Patents Represented by Attorney George Dunsmuir
  • Patent number: 5588270
    Abstract: A reinforcing arrangement or device which substantially prevents sagging of the lower section of a multi-sectional Up and over type door. The natural load on the lower center of the bottom panel of the door being upwardly and vertically controlled and translated laterally and downwardly to the bottom corners the door by the device, to maintain overall conformity.
    Type: Grant
    Filed: June 26, 1995
    Date of Patent: December 31, 1996
    Inventor: Carey E. Keating
  • Patent number: 5354471
    Abstract: Conventional biological processes for treating wastewater include the so-called activated sludge process which is continuous and the sequencing batch reaction (SBR) activated sludge process. The first process requires the use of dedicated, relatively expensive external clarifiers, and the second process is inefficient in terms of treatment volume. A modified sequencing batch reactor process and system enable the efficient, continuous treatment and discharge of wastewater, combing the advantages of the SBR and activated sludge processes. In the present case, wastewater is initially fed in a first direction through a plurality of contiguous cells, the wastewater is subjected at all times to biological treatment in a plurality of such cells and settled in at least one of the cells immediately prior to discharge from the system.
    Type: Grant
    Filed: October 19, 1992
    Date of Patent: October 11, 1994
    Inventors: Peter L. Timpany, Chester Q. Yang
  • Patent number: 5316352
    Abstract: A method and apparatus for coupling pipe, and installing coupled pipe in a trenchless installation, the pipe being adapted for use as a watermain or the like. Lengths of watermain pipe are provided with a bell at each end, and connecting nipples adapted to be received within opposing bells, to effect a fluid-tight seal. As lengths of watermain are urged into a trenchless tunnel, opposing bell-end faces withstand the force being exerted on the pipe sections, so that damage is avoided and a sealed underground pipe installation is economically and quickly effected.
    Type: Grant
    Filed: December 16, 1991
    Date of Patent: May 31, 1994
    Inventor: Michael S. Smith
  • Patent number: 4920957
    Abstract: Conventional massage devices rely on rotary motion for massaging the skin or tissue of the user. A massage device for effecting a gentle kneading of the scalp includes a casing with an open bottom end, a pair of crossbars slidably mounted in tracks in such opening for cyclical reciprocating movement towards and away from each other, fingers extending downwardly from each of the crossbars, resilient pads on the outer, free ends of the fingers, a pair of meshing gears above the crossbars between the tracks, arms eccentrically connected to the gears and connected to the crossbars for effecting reciprocating movement of the crossbars in the tracks and of the fingers and pads with the crossbars, an electric motor, and speed reducing transmission means connected to the motor and to the gears for rotating the latter at a slow speed.
    Type: Grant
    Filed: June 20, 1988
    Date of Patent: May 1, 1990
    Inventor: W. Don Sutherland
  • Patent number: 4899933
    Abstract: An insert for use in a level railway crossing includes an elongated high molecular weight body defined by a generally trapezoidal head with one planar vertical side edge, a shoulder extending outwardly and downwardly from the other side edge of the head for bearing against the bottom of one side of the head of a rail, a bottom portion for extending downwardly into engagement with the top surface of the base of the rail at the junction between such top surface and the vertical web of the rail, and circular cross section seals in longitudinally extending rectangular grooves in the one side edge of the head and in the inclined top surface of the shoulder for sealing with an adjacent plank and with the rail. The insert restricts the entry of the water and other foreign matter into the area of the bottom of the rails.
    Type: Grant
    Filed: March 25, 1987
    Date of Patent: February 13, 1990
    Inventor: John K. Martin
  • Patent number: D303443
    Type: Grant
    Filed: November 16, 1987
    Date of Patent: September 12, 1989
    Inventor: Ian R. Shoctor
  • Patent number: D342869
    Type: Grant
    Filed: May 7, 1992
    Date of Patent: January 4, 1994
    Inventor: Gary J. Fry
  • Patent number: D359252
    Type: Grant
    Filed: April 4, 1994
    Date of Patent: June 13, 1995
    Inventors: Patrick Wilkes, Roger E. Sparks