Patents by Inventor David C. Butler

David C. Butler 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).

  • Patent number: 9027581
    Abstract: Systems and methods provide pneumatic control of a slam shut valve system.
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: May 12, 2015
    Assignee: Dresser, Inc.
    Inventor: David C. Butler
  • Publication number: 20110259434
    Abstract: Systems and methods provide pneumatic control of a slam shut valve system.
    Type: Application
    Filed: April 19, 2011
    Publication date: October 27, 2011
    Inventor: David C. Butler
  • Patent number: 7845469
    Abstract: A versatile, easy to use, adjustable tool, paint, accessory and supply caddy for use on an extension ladder. The caddy can be used on ladders having rungs that are either round in cross section or have steps that are flat and more rectangular in shape. Upper and lower mounting cradles attach to any consecutive rungs of the extension ladder at two separate attachments points. A quick release, spring loaded clamping mechanism allows the ladder caddy to be quickly and securely attached and then removed from the ladder, with the upper and lower mounting cradles adjustable to accommodate different ladder rung/step shapes as well as diameters and distances between rungs. Paddle shaped trays can be locked in place on the caddy in a variety of positions, and the trays can swing over or under each other or be swung in opposing directions away from the ladder user thereby creating a useable work space adaptable to almost any ladder position.
    Type: Grant
    Filed: July 19, 2007
    Date of Patent: December 7, 2010
    Inventors: David C. Butler, Clint L. Dixon
  • Patent number: 7077238
    Abstract: A ladder caddy for holding tools, small parts, and the like for a workman on a ladder includes four curved cradles for holding the caddy to the ladder, two of the cradles holding consecutive and respective rungs of the ladder when the caddy is mounted in a first position, and two of the cradles holding consecutive and respective rungs of the ladder when the caddy is mounted in a second position inverted and upside down from the first position. The caddy includes a tool holding structure extending outwardly from the ladder at an angle of approximately 15 degrees offset from perpendicular so that when the caddy is mounted on a leaning ladder the structure extends approximately horizontally. The caddy includes a clamp for clamping to the ladder, integrally formed tool holders, and a variety of accessories that mate with the caddy body.
    Type: Grant
    Filed: July 17, 2004
    Date of Patent: July 18, 2006
    Inventors: David C. Butler, Clint L. Dixon
  • Patent number: 6530531
    Abstract: A pop-up sprinkler of the type that includes a riser that moves upwardly out of a sprinkler housing when water pressure is applied and that allows manual adjustment of the angular orientation of the riser with respect to the housing to adjust angular orientation of the spray from the sprinkler, and provides for such angular adjustment by having a toothed flange associated with the riser in the housing which engages tabs associated with the housing, provides for longer life of the toothed flange and/or the tabs by providing slots extending radially inwardly in the toothed flange to reduce its rigidity to the extent that the teeth and/or tabs do not wear as quickly.
    Type: Grant
    Filed: August 12, 2001
    Date of Patent: March 11, 2003
    Assignee: Orbit Irrigation Products, Inc.
    Inventor: David C. Butler
  • Publication number: 20020066800
    Abstract: A pop-up sprinkler of the type that includes a riser that moves upwardly out of a sprinkler housing when water pressure is applied and that allows manual adjustment of the angular orientation of the riser with respect to the housing to adjust angular orientation of the spray from the sprinkler, and provides for such angular adjustment by having a toothed flange associated with the riser in the housing which engages tabs associated with the housing, provides for longer life of the toothed flange and/or the tabs by providing slots extending radially inwardly in the toothed flange to reduce its rigidity to the extent that the teeth and/or tabs do not wear as quickly.
    Type: Application
    Filed: August 12, 2001
    Publication date: June 6, 2002
    Inventor: David C. Butler