Patents Assigned to Schlumberger Canada, Ltd.
  • Patent number: 5196783
    Abstract: A vent (180) for an electricity metering device (30) having a housing (34) having a generally planar surface thereon with a cavity (35), a plurality of vent openings (182) on the surface of the housing (34) which extend through the surface for allowing passage of air therethrough and a plurality of vent shields (184) positioned on one side of the surface adjacent each of the vent openings (182), preventing access through the vent openings (182) into the interior of the housing (34), the vent shields (184) including a first wall (190) extending generally perpendicular from the surface of the housing, and a second wall (192) attached to the first wall (190) extending generally parallel to the surface.
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: March 23, 1993
    Assignee: Schlumberger Canada, Ltd.
    Inventor: Chesley R. Howell
  • Patent number: 5134544
    Abstract: A cable retention mechanism (170) for an electricity metering device (30) including a housing (34) having a cavity, a cover (36) positioned on the housing (34) and enclosing the cavity, and wherein the housing (34) has a cable entry slot (96) adjacent an edge of the cavity for placement of a cable therein. The cover (36) has a first retainer (174) extending outwardly from the housing and positioned adjacent the cable entry slot (96) when the cover (36) is positioned on the housing (34), and a second retainer (176) extending from the cover (36) into the cavity adjacent the cable entry slot (96) when the cover (36) is positioned on the housing (34), whereby the first retainer (174), the slot (96), and the second retainer (176) bend and position the cable in a generally U-shaped configuration when the cover (36) is positioned on the housing (34) and the cable is in the slot (96 ).
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: July 28, 1992
    Assignee: Schlumberger Canada, Ltd.
    Inventor: Chesley R. Howell
  • Patent number: 5088004
    Abstract: An electricity metering interbase device (30) for connecting a primary electrical metering device (40) and a power source (42) includes a generally cylindrical base (32) from which a generally rectangular terminal housing (34) extends, and a cover (36). The cover (36) includes one or more hinge pins (120,122) and the terminal housing (34) includes one or more corresponding hinge slots (80,82) adapted to mate and hingedly attach the terminal housing (34) and cover (36) around an axis of rotation, and allowing removal of the cover (36) from the terminal housing (34) upon disassembly of the hinge pins (120,122) from the hinge slots (80,82) in the direction of the axis of rotation. Barriers (130,132) are provided for preventing disassembly of the cover (36) from the terminal housing (34) when the cover (36) is in a closed position covering the cavity (35) of the terminal housing (34).
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: February 11, 1992
    Assignee: Schlumberger Canada, Ltd.
    Inventor: Chesley R. Howell