.
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: July 16, 2019
    Assignee: Derrick Corporation
    Inventors: Keith Wojciechowski, Christian Newman
  • Patent number: 10259013
    Abstract: Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: April 16, 2019
    Assignee: Derrick Corporation
    Inventor: Keith F. Wojciechowski
  • Patent number: 10046363
    Abstract: Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: August 14, 2018
    Assignee: Derrick Corporation
    Inventor: Keith F. Wojciechowski
  • Patent number: 9956591
    Abstract: A screening machine includes wall members, screen assembly guide members, a screen assembly and a compression assembly. The screen assembly includes a frame with a plurality of side members and a screen supported by the frame. The compression assembly is attached to at least one wall member and forms the screen assembly into a concave shape.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: May 1, 2018
    Assignee: Derrick Corporation
    Inventors: Keith Wojciechowski, Christian Newman
  • Patent number: 9956592
    Abstract: Embodiments of the present disclosure provide for systems, apparatuses, and methods of securing screen assemblies. Embodiments include a system having a compression assembly with a compression pin and a pin assembly having a pin. The compression assembly may be attached to a first wall member of a vibratory screening machine and the pin assembly may be attached to a second wall member of the vibratory screening machine opposite the first wall member such that the compression assembly is configured to assert a force against a first side portion of a screen assembly and drive a second side portion of the screen assembly against the pin of the pin assembly. The pin assembly may include a pin that is internally or externally mounted and that is adjustable and/or replaceable.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: May 1, 2018
    Assignee: Derrick Corporation
    Inventor: Christian T. Newman
  • Patent number: D854066
    Type: Grant
    Filed: April 15, 2018
    Date of Patent: July 16, 2019
    Assignee: Derrick Corporation
    Inventors: James R. Colgrove, Michael L. Peresan
  • Patent number: D890236
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: July 14, 2020
    Assignee: Derrick Corporation
    Inventors: James R. Colgrove, Michael L. Peresan
  • Patent number: D915484
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: April 6, 2021
    Assignee: DERRICK CORPORATION
    Inventors: James R. Colgrove, Clifford C. Smith