Patents by Inventor Daniel Richard Wahlstrom

Daniel Richard Wahlstrom 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: 20100227016
    Abstract: A concrete products forming machine including a main frame, feed drawers, die supports and mold and head assemblies. The feed drawer is moved into position over the mold using an electric belt drive system and includes a vibrating strike off plate to improve surface quality of the molded product, zoned agitators to control movement and placement of concrete, a spring loaded seal system between the walls and floor of the feed box, and quick-release agitator design with urethane sleeves to effect easy and clean removal, replacement and cleaning of the agitators. The concrete products forming machine includes torque tube and leaf spring supports to effect substantially vertical vibrational movement of the mold with air inflatable springs for controlled force between the mold bottom and the pallet. The pallet itself is vibrated from below using phased, counter rotating shafts coupled to the pallet table on which the pallet rests.
    Type: Application
    Filed: April 21, 2010
    Publication date: September 9, 2010
    Applicant: COLUMBIA MACHINE, INC.
    Inventors: Douglas Vernon High, Daniel Richard Wahlstrom, Llewellyn Lee Johnston, Keith Donald Brewer
  • Publication number: 20100086634
    Abstract: A concrete products forming machine including a main frame, feed drawers, die supports and mold and head assemblies. The feed drawer is moved into position over the mold using an electric belt drive system and includes a vibrating strike off plate to improve surface quality of the molded product, zoned agitators to control movement and placement of concrete, a spring loaded seal system between the walls and floor of the feed box, and quick-release agitator design with urethane sleeves to effect easy and clean removal, replacement and cleaning of the agitators. The concrete products forming machine includes torque tube and leaf spring supports to effect substantially vertical vibrational movement of the mold with air inflatable springs for controlled force between the mold bottom and the pallet. The pallet itself is vibrated from below using phased, counter rotating shafts coupled to the pallet table on which the pallet rests.
    Type: Application
    Filed: December 9, 2009
    Publication date: April 8, 2010
    Applicant: COLUMBIA MACHINE, INC.
    Inventors: Douglas Vernon High, Stacy L. Gildersleeve, Daniel Richard Wahlstrom, Llewellyn Lee Johnston, Keith Donald Brewer
  • Patent number: 7635261
    Abstract: A concrete products forming machine including a main frame, feed drawers, die supports and mold and head assemblies. The feed drawer is moved into position over the mold using an electric belt drive system and includes a vibrating strike off plate to improve surface quality of the molded product, zoned agitators to control movement and placement of concrete, a spring loaded seal system between the walls and floor of the feed box, and quick-release agitator design with urethane sleeves to effect easy and clean removal, replacement and cleaning of the agitators. The concrete products forming machine includes torque tube and leaf spring supports to effect substantially vertical vibrational movement of the mold with air inflatable springs for controlled force between the mold bottom and the pallet. The pallet itself is vibrated from below using phased, counter rotating shafts coupled to the pallet table on which the pallet rests.
    Type: Grant
    Filed: January 27, 2006
    Date of Patent: December 22, 2009
    Assignee: Columbia Machine, Inc.
    Inventors: Douglas Vernon High, Stacy L. Gildersleeve, Daniel Richard Wahlstrom, Llewellyn Lee Johnston, Keith Donald Brewer