Patents by Inventor Leonard Walker

Leonard Walker 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: 20050132595
    Abstract: A system for cleaning a particulate trap comprises locating the trap in a chamber and forcing cleaning air through the trap. The air and removed particulates is extracted from the trap towards a filter. The expelled air essentially without the removed particulates from the chamber, the removed particulates being essentially trapped in the filter. The trap is locatable about a longitudinal axis such that air is urged in a longitudinal direction through the trap. The trap is supportable on at least one rotatable roller to affect rotation about the axis. A motor and blower draws air from the chamber and an air pressure differential about the filter causes the particulate to be directed through the filter and excess air is pumped out of the blower by the motor operating the blower.
    Type: Application
    Filed: December 23, 2003
    Publication date: June 23, 2005
    Inventors: William Schmitt, Cary Ellsworth, Ben Baca, Michael De Leon, Brian Cunningham, Leonard Walker
  • Patent number: D304750
    Type: Grant
    Filed: February 26, 1986
    Date of Patent: November 21, 1989
    Assignee: Du Bois Public Limited Company
    Inventors: Gerald Fitton, Leonard Walker