Abstract: A production tool for use in heavy oil production is provided. Operating to provide for better inflow of oil and sand to a bottom hole rotating pump, the production tool prevents sand up conditions and keeps the well cellar and the walls of the casing clean to ensure longer periods between workovers. The production tool has a cylindrical member with at least one helical fin extending substantially to the inner radius of the casing, and a gear reducer which drives the cylindrical member at a reduced rotation from input from the rotor of the bottom hole rotating pump. The rotational motion of the cylindrical member in conjunction with the sense of the helical fin cause bore effluence to move to the intake of the rotating pump, effecting constant inflow.

Abstract: The present invention relates to a universal joint shaft which includes a driving shaft and driven shaft engaged to a driving yoke and driven yoke which are arranged in an installation position and have opposite both front ends which are distanced and a rectangular cross section in a radius direction, and a three-divided joint formed of connection shafts and having a cross section in a radius direction to correspond to the driving shaft and driven shaft for implementing a radius direction slip and rotational force transfer between the driving shaft and the driven shaft, wherein the universal joint shaft includes a driving yoke and a driven yoke for transferring a rotational force in an inclined state at a certain angle.

Abstract: The spring rod end retention clip includes a detent head with retention arms spaced a first distance from the enlarged detent head for engaging panels within a range of relatively lesser thicknesses and a snap fit prong spaced a second distance from the enlarged detent head for engaging panels within a range of relatively greater thicknesses. The retention arms include tapered interior edges so that the retention arms can flex inwardly when a rod is engaged within the detent head and a panel of the range of relatively greater thicknesses is engaged by the detent head.

Abstract: A two piece cover assembly for protectively covering an end of a component, such as a slip yoke, in a vehicle drive train assembly includes a tubular piece and a cap piece. The tubular piece is hollow and is adapted to fit over and frictionally engage an end portion of the component. A portion of the tubular piece may be deformed to provide such frictional engagement. The cap piece is removably attached to the tubular piece by cooperating retaining structures provided thereon.

Abstract: A device for assembling prefabricated concrete parts has a cable loop anchored at one end to the prefabricated concrete part. The other loop-like end cooperates with a retaining means provided at the front face of the prefabricated concrete part to elastically bend the cable loop approximately at right angle during the fabrication of the prefabricated concrete part, and to release it for assembling. An elongated, U-shaped box (1) having a substantially uniform cross-section is provided as retaining means. The bottom (2) of the box has one or several passages (4) for the cable loop (5) and means arranged in the area of the passages (4) to retain the cable loop (5) perpendicularly to the longitudinal extension of the box (1).

Abstract: A device for connecting the bitter end of a cable to a product in a tethered product display. The display has a panel with a small hole sized slightly larger than the diameter of the cable, and the device is secured to the cable after the cable is extended through the hole from a cable retractor located behind the panel.