Patents by Inventor Philip E. McGrath

Philip E. McGrath 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).

  • High gas dispersion efficiency glass coated impeller
    Patent number: 6190033
    Abstract: A glass coated gas dispersing impeller. The impeller comprises a hub, having a centrally located hole. The hole has a central axis and is sized for passage over a drive shaft having an essentially vertically extending longitudinal axis so that the central axis of the centrally located hole corresponds with the longitudinal axis of the shaft. The impeller has a plurality of angles and edges, all of which have a rounded configuration. The impeller further comprising a plurality of blades secured to the hub that extend radially outward from the central axis. Each of the blades has a leading concave surface and a trailing convex surface both of which are defined by a lower edge, an upper edge, an inner edge and an outer edge. The concave surface is configured so that the upper edge overhangs the lower edge. The blades may be connected to the hub directly or by intermediate connecting means such as a disk or arm integral with the hub and extending radially outwardly from the central axis.
    Type: Grant
    Filed: April 9, 1999
    Date of Patent: February 20, 2001
    Assignee: Pfaulder, Inc.
    Inventors: Wayne N. Rickman, Philip E. McGrath, Matthias Georg Heinzmann
  • High axial flow glass coated impeller
    Patent number: 6082890
    Abstract: A glass coated high axial flow impeller, including a hub and attached blades. The hub has a centrally located hole, where the hole has a central axis. The impeller has a plurality of angles and edges, all of which have a rounded configuration to permit glassing. The impeller further includes at least two variable pitch blades. Each blade has front and rear surfaces both defined by an inside edge having a leading end and a trailing end, an outside edge having a leading end and a trailing end, a leading edge connecting the leading end of the inside edge to the leading end of the outside edge and a trailing edge that connects the trailing end of the inside edge to the trailing end of the outside edge. The outside edge of each blade is from about 1.5 to 2.5 times the length of the inside edge.
    Type: Grant
    Filed: March 24, 1999
    Date of Patent: July 4, 2000
    Assignee: Pfaudler, Inc.
    Inventors: Matthias Georg Heinzmann, Wayne N. Rickman, Philip E. McGrath
  • Flexural spring support for vibratory apparatus
    Patent number: 5464498
    Abstract: A flexural spring support for a vibratory apparatus comprises a unitary metal body which includes a substantially stationary member, an oppositely disposed spaced member intended to move in a plane, and a plurality of flexural spring beams coupling the members to one another. Each flexural spring beam is constructed as a substantially constant strain tapered beam.
    Type: Grant
    Filed: August 18, 1994
    Date of Patent: November 7, 1995
    Assignee: Branson Ultrasonics Corporation
    Inventor: Philip E. McGrath