Patents by Inventor Robert Frank Swindell

Robert Frank Swindell 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).

  • Diatomaceous earth filter apparatus and method
    Patent number: 10427076
    Abstract: A method for removing diatomaceous earth and contaminants from a filter, and for filtering liquid using diatomaceous earth is provided. Embodiments of the method can include a washdown process, a backwash process, and a filtering process. Some embodiments can include one or more filter cartridges with cartridge tubes to increase flow during the backwash process. Some embodiments can also include a backwash sprayer to disturb contaminants during the backwash process.
    Type: Grant
    Filed: March 5, 2015
    Date of Patent: October 1, 2019
    Assignee: Pentair Water Pool and Spa, Inc.
    Inventors: Robert Frank Swindell, Leonard Richiuso, Brian Everett Cox
  • Diatomaceous Earth Filter Apparatus and Method
    Publication number: 20150174515
    Abstract: A method for removing diatomaceous earth and contaminants from a filter, and for filtering liquid using diatomaceous earth is provided. Embodiments of the method can include a washdown process, a backwash process, and a filtering process. Some embodiments can include one or more filter cartridges with cartridge tubes to increase flow during the backwash process. Some embodiments can also include a backwash sprayer to disturb contaminants during the backwash process.
    Type: Application
    Filed: March 5, 2015
    Publication date: June 25, 2015
    Inventors: Robert Frank Swindell, Leonard Richiuso, Brian Everett Cox
  • Diatomaceous earth filter apparatus and method
    Patent number: 8992775
    Abstract: The invention provides an apparatus and method for removing diatomaceous earth and contaminants from a filter and for filtering liquid using diatomaceous earth. Embodiments of the method can include a washdown process, a backwash process, and a filtering process. Some embodiments of the apparatus can include one or more filter cartridges with cartridge tubes to increase flow during the backwash process. Some embodiments of the apparatus can include a backwash sprayer to disturb contaminants during the backwash process. Some embodiments of the apparatus can include a removable lid to access the filter cartridges during the washdown process.
    Type: Grant
    Filed: October 31, 2006
    Date of Patent: March 31, 2015
    Assignee: Pentair Water Pool and Spa, Inc.
    Inventors: Robert Frank Swindell, Leonard Richiuso, Brian Everett Cox
  • Filter devices including a porous body
    Patent number: 7513993
    Abstract: Fluid filter devices include at least one porous body. In one example, the fluid filter device can be incorporated as part of a fluid filter apparatus. The fluid filter apparatus can include a container defining an interior area wherein the filter device is positioned within the interior area. Particulate can be positioned within the interior area to cover the porous body to enhance the filter capabilities of the fluid filter apparatus.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: April 7, 2009
    Assignee: Pentair Water Pool and Spa, Inc.
    Inventors: Timothy Michael Goodwin, Christopher R. Yahnker, Robert Frank Swindell, Bret Schaller, Shirley A. Bromley, legal representative, Arthur J. Bromley
  • Diatomaceous earth filter apparatus and method
    Publication number: 20080099408
    Abstract: The invention provides an apparatus and method for removing diatomaceous earth and contaminants from a filter and for filtering liquid using diatomaceous earth. Embodiments of the method can include a washdown process, a backwash process, and a filtering process. Some embodiments of the apparatus can include one or more filter cartridges with cartridge tubes to increase flow during the backwash process. Some embodiments of the apparatus can include a backwash sprayer to disturb contaminants during the backwash process. Some embodiments of the apparatus can include a removable lid to access the filter cartridges during the washdown process.
    Type: Application
    Filed: October 31, 2006
    Publication date: May 1, 2008
    Inventors: Robert Frank Swindell, Leonard Richiuso, Brian Everett Cox