Patents by Inventor Alan D. Webb

Alan D. Webb 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: 5701614
    Abstract: A bath (1) for use by an elderly or disabled person. The bath (1) includes a side opening (3) which extends over the full width and height of the bath (1) and is surrounded by and outwardly and downwardly extending skirt (8). A door (4) with a channel (9) on its inner surface is upwardly translatable in its own plane to bring the door (4) over the opening (3) and force the skirt (8) into sealing engagement with a seal (11, 40) in the channel (9) which may be a foamed rubber seal or a part fluid=filled flexible tube up which the fluid is squeezed to effect sealing in upper portions of the tube as closing is completed.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: December 30, 1997
    Assignee: Alpha Thames Engineering Limited
    Inventors: David E. Appleford, Brian W. Lane, Alan D. Webb
  • Patent number: 4413958
    Abstract: An electric pump assembly (1) for lifting fluids in wells comprises a plurality of electric pumps (20) and (24) located at axially spaced apart locations in the well each pump having an axial aperture (21) to permit wire line operations to be conducted in the well below the assembly (1). Adjacent pumps (20) and (24) can rotate in opposite directions about a common axis to effect torque balancing. Each pump (20) can have a transformer (50) to permit local adjustment of voltage and means (40) are provided for sequential operation of the pumps. Assembly can be supported on cable (12), (14) or on production tubing (60) assisted by packers.
    Type: Grant
    Filed: July 16, 1980
    Date of Patent: November 8, 1983
    Assignee: The British Petroleum Company Limited
    Inventor: Alan D. Webb