Abstract: A connection for connecting an end hub (22) of a valve (10) to the flange (32) of an associated conduit (26). A bolting ring (36) has a threaded end portion (64) adjacent the valve (10), and a cylindrical smooth end portion (68) remote from the valve (10) extending radially inwardly from the threaded end portion (64). A shoulder (70) between the smooth portion (68) of the ring (36) and the threaded portion (64) acts as a stop to accurately position the bolting ring (36) onto the hub (22). Upon connection of the assembled valve structure to adjacent conduits (26), tensioning of the threaded studs (42) results in torque loads exerted by the smooth surface (68) on the locking ring (36) against the smooth surface (60) on the hub (22) for transmitting loads to the hub (22) as shown particularly in FIG. 5.

Abstract: Apparatus for electrically generating hydraulic shock waves in a fluid bearing formation (14) of a bore hole (10) including a tool (16) having an upper electrode (42) and a lower electrode (46) forming a spark gap therebetween. The tool (16) has an upper end portion (40) comprised of a plurality of sections (40A-40E) threaded to each other in end to end relation and an armored electrical cable (18) having an outer metal sheath (34) is anchored to the uppermost section (40A). The tool (16) is particularly adapted for fitting within a casing having a four inch diameter and the electrodes (42,46) have diverging planar end surface portions (84) coated with tungsten carbide to provide wear resistant surfaces.

Abstract: The method and apparatus for forming an encapsulation or encasement about a structural member that is particularly well suited for use in a marine environment is disclosed. A two component polymer system for protective and repair encapsulation is pumpable in two separate streams to the location of the structural member to be encapsulated. The two reactive components are combined in a static mixer immediately prior to being injected within the surrounding translucent jacket. By combining the reactive components immediately prior to use, premature set up is avoided and the resulting grout may be directed to flow upwardly in the jacket for enhancing final properties. By suitable coloring of the components, visual monitoring of the final mxing and distribution in the translucent form or jacket of the encapsulation material may be monitored. A field test for determining bond strength of the encapsulation polymer to the structural member is also disclosed.

Abstract: A rotary drill bit (10) having a roller cutter (28) retained on a journal (24) by an externally threaded retainer ring (52) mounted within an annular groove (48) in the journal (24). The radii (R1, R2) formed at the inner and outer corners of the groove (48) are designed by suitable formulas to provide adequate strength for the journal (24) including the flange (50) adjacent the groove (48).

Abstract: An apparatus and method for heating hollow bolts (20) mounted in aligned openings (18) of a pair of members (10,12) to be connected together. A conduit (42) supported by a cylindrical body (40) from the end (29) of the bolt (20) is inserted within the bore (34) of the bolt (20). A fired stream of heated fluid from a gas torch (90) flows through the conduit (42) thereby to heat the bolt (20) for providing sufficient elongation for predetermined tightening or loosening of the associated nut (30). One embodiment (FIG. 1) utilizes a hollow bolt having a blind end central bore (34). Another embodiment (FIG. 3) utilizes a hollow bolt (26A) having a central bore (34A) extending through the entire length of the bolt (26A).

Abstract: A rotary drill bit (10) has three roller cutters (20A, 20B and 29C) mounted thereon for rotation with a plurality of cutting elements (26) arranged in concentric annular rows (28A, 28B, 28C, 28D) thereon. A high velocity drilling fluid is discharged from nozzle orifices (40, 42, 52) and the orifices are sized and positioned so that more hydraulic energy is directed against the cutting elements (26) in the gage row (28D) than against the cutting elements (26) in the remaining rows (28A, 28B, 28C). The drilling fluid impinges the cutting elements (26) on the leading side of the roller cutters (20A, 20B, 20C) immediately prior to engagement of the cutting elements (26) with the bore hole bottom (30) and then sequentially strikes the bore hole bottom formation at or closely adjacent the juncture (35) of the horizontal bottom portion (32) with the vertical side portion (34).

Abstract: A reinforced concrete building structure (10) and method of forming, including first forming a steel framing form (18) of cold formed channel shaped structural steel members of a thickness between 1/32 inch and 3/8 inch including vertical framing members (19,20,21,22) and horizontal connecting members (30A-30E), then connecting a backing form (74) by connectors (76) to flanges (26) on only one side of the vertical framing members (19-22), and only adjacent the lower side of the horizontal connecting members (30A-30E) spaced at least 3/4 inch from the steel framing members. Concrete is then applied pneumatically against the backing form (74) for the vertical side walls (12) with the channel shaped framing members (19-22) comprising the primary steel reinforcing and with opposed flanges (26,27) being covered outwardly by concrete at least 3/4 inch in thickness. The steel framing for a roof of a relatively large span is shown in FIGS.

Abstract: An electrophoresis machine is disclosed in which after a microporous support strip and a sample plate are placed in the machine, all electrophoresis processing, scanning and densitometer functions are automatically performed under computer control. The machine includes apparatus for automatic pipetting of liquid samples from the sample plate to the surface of the support strip, apparatus for applying electrophoresis current to the strip while simultaneously cooling it, apparatus for applying and spreading fluorescent staining reagent to the strip, and apparatus for incubating the strip and subsequently drying it. Mechanical aligning apparatus is provided for precisely aligning pipettes with application wells on the sample strip. Electrode bars and reagent spreader bars are provided to apply electrophoresing current to the strip and to spread reagent dumped onto the strip after electrophoresis. Circular indentations as well as rectangular indentations are provided as application wells on the sample strip.

Abstract: A treadmill is disclosed having a belt system carried by a platform structure. The platform structure is pivotally mounted at its rear end to a base structure. The platform is supported at its forward end by a shock absorber/spring system which provides a damped resilient response of the belt and platform when a person's foot lands during running or walking. Carrying the belt system by the platform structure enables the endless belt of the belt system to be maintained closely above the platform even when a runner's foot lands on it with heavy impact. The support of the platform immediately below the belt eliminates lateral slack in the belt which could possibly result in injury to a walker or runner due to an uneven landing surface.

Abstract: A cutting tool (10) for removing members downhole from a well bore and adapted to be inserted within a well from the upper end (12) of the casing (14). The cutting tool (10) includes a plurality of elongate blades (32) on the cylindrical body (18) of the cutting tool (10). Cutting elements (42) of a predetermined size and shape are arranged in a symmetrical predetermined pattern on each blade (32) in side-by-side relation in a plurality of predetermined tranversely extending rows and a plurality of predetermined generally vertically extending columns. The cutting elements (42) in adjacent transverse rows for each blade (32) are staggered and have different concentric cutting paths. The cutting elements (42E) in corresponding transverse rows on adjacent blades (32A, 32B) are staggered and have different concentric cutting paths. The blades (32A, 32B) of the embodiment of FIGS.

Abstract: A method of machining a journal (14) on a lug (10) for a roller cutter drill bit in which the stand (22) holding the lug (10) is fixed and a cutting tool (26) is mounted on a holder ( 24) over the journal (14) for rotating about the journal (14). Two separate machining procedures for the journal (14) are provided with each machining procedure employing a separate cutting tool (24). A rough truing cut is made with a first cutting tool (24) and a final finish cut is made with a sharp second cutting tool (24) having cutting surfaces unused except on the finish surfaces.

Abstract: A valve seat tool (46) and method for removing and inserting a tubular frusto-conical seat (26) from the seat cavity (22) of a valve chamber (20) in a valve body (12). The tool (46) has a laterally extending protuberance (60) on its inner end adapted to be received within a port (38) of the seat (26) for prying the seat (26) loose upon a prying action of the tool (46). An annular shoulder (56) on the tool (10) engages the outer annular surface (42) of the seat (26) for providing a pivot axis.

Abstract: In accordance with an illustrative embodiment of the present invention, an expansible chamber device includes a piston movable within a cylinder, a head on the cylinder having intake and exhaust ports, a normally-open intake valve for closing the intake port automatically when the flow rate or velocity of a working medium entering the cylinder reaches a predetermined value, variable restraining means for inhibiting closing of the intake valve in response to flow, an exhaust valve for preventing escape of working medium from the cylinder until cylinder pressure is reduced to a set level, spring means for opening the exhaust valve at that level, and means operable near the top-dead-center position of the piston for automatically opening the intake valve and for closing the exhaust valve to enable the cycle to repeat. A unique system for controlling the variable restraining means, as well as methods for regulating the flow or working medium through said valves, also is disclosed.

Abstract: A cutting tool (10) for removing members downhole from a well bore and adapted to be inserted within a well from the upper end (12) of the casing (14). The cutting tool (10) includes a plurality of elongate blades (32) on the cylindrical body (18) of the cutting tool (10). Cutting elements (42) of a predetermined size and shape are arranged in a symmetrical predetermined pattern on each blade (32) in side-by-side relation in a plurality of predetermined transversely extending rows and a plurality of predetermined generally vertically extending columns. The cutting elements (42) in adjacent transverse rows for each blade (32) are staggered and have different concentric cutting paths. The cutting elements (42E) in corresponding transverse rows on adjacent blades (32A, 32B) are staggered and have different concentric cutting paths. The blades (32A, 32B) of the embodiment of FIGS.

Abstract: A locking device (22) for an automobile (10) mounted externally on the automobile frame (12) has an elongate tubular support (24) in axial alignment with a front wheel (15) of the automobile. A locking bar (50) is mounted in telescoping relation witin the tubular support (24) for relative sliding movement between a retracted inoperable position as shown in FIGS. 3 and 4 and an extended operable position as shown in FIGS. 1 and 2. The wheel (15) is turned prior to the extension of the locking member (50), and upon extension the locking member (50), extends alongside the wheel (15) to block return of the wheel (15) to a straight position and block movement of the automobile (10) in a straight path. A lock (42) locks the locking bar (50) in extended position and maintains the locking bar (50) in such locked position upon manually unlocked by a key.

Abstract: In accordance with illustrative embodiments of the present invention, a side pocket mandrel includes an orienting sleeve having guide surfaces that lead to a longitudinal slot which forms, together with an adjacent longitudinal recess in the mandrel, a T-shaped channel that cooperates with projections on the arm of a kickover tool to precisely align the gas lift valve with the receptacle bore in the mandrel. The kickover tool includes an assembly of pivotally mounted upper and lower arms with the lower arm being pivoted to the tool body. The lower arm includes a locating finger and transversely extending projections that engage and slide in a T-shaped channel of the mandrel to achieve precise alignment of the valve with the receiver bore.

Abstract: Disclosed is a method making use of a video camera, a programmed computer and a numerically-controlled machine-tool with three displacement axes. Particular transitions of the gray levels of the digitized output signal of the camera are sought. Two contiguous binary signals thus produced define a primitive segment of a line to be engraved. The directing parameters of the line segments, normalized in accordance with the displacement step of the machine, are produced and the successions of digital signals controlling the horizontal movement of the machine are deduced therefrom. The engraving depth control signals are renewed with each new engraving pass.Application to the customized production of jewelry and object-words.

Abstract: A reinforced concrete building (10) is formed from a plurality of prefabricated modules (24) which may be assembled off site and then transported or shipped to the building construction site for installation and application of concrete (36). Each prefabricated module (24) includes a rectangular frame (40) having channel-shaped frame members 42, 44, 46, and 48 which form the ends and sides of the frame. An insulation layer 62 is mounted within the frame (40) in spaced relation to one side frame member (48). A channel-shaped concrete column form (72) is secured between the insulation layer (62) and the adjacent side frame member (48) to close the frame (40). A wire mesh layer (78) is secured to the outer surface of the frame (40) with an overhanging side portion (84). The prefabricated module (24) when shipped to a construction site receives reinforcing bars (30, 32) and concrete (36) is pneumatically applied for forming a reinforced concrete wall (16).

Abstract: A roller cutter (28) for a rotary drill bit (10) and method of making, utilizing an ion nitriding hardening process for the external surface (42) and the internal bearing surfaces (33, 34, 38) in the central cavity (30) of the roller cutter (28). The roller cutter (28) is made from a through hardenable steel and the ion nitrided hardened layer (77) has a total thickness less than around 0.030 inch. Hardened layer (77) has a relatively thick inner stratum (80) and a relatively thin outer surface stratum (78). The outer stratum (78) is formed of Fe.sub.4 N having a thickness no greater than around 0.0004 inch to form an outer surface which is ductile and has a relatively low friction coefficient.