Patents by Inventor W. David Watts

W. David Watts 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: 5014469
    Abstract: A shot removal system disposed immediately after a shot blast chamber for removal of shot remaining on the workpiece having a blower adapted to blow air laterally across the top surface of the workpiece, blowing air and shot perpendicularly to the direction of movement of the workpiece and a suction device disposed opposite the blower pulling large volumes of air and shot in the same direction as the blower is blowing the shot including an expansion chamber separating shot from waste debris and a return apparatus for recycling shot for re-utilization in the blast chamber.
    Type: Grant
    Filed: August 30, 1989
    Date of Patent: May 14, 1991
    Inventor: W. David Watts
  • Patent number: 4999956
    Abstract: A shot blast device having at least one upper and at least one lower shot blast wheel disposed at angles to the direction of movement of a workpiece within a shot blast chamber, the upper shot blast wheel propelling shot downward onto the top of the workpiece and the lower shot blast wheel propelling shot upwards onto the bottom of the workpiece, the chamber having an upper deflector wall adapted to be struck by shot from the upper shot blast wheel reflected off the top of the workpiece, such shot being deflected to fall on a diverter plate disposed above the workpiece beneath the upper deflector wall, said diverter plate extending beyond the sides of the workpiece directing shot falling thereupon beyond the sides of the workpiece to a shot collection area at the bottom of the blast chamber.
    Type: Grant
    Filed: August 30, 1989
    Date of Patent: March 19, 1991
    Inventor: W. David Watts
  • Patent number: 4872294
    Abstract: A bar and/or coil descaling device having a first chamber for entry of the workpiece therein with dual shotblast machines propelling particles thereagainst on opposite sides of the workpiece with a second chamber into which the bar is passed with dual shotblast machines therein to propel particles on opposite sides of the workpiece, with some embodiments having a shot and debris removal system for any shot or debris left on top of the workpiece, the cleaned workpiece to be then passed out of the device.
    Type: Grant
    Filed: April 24, 1987
    Date of Patent: October 10, 1989
    Inventor: W. David Watts
  • Patent number: 4723377
    Abstract: A drum-cleaning machine having a casing with an indexing mechanism to move drums therethrough at a 45-degree angle, such indexing mechanism including wheels spinning the drums at stations between such wheels; at least one upper shotblast wheel positioned on the casing above the drum whose shotblast pattern is directed downward and is adapted to clean the bottom and sides of the drum; at least one side-mounted shotblast wheel positioned on the casing aligned with the upper shotblast wheel such side-mounted shotblast wheel's shotblast pattern being directed substantially horizontal and adapted to clean the bottom of each drum and if the drum has an open bottom, is adapted to clean the inner sides and inside of the closed end of the drum.
    Type: Grant
    Filed: June 12, 1986
    Date of Patent: February 9, 1988
    Inventor: W. David Watts
  • Patent number: 4395851
    Abstract: An improved abrasive particle blast wheel combining high particle feed rate and long parts wear characteristics, comprising a series of reversible blades mounted within a runner head. An impellor is adapted to rotate in the hub of the wheel within a control cage with each vane of the impellor aligned dead center with the inner end of each blade respectively. The control cage has a large rectangular particle escape opening. An enlarged feed spout conducts the abrasive particles into the impellor assembly and the wheel rotates at a slower than normal speed but maintains high tip velocity due to the larger than normal diameter of the blades. The direction of rotation of the wheel of this invention is reversible without any structural modifications having been made. An improved wear plate structure is also provided wherein some of the wear plate parts are interchangeable with one another.
    Type: Grant
    Filed: February 3, 1981
    Date of Patent: August 2, 1983
    Inventor: W. David Watts
  • Patent number: D270642
    Type: Grant
    Filed: February 3, 1981
    Date of Patent: September 20, 1983
    Inventor: W. David Watts
  • Patent number: D271108
    Type: Grant
    Filed: April 22, 1981
    Date of Patent: October 25, 1983
    Inventor: W. David Watts
  • Patent number: D271109
    Type: Grant
    Filed: April 22, 1981
    Date of Patent: October 25, 1983
    Inventor: W. David Watts
  • Patent number: D271110
    Type: Grant
    Filed: April 22, 1981
    Date of Patent: October 25, 1983
    Inventor: W. David Watts
  • Patent number: D271111
    Type: Grant
    Filed: April 22, 1981
    Date of Patent: October 25, 1983
    Inventor: W. David Watts
  • Patent number: D271204
    Type: Grant
    Filed: April 22, 1981
    Date of Patent: November 1, 1983
    Inventor: W. David Watts
  • Patent number: D271205
    Type: Grant
    Filed: April 22, 1981
    Date of Patent: November 1, 1983
    Inventor: W. David Watts
  • Patent number: D274185
    Type: Grant
    Filed: April 22, 1981
    Date of Patent: June 5, 1984
    Inventor: W. David Watts
  • Patent number: D274526
    Type: Grant
    Filed: February 3, 1981
    Date of Patent: July 3, 1984
    Inventor: W. David Watts