Patents by Inventor Roger Lawton Naylor

Roger Lawton Naylor 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).

  • Progressing cavity pump having a ratio of eccentricity, rotor diameter and stator lead
    Patent number: 6220837
    Abstract: A progressing cavity pump adapted for use in pumping liquid/solid mixtures with a solid content of about 50% has a single start helical rotor and a two start helical stator bore. The ratio of the eccentricity of the rotor to its minor diameter is about 1:4.9. The ratio of the eccentricity of the rotor to the stator lead is about 1:13.3. The pump may be truck mounted and used for pumping explosives.
    Type: Grant
    Filed: September 2, 1999
    Date of Patent: April 24, 2001
    Assignee: Mono Pumps Limited
    Inventor: Roger Lawton Naylor