Patents by Inventor Stephen Walker Tebby

Stephen Walker Tebby 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).

  • Pumps
    Patent number: 6402461
    Abstract: A fluid pump (10) has a body housing (14) a fluid pumping chamber having a rotatable pumping member (16), a drive shaft (12) which passes through an aperture in the body into the pumping chamber to effect rotation of the pumping member in use, a seal (18) between the pump body and drive shaft to inhibit fluid moving along the shaft out of the pumping chamber, and a dividing shroud (32) operably located between the seal and the rotatable pumping member to divide the fluid pumping chamber (30) between the seal and the rotatable pumping member.
    Type: Grant
    Filed: March 28, 2000
    Date of Patent: June 11, 2002
    Assignee: Concentric Pumps Limited
    Inventor: Stephen Walker Tebby