Patents Assigned to Bird Oil Equipment Ltd.
  • Pump jack
    Patent number: 4051736
    Abstract: A improved pump jack for reciprocating an oil well pump. The improved jack having a unique geometric design wherein the pump includes horizontal push rods for pushing a polish rod load around the radius of a sector head thereby greatly reducing the load on a sampson post and producing a greater mechanical advantage in the raising and lowering of the pump.
    Type: Grant
    Filed: January 14, 1976
    Date of Patent: October 4, 1977
    Assignee: Bird Oil Equipment, Ltd.
    Inventor: Gomer W. Jones
  • Speed reducer box for driving a pump jack
    Patent number: 4028964
    Abstract: An improved light weight speed reducer box for driving an oil pump jack and reducing the speed from a drive motor or the like to the pump jack. The speed reducer box includes reversible chain driven sprockets mounted on an input shaft, idle shaft, and output shaft. By mounting the shafts between a separate upper and lower housing, maintenance can be quickly performed on the speed reducer box.
    Type: Grant
    Filed: January 14, 1976
    Date of Patent: June 14, 1977
    Assignee: Bird Oil Equipment Ltd.
    Inventor: Gomer W. Jones