Abstract: Running tool apparatus for lifting heavy equipment such as diverters and other devices utilizing a drilling rig drawworks. The running tool has a slotted discs and pins mechanism to cause engaging dogs to engage and disengage the heavy equipment when rotational force is applied. A keeper assembly mounted at the top of the running tool keys into an impression at the top of the heavy equipment to secure the outer body of the running tool with respect to the heavy equipment. The inner body is sealed with respect to the outer body and the tool is shaped so that the heavy equipment can be pressure tested with the running tool engaged in the bore of the heavy equipment.

Abstract: A mechanical seal construction for use between a wall and a shaft extending through the wall and rotatable relative thereto, the seal construction comprising a seal assembly which includes a pair of seal elements having mutually engaging sealing faces, one seal element being fixed with respect to the wall and the other seal element being rotatable in response to rotation of the shaft, the seal assembly having an inner annular member operatively engaged with the stationary seal element and having a radially outwardly facing surface, at least three, generally equally spaced hemispherical recesses being formed in the surface, a fixed outer annular member in surrounding relationshp to the inner annular member, the outer annular member having at least three equally spaced, axially extending grooves, each of the receses having received therein a ball having a radius substantially equal to the radius of the recess, each of the balls projecting into a respective one of the grooves to prevent relative rotation between

Abstract: An improved packing assembly is provided for forming a metal-to-metal sealing engagement between an outer cylindrical surface and an inner cylindrical surface within downhole or surface hydrocarbon recovery equipment having an axially extending flow path therein. The packing assembly includes an outer seal ring and a inner seal ring with upper and lower tapered surfaces, an upper energizing ring and a lower energizing ring each having tapered surfaces for sliding engagement with a tapered surface of the seal rings, and an interconnection member for limiting axial movement of the energizing rings.

Abstract: An aerodynamic wing apparatus for use with a boat to reduce drag on the hull of a boat by lifting the boat partially out of the water. The wing is movable fore and aft so that it may be positioned near the center of gravity of the boat as the center of gravity changes depending upon the loading of the boat. The wing has variable pitch to provide for a relatively constant amount of lift over a range of boat speeds.

Abstract: A cutting element for a rotary drill bit comprises a thin superhard table of polycrystalline diamond material, defining a front cutting face, bonded to a less hard substrate. The substrate is formed from a material containing at least a proportion of tungsten metal. The substrate may be formed of a metal matrix composite comprising tungsten metal particles in a metal binder phase comprising material selected from: Cu, Co, Ni+Cu, Ni+Fe, Ni+Fe+Mo, Co+Ni. The substrate may also include tungsten carbide in which case the tungsten metal may be replaced by another softer refractory material.

Abstract: An interface is provided for mounting a sampling pump to a flow line. The sampling pump includes a pump manifold having a hot loop flow path through the manifold, and the pump has an inlet along the hot loop. The interface includes an interface body having tapered threads at a lower end thereof for sealing engagement with the threads of a flow line nipple, first and second fittings, first and second nipples for sealing engagement with ports in the pump manifold body, a spacer nipple, and an interface plate for mounting between the interface body and the pump manifold. The interface of the present invention may be used to mount or remount a pump and related components within an enclosure to a flow line, and the rotational position of the enclosure may be selected after the pump body has been threaded to the flow line nipple. A method is disclosed for efficiently mounting the pump to the flow line, thereby substantially reducing installation costs.

Abstract: A rotary drill bit comprises a bit body having a shank for connection to a drill string and a passage for supplying drilling fluid to the face of the bit, which carries a plurality of polycrystalline diamond preform cutting elements. In order to reduce bit whirl, the cutting elements are so disposed as to apply a resultant lateral force to the bit as it rotates during drilling, and the gauge of the bit body is provided with low friction bearing means to transmit said resultant force to the sides of the borehole. Each low friction bearing means includes a roller mounted on the bit body for rotation about an axis parallel to the axis of rotation of the bit, each roller being so disposed that its periphery bears on the formation as the bit rotates.

Abstract: An improved intermediate support is provided for ensuring the safety of a worker while moving relative to a fixed structure at elevated locations, with the worker being secured by a lanyard to a safety or fall restraint cable. The intermediate support is secured to the fixed structure, and includes a supporting plate having a notch along the periphery thereof for receiving the safety cable, and a pair of opposing hook members positioned on opposite sides of the supporting plate. The hook members prevent the safety cable from inadvertently or intentionally moving out of the notch. The method of the present invention ensures that an end of the lanyard secured to the safety cable may be quickly and easily moved sequentially past one hook member, then the supporting plate, and then the other hook member to allow the worker to efficiently and safely move past the intermediate support.

Abstract: A process for preparing fatty fodder additives comprising mixing an emulsifier, a carrier and a fat material containing omega-3-fatty acids and selected from the class consisting of vegetable oil, animal fats, fatty acids and mixtures thereof to produce an emulsion, atomizing and drying the emulsion to produce a powdered fat and coating the resulting powdered fat with an enteric coating material thereby producing an enteric coated fatty fodder additive.

Abstract: A method of manufacturing a cutter assembly for a rotary drill bit includes the step of bonding to a carrier a cutting element which comprises a thin hard facing layer already bonded to a less hard backing layer, the backing layer having a greater coefficient of thermal expansion than the hard facing layer. In order to compensate for convex deformation of the rear surface of the backing layer, when the cutting element is heated during the bonding process, the rear surface is made initially concave at ambient temperature. Alternatively, or additionally, the co-operating surface of the carrier may be concave.

Abstract: A displacement following device comprises a slider (1) mounted on a slideway (2) for movement along a linear displacement path. A beam (4) mounted on the slider (1) is rotatable about an axis of rotation (5) at its midpoint. A pair of stops (6, 7) spaced apart along the displacement path are fixed to the slideway (2) on opposite sides of the beam (4) and project into the path of movement of the beam. A tension spring (8) has one end connected (at 10) to the slider (1) and its other end connected to a point (9) between the axis of rotation (5) and one end of the beam. The spring (8) biases the beam (4) about its axis of rotation (5) into engagement with the stops (6, 7) so as to bias the slider (1) relative to the slideway (2) into a datum position from which the slider is bidirectionally displaceable along the displacement path.

Abstract: A rotary drill bit comprises a bit body having a shank for connection to a drill string and a passage for supplying drilling fluid to the face of the bit, which carries a plurality of polycrystalline diamond preform cutting elements. In order to reduce bit whirl, the cutting elements are so disposed as to apply a resultant lateral imbalance force to the bit as it rotates during drilling and the gauge of the bit body is provided with low friction bearing pads to transmit said resultant lateral force to the sides of the borehole. Each low friction bearing pad includes an outwardly facing cavity which is connected to the passage by a choked conduit so that, in use, drilling fluid under pressure is delivered to the cavity, which thereby acts as a low friction hydrostatic bearing surface.

Abstract: A door locking device for preventing an opening of a hinged door. The locking device of the present invention includes a door jamb restraint independent of the conventional striker plate and secured to a door facing surface of the door jamb. In one embodiment, a main plate is provided independent of the door handle for engagement with the door jamb restraint. The main plate includes a central plate portion in engagement with the door jamb restraint, a first wing fixed on one side of the central plate portion for engagement with the interior room wall, and a second wing portion fixed on the opposing side of the central plate portion for engagement with the door, thereby preventing rotation of the main plate with respect to the door jamb restraint and thus preventing opening of the door. The device of the present invention is relatively inexpensive and does not operate in conjunction with the door handle or a conventional door jamb striker plate for increased versatility and ease of installation.

Abstract: An apparatus for detecting the interface between a hydrogen-containing substance and a second substance of different hydrogen content in a vessel comprising a first elongate source body containing a source of fast neutrons and having an L/D of at least about 4 and providing a substantially uniform flux density of fast neutrons radiating outwardly along the length of the elongate body, a second elongate detector body, the detector body including a slow neutron detecting substance providing substantially uniform detection of slow neutrons along the length of the detector body to provide an output proportional to the number of slow neutrons detected, the source body and the detector body being disposed in substantially parallel relationship to one another, in sufficient proximity to one another and to the vessel and in overlapping relationship to the interface whereby the output from the detector body varies substantially linearly with the change in position of the interface in the vessel.

Abstract: A sampling pump is provided suitable for pumping a discrete quantity of either a liquid or a gas per pump stroke from a flow line to a sample vessel. An operator unit drives a piston within the pump bore, and controls the stroke of the piston and thus the quantity of fluid pumped per stroke. A balanced check valve mechanism controls flow from the pump bore to the pump outlet port, and is provided within and carried by the piston. Line pressure acts on the operator end of the piston to assist the operator in driving the piston during its power stroke. A manifold may be secured to the pump body, and has a flow path therein which is in communication with the inlet port to the pump bore. The pump may also be used for injection purposes to introduce a selected quantity of fluid to a high pressure line.

Abstract: An improved fluid regulator is provided for receiving high pressure fluid and controllably outputting low pressure fluid. The regulator valve mechanism includes a regulator seat fixed to the regulator body and a regulator valve disk movable within the regulator body for sealing engagement with the seat. A spring-biased piston is provided axially movable within a piston housing in response to the low pressure fluid, and has a port therethrough. A relieving valve mechanism includes a seat formed on the regulator valve disk, and a dart member carried by the piston and having a flow passageway therethrough in fluid communication with the port in the piston. The regulator of the present invention is self relieving to ensure that pressurized fluid will continually be supplied to downstream equipment. The sensitivity of the regulator is enhanced, and the regulator is designed for low cost maintenance.

Abstract: A bent motor housing has a top end by which it is connected to the end of a drill string within a borehole and a bottom end on which a drill bit is mounted for drilling the borehole. A bend is provided intermediate the top and bottom ends for angularly offsetting the rotational axis of the drill bit relative to the longitudinal axis of the drill string to cause the drill bit to engage the wall of the borehole on one side. Furthermore a longitudinal bore provided for passage of a motor shaft extends from the top end to the bottom end of the housing and is concentrically disposed with respect to the top end and the bottom end but eccentrically disposed with respect to intermediate housing sections so as to form a stand-off portion in the vicinity of the bend for bearing against the wall of the borehole on the opposite side to that engaged by the drill bit so as to cause the angle of tilt .THETA.

Abstract: An improved rotary valve is provided with a bellows surrounding a bent shaft to create a hermetic seal and thereby prevent fluid loss from the interior of the valve body. The shaft is provided within a seal assembly housing, and has a lower end axis offset from the valve stem axis, and an upper end axis offset from the lower end axis. The bellows is fixedly secured at its upper end to the seal assembly housing and at its lower end to an end cap to prevent fluid within the cavity from passing out the seal assembly housing. An epicyclic gearing assembly is provided within the cavity and mechanically interconnects the lower end of the shaft to the valve stem. An actuator may be provided for connection with the upper end of the shaft for rotating the shaft. The activating device of the present invention may be used for rotating various members mounted within an enclosure with sealing the enclosure from the environment.

Abstract: Improved techniques are provided for improving the environment of hazardous material abatement personnel operating within an enclosed working area while conducting, for example, asbestos removal operations. A negative pressure is established within the working area by a portable air moving unit, which exhausts air from the working area to prevent hazardous material leakage. The exhausted air is filtered, a significant portion of the exhausted air is conditioned by a portable refrigeration, heating and dehumidification system, and the temperature controlled air is returned to the working area. An air diverter is provided for regulating the ratio of the discharged air to the returned and conditioned air in response to the sensed pressure level within the working area. The temperature of the working area is regulated, thereby substantially increasing worker productivity and reducing safety risks.