Patents by Inventor David E. Dudley

David E. Dudley 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: 6156213
    Abstract: A water filter includes a cartridge filter element mounted on a coaxial bearing so it can be spun. During normal operation, a pressure tank enclosure allows the outside of the cartridge filter element to be submerged. Filtered water is then collected by a filtered-water return inside the cartridge filter element. An air vent disposed in the pressure tank housing allows water to drain away before starting a cleaning cycle, and to bleed off trapped air before returning to normal operation. During cleaning, a flow of clean water is applied to the filtered-water drain. A wash drain in the bottom of the pressure tank enclosure allows used cleaning water to flow out. The reverse water flow through the filtered-water drain forces closed a flapper valve. This, in turn, causes a water spray jet manifold to fill under pressure and cleaning water sprays out from slightly offset nozzles directed at the cartridge filter element.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: December 5, 2000
    Inventors: David E. Dudley, Joseph D. Robertson
  • Patent number: 5989419
    Abstract: A cartridge-filter cleaning spinner comprises a handheld spindle rod that can accommodate a variety of filter sizes. The spindle rod has two inward pointing slip-ring hand-tightened hubs. A cartridge filter is loaded on the spindle rod by removing one of the slip-ring hand-tightened hubs, slipping the cartridge filter onto the spindle snug against the other slip-ring hand-tightened hub, and then reinstalling the first slip-ring hand-tightened hub on the spindle rod. The cartridge filter is then free to spin around while the spindle rod handles themselves remain stationary. A water jet from a garden hose is then directed at one end of the cartridge filter to one side so the cartridge filter begins spinning. The water jet is then worked down slowly to the opposite end while keeping the spinning action going. The process is then repeated, but with the water jet directed to the other side so the cartridge filter spins in the opposite direction.
    Type: Grant
    Filed: March 2, 1998
    Date of Patent: November 23, 1999
    Inventors: David E. Dudley, Joseph D. Robertson
  • Patent number: 5388682
    Abstract: An article diverter for changing the conveyor path of successive conveyed articles from a single succession to at least two successions of articles. The diverter includes actuators positioned adjacent to one conveyor path but on opposite sides of the conveyor path. A flexible terminal end of one actuator is moveable, across the conveyor path to end adjacent to the flexible terminal end of another actuator when said ends are compressed. Each of the flexible terminal ends are directed towards the center of the first conveyor path when compressed. The flexible terminal ends are connected to piston rods which are retractable and extendable responsive to a control signal. The two actuators contain a member to hold their terminal end parallel to the conveyor path when the rod is extended and in a second position which intersects the conveyor path when the rods are retracted. When the ends of the two actuators intersect the conveyor path, articles contacting the actuators are diverted to a second path.
    Type: Grant
    Filed: February 23, 1994
    Date of Patent: February 14, 1995
    Assignee: Peco Controls Corporation
    Inventor: David E. Dudley
  • Patent number: 5135101
    Abstract: A diverter changes the conveyor path of successive articles from a single succession to at least two successions of articles. The diverter includes a wheel mounted for rotation in a common plane with the path of the single succession of articles and being movable between one location adjacent the path and other location interposed within the path. The wheel has a top peripheral edge defining a series of radial vanes and pressurized air is directed towards the vanes upstream relative to the path of articles for spinning the wheel towards the succession of articles. The wheel has a resilient, shock-absorbing, peripheral surface for contacting articles and can be adjusted in elevation to contact articles at the same level as the articles center of mass.
    Type: Grant
    Filed: October 2, 1991
    Date of Patent: August 4, 1992
    Assignee: Peco Controls Corporation
    Inventor: David E. Dudley
  • Patent number: 4458894
    Abstract: A portable support assembly for mounting a doorway comprising means for engaging a first horizontal bar to the interior of a door jamb and the means for supporting a second horizontal support bar outwardly from the door jamb and above the elevation of the door jamb.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: July 10, 1984
    Assignee: In-Door Gym
    Inventor: David E. Dudley