Abstract: Apparatus for applying a primer paint coating onto a pipe wherein a structure movable along the pipe forms an enclosed annular cavity about the pipe. Primer paint fills the cavity and wets the complete circumference of the pipe. The cavity is filled by means of gravity flow with the surplus primer being collected in a reservoir and pumped back to the top of the cavity. Means are provided to wipe the primer to a predetermined thickness and returns the surplus to the reservoir. A gas rich environment surrounds the paint filled cavity and wiper means.

Abstract: A framing layout tool facilitates the accurate and quick layout of framing marking for a structure. A bidirectional measuring scale provides a means for measuring and marking the location of any size door or window opening. Window and door marking tabs are also positioned along the main bar of the tool for obtaining markings for window and door openings of predetermined widths. A channel marker extends from the edge of the tool and is of a predetermined width corresponding to the width of the channel. The channel marker includes a central opening for use in conjunction with the outer stud markers for marking studs with spacings greater than the equidistantly spaced stud markers. A plurality of stud markers corresponding in width to a stud are spaced equidistantly along one edge of the layout tool.

Abstract: Impressions of the patient's upper and lower arches are prepared and a plaster of Paris model of each of the arches is cast. A wax plate is formed on each model around the palate and gingival areas surrounding the teeth. A tooth and the surrounding wax plate is removed exposing the plaster. A base, formed of fast cure acrylic material, is then formed on the exposed plaster. A replacement tooth is then placed in the base material.

Abstract: An idler guide for a rotary drilling rig has a plurality of spring-loaded floating bearings along the inside wall of a cylindrical bearing member for stabilizing and guiding the rotational and axial movement of drill pipe through the guide. The floating bearings are spring-loaded to move inwardly or outwardly along the radius of the cylindrical bearing to accommodate both new and worn drill steel pipe. The bearings are free to rotate with any resultant combination of axial or rotational movements of the drill steel. Individual bearing members may be replaced through the exterior wall of the idler guide. A floating ring in the bottom of the idler guide deflects drilling fines from entering in the gap between the inside of the guide and the outside of drill pipe.

Abstract: Explosive composition of water-in-oil, containing as a continuous phase a carbonaceous fuel and as a discontinuous phase an oxygen-releasing aqueous salt solution, the continuous phase containing a water-insoluble lipophilic viscosity index improver for the purpose of controlling the consistency.

Abstract: An apparatus for treating the edges of pre-fired brick includes an extruder for extruding a column of clay and a wire cutter assembly for severing the column into individual bricks having their longitudinal axes substantially perpendicular to the direction of extrusion. The bricks are transported to a first conveyor where they are turned and directed to a side conveyor. As the pre-fired bricks move on the side conveyor, they move in a single file arrangement with their longitudinal axes substantially parallel to the direction of movement. The upper longitudinal edges of the pre-fired brick are treated by engagement with a pair of canted rollers to give the edges of the brick an irregular appearance. The bricks are then reoriented by a pair of rotating tables which direct the bricks onto a third conveyor with the axes of the brick being substantially perpendicular to their direction of travel.

Abstract: This invention relates to automatic welding of confronting edges of two bodies between which is a groove to be filled with filler material and, more particularly, to conditioning, processing and use of control signals for automatic operation.

Abstract: A method is provided for increasing the porosity of sintered metal coatings on zirconium oxide ceramics comprising the placing of the metallic coated zirconium oxide part in an acid solution, heating the solution to a temperature below the boiling temperature of the acid, maintaining the part in the acid solution for a sufficient period of time to increase the porosity to a predetermined amount, and removing the part from the acid solution.

Abstract: An internal mandrel (10) is disclosed which is used for supporting the inner wall (30) of a pipe (12) during bending. The internal mandrel includes a urethane plug (31) which is compressed between the piston (60) of a hydraulic cylinder (56) and an end plate (36). This expands the urethane radially outward into contact with the inner wall (30) of the pipe to support the pipe during bending. Resilient steel strips (88) can be mounted on the exterior surface of the urethane plug (31) at the inside bend of the pipe to increase the effective wall thickness of the pipe at the inner bend to reduce the likelihood of deformation during bending. In a second embodiment, internal mandrel (200) includes an annular urethane plug (204) positioned between a resilient cylinder (202) and the inner wall of the pipe (12).

Abstract: A bridge plug for use in plugging a well at a subterranean location and adapted to be set in place by insertion through a tubing string. The bridge plug comprises an elongated vent tube supporting upper and lower petal basket structures, each of which comprises a plurality of petal leaves movable between a retracted position and an expanded position. In the expanded positions the petal leaves for the upper and lower baskets form conical configurations which face upwardly and downwardly respectively. Upper and lower fabric bags cover the respective petal basket structures respectively and extend over the inner and outer surfaces of the petal leaves. Each of the petal basket structures are further provided with conically shaped liners formed of an impermeable material inside the bags and interposed between the inner surfaces of the petal leaves and the conforming portions of the bags. The liners may be formed of an adhesion-resistant material such as fiber-glass fabric coated with a polytetrafluoroethylene.

Abstract: An array of integrated photosensitive devices is used to lift an image of a printed character or symbol from a document or other surface, process the image to enhance character information and referencing it against a self adjusting threshold to produce a black/white video output, in serial form, representative of the image sensed by the array. Charge transfer devices are used extensively throughout on a single integrated circuit to provide a complete image processing video device on a single integrated circuit chip.

Abstract: A medical claim verification and processing system reads a medical information card (MEDICARD) to determine a patient's background medical and insurance information. The validity of the card is rapidly determined by accessing a central brokerage computer. A local service provider enters into a local terminal the medical and MEDICARD information services provided or to be provided to the patient by using a patient service code and transmits this information to a central brokerage computer. The central brokerage computer converts the patient service code input by the service provider or MEDICARD into a particular service code for the patient's insurance carrier. This service code is then utilized to determine the insurance claim payment for that particular patient service. The claim payment amount for the medical service is then transmitted back to the local entry terminal for use by the service provider and patient.

Abstract: An improved oil well drilling rig structure (10) is provided. The drilling rig structure (10) includes a base (32) for placement on the ground at a well site. The base (32) includes first and second ends (32a, 32b). A drill floor (14) supported on a floor box (12) having first and second ends (12a, 12b) is disposed parallel to and adjacent the first end (32a) of the base (32). The floor box (12) is coupled to the base (32) by spaced apart parallel legs (76, 78) each pivotally attached between the upper box (12) and the base (32) for elevating the floor (14) from a low position adjacent to the first end (32a) of the base (32) to an elevated position medially between the ends (32a, 32b) of the base (32) and located above the base (32) by rotation of the legs (76, 78) towards a vertical position. The structure (10) further includes a tensile link (40) having first and second ends (40a, 40b).

Abstract: The invention provides a turbocharger (20), compressor (170) and turbine (172) rotors mounted on a shaft (160) supported by ball bearing assemblies (162, 164) such that the compressor rotor (172) and turbine rotor (170) are overhung to one side of the bearing assemblies with the turbine rotor separated from the bearing assemblies by the compressor rotor. The turbocharger (20) includes a turbine nozzle area (230) having a plurality of nozzle vanes (234) spaced circumferentially about the turbine rotor and in the nozzle area through which exhaust air from the engine is received into the turbine. A control linkage (228) is positioned intermediate of the compressor rotor and turbine rotor and controls the position of the nozzle vanes to vary the flow of exhaust gases to the tubine rotor. A concentrically positioned cylindrical module (60) is supported within the compressor inlet by struts (62) extending from the inlet wall (64) to the module (60) thereby dividing the inlet into more than one inlet passage.

Abstract: A metal detector is disclosed which has a transmit coil, a receive coil, and circuit means for detecting metal objects due to a change in the magnetic coupling between the coils. Circuit board arrangement techniques are disclosed which enable the close placement of the transmit and receive coils and the circuit board, thereby allowing packaging of the metal detector in a small package. A low battery voltage indicator circuit is provided to warble an audio indicator signal to indicate sufficient battery voltage. In the event the battery voltage drops below a certain level, the warbling of the indicator signal ceases and a steady tone is generated thereby indicating a low battery voltage condition.

Abstract: A filter casing for an air conditioning system includes exterior walls (1, 2, 2', 3 and 4) together with a front cover which comprises a plurality of doors (34, 35, 36, 37 and 38). The walls (1, 2, 2', 3 and 4) and doors (34, 35, 36, 37 and 38) form the casing which is divided into two compartments by parallel partitions (9, 9'). Air is drawn through an intake opening (39), through a channel (10) and sequentially passed through a temperature control apparatus (14), a filter (15) and a fan (16). The air is then transmitted through a fan outlet duct (20) to a channel (22). A plurality of absorption filter elements (23) receive the air from channel (22) and serve to remove contaminating agents. After the air is passed through the filter elements (23), it is directed into passageways (40 and 41) which are open to a rear space (42). From the rear space (42) the filtered air is exhausted from the casing through an outlet (30).

Abstract: A system for attaching furring adjacent a column includes a corner clip (140, 142) having a first leg (160) for attachment adjacent a column and a second leg (162) extending from the first leg. The second leg (162) extends substantially longitudinally of the column. The clip may be attached directly to the column or to the ceiling or decking adjacent the column. One end of a corner angle (150) is engaged over the second leg of the clip. The opposite end of the corner angle is engaged over the corresponding leg of a similar clip. The corner angle is then plumbed by moving the second end of the angle and clip, and the clip is attached to the decking or ceiling to maintain the angle plumb. Furring (G) is attached to the corner angle to cover the column.

Abstract: Phosphoric acid is produced by the wet process from phosphate rock containing fluochlorapatite. The rock is ground in a crusher (10) to a size such that from about 50% to about 90% by weight will be passed by a -200 mesh U.S.S. sieve before being passed into a digestor (14) where it is mixed with sulfuric acid and recycled phosphoric acid to form a slurry. A suitable reductant such as sulphur dioxide is added to the slurry to maintain the oxidation-reduction potential in the range from about +150 mv to about +750 mv. The gypsum by-products are then removed from the slurry at filter (16) and a portion of the acid is recycled to digestor (14). The remaining acid is either concentrated and further processed to make fertilizers or is further processed via path (20) to remove aluminum and/or iron impurities. Select amounts of fluoride and sodium containing compounds are added to the acid in a stirred reactor (30) to cause precipitation of aluminum, principally as Na.sub.2 AlF.sub.5.

Abstract: A tool (20) for washing the perforated zone of a well casing in an oil or gas well includes a tubular mandrel (24) having a flow passage (26) with means for connecting one end of the mandrel to a drill string (160) and the second end to a flow blocking valve (162). The mandrel (24) has a plurality of apertures (42) through its sidewall. A first and second radially expandable packer (64, 132) completely encircles and is carried on the mandrel at spaced positions. An outer sleeve (100) surrounds the mandrel between the packers and defines an annular chamber (116) between the sleeve and mandrel. The sleeve has apertures (104) therethrough having a combined area less than the combined area of the apertures (42) through the mandrel. First and second annular pistons (74, 100) are carried within the annular chamber (116) having one face communicating with the annular chamber and an opposite face engaging, respectively, the first and second packers.