Abstract: The invention is an elongated valved device adapted to be coupled between a string of tubing and a well bore packer.An outer sleeve is coupled at one end to the tubing and has a movable hollow mandrel into the other end of the outer sleeve. Advancing or retracting of the mandrel is afforded by rotating the mandrel to engage grooves in the periphery of the mandrel with lugs at the end of the outer sleeve, then moving the mandrel axially with respect to the outer sleeve.An inner sleeve is locked in position within the outer sleeve and has a spring loaded flapper valve assembly at its end facing the end of the mandrel.Advancement of the mandrel forces its end (curved) through the valve assembly.

Abstract: This invention relates to an apparatus for dispensing ball-like objects and more particularly to an apparatus with a grooved longitudinally disposed member and a surrounding sleeve having a helical inwardly extending rib therein rotatably mounted around the sleeve, the objects being dispensed by the rib pushing them along the groove and out of the apparatus as the sleeve is rotated.

Abstract: The invention is an elongated tool for detachably connecting a sand screen and liner assembly to a tubing string. The tool comprises a releasing housing sleeve, a hookup nipple section which partly telescopes within the releasing housing sleeve with the telescoped end closed by a removable hookup nipple plug. A movable hollow piston having a ball valve seat at one end and a cross bore extending through its other end part fits within the other end of the releasing housing sleeve with the cross bore aligned with longitudinally extending slots in the releasing housing sleeve.The hookup nipple has circumferentially extending grooves near its upper end which each mate with an array of bores extending through the releasing housing sleeve. Ball detent elements are disposed in the bores and grooves.

Abstract: An improved pycnometer in which the sample whose volume to be measured is put in a closed chamber to which an electro-mechanical transducer is coupled. The transducer is excited at a constant frequency. The change in impedance of the transducer is then read as a function of the volume of the sample.

Abstract: The invention is a differential fill valve apparatus principally for use in treating earth wells, usually in connection with cementing a string of casing into the well bore. The apparatus, at or near the low end of the casing, has a pressure actuated slidable piston which rises as liquid is encountered in the well bore opening parts for admitting liquid into the casing until the pressure from liquid in the casing reaches a predetermined ratio with respect to the pressure in the well bore annulus.Means are provided for locking the piston in its closed position after the casing string is in place in the well, permitting the use of the apparatus as conventional cementing valve apparatus.

Abstract: A force flow valve type shipping bag including a vapor barrier ply, incorporating a valve-like sealable vent communicating between the exterior of the bag and the space between the vapor barrier ply and the inner wall plies of the bag.

Abstract: The invention is a packer cup assembly which attaches to the lower end of the mandrel in the tree saver which is itself attached to the "Christmas Tree" of a well head or the like. The assembly is tubular in configuration and comprises a metal part with internal threads at one end and a thinner walled part at its other end. The outer diameter of the lower end of the metal part is less than the outer diameter of the threaded end part in order to permit an elastomeric sleeve to fit over and extend beyond the reduced diameter end part of the metal part. The outer end of the elastomeric sleeve is flared outwardly and then tapered inwardly to facilitate entry into a string of tubing or the like. The other end of the elastomeric sleeve is bonded to the outer surface of the metal part.

Abstract: The invention comprises a roller having circumferentially extending slits through which extend blades having an outerwardly facing cutting surface. The blades are detachably mounted from a retractable bar whereby the cutting surface extends beyond the roller or is retracted below the outer surface of the roller. A pivoted protective cover assembly fits adjacent to the slitted rollers and retracts the blades when the cover is lifted away from the slitted roller. Means are provided to position the slitted roller laterally with respect to the film to be slitted.

Abstract: The invention is a positive lockout means for circuit breakers in an electrical distribution box wherein a central bar extends from top to bottom of the box between the arrays of circuit breakers. The bar has an array of bores extending into the bar from the top side of the distribution. Rod-like locking elements having a configuration which permits one end of the locking element to pass into a bore in a circuit breaker actuator while the other end is inserted in a bore in the bar to prevent movement of the actuator element so secured. Positive lockout is provided by a cover plate which is positively secured in position over the central bar.

Abstract: The invention concerns down-hole apparatus for use especially in casing cementing operations wherein a so-called string of casing is lowered into a well bore and cemented in place. The apparatus comprises an insert, disposed across the interior of the casing, containing a spring loaded flapper valve assembly which is held open by a movable valve seating member until a ball is seated in the seating member and pressure applied through the casing to the sealed valve seating member forces the seating member downward, releasing the flapper valve, and expands the lower end of the seating member as the ball is forced through it. On release of the casing pressure from above, the flapper valve closes.A plurality of the inventive devices may be placed along the casing, the ball valve sealing each, in turn, from top to bottom.

Abstract: An upper sleeve retainer for use on pneumatically driven rivet cutting devices or the like wherein a cutting chisel fits into an upper sleeve in the barrel of the device and is impacted by a driven piston. The retainer includes a sleeve which is quickly detachably secured to the outer end of the barrel and has an inwardly extending flange which extends in front of and prevents the upper sleeve from leaving the barrel. Because the outer diameter of the piston is larger than the inner diameter of the upper sleeve, both the piston and upper sleeve remain in the barrel if the device is triggered.

Abstract: Means for clamping together two flanged ends of vitreous tubing or the like in which the facing surfaces of the flanged ends are flat wherein screw adjustable strap-like clamps having an array of screw engaging slots along their length are tightly coupled around each piece of tubing near the flanged end. With the flanged ends abutting, tension members, usually springs, are coupled between the clamps. Usually each tension member has at least one end coupled to that part of a clamp which lies between two screw engaging slots.

Abstract: Apparatus and method for monitoring air to determine the presence of chloromethyl methyl ether at the part per billion level.The above compound is reacted with an alkali metal salt of an alcohol, a phenol, or a chlorophenol to form a derivative which provides suitable sensitivity when applied to a gas chromatograph utilizing a suitable detector such as a hydrogen flame detector or, if a chlorophenol reactant is used, an electron capture detector.

Abstract: Method for quantitatively determining the presence of chloromethyl methyl ether and/or bis-chloromethyl ether in a fluid.The above compounds are reacted with a reactant from the group consisting of an alkali metal salt of a lower alcohol, an alkali metal salt of phenol or an alkyl phenol, an alkali metal salt of a chlorophenol or bromophenol, an alkali metal salt of an alkoxy phenol, an alkali metal salt of a chlorinated pyridinol, and an alkali metal salt of thiophenol or a chlorinated thiophenol, dissolved in a lower alcohol, to form derivatives which provide suitable stability, specificity and sensitivity when applied to a gas chromatograph utilizing a suitable detector.

Abstract: The tester comprises basically a four wheeled carriage, a scale arm containing graduations attached to the carriage in a counterpoised condition about a pivot axis, and a rolling, round fluted cutting tool coupled to the carriage and to the scale arm. The cutting tool, as the carriage is drawn across a test surface, leaves an indented track of the cutting flutes. The width of the track marks is a function of the coating hardness and applied load.

Abstract: Apparatus for quantitatively determining the presence of chloromethyl methyl ether and/or bis-chloromethyl ether in a fluid.The above compounds are reacted in the apparatus of the invention with a reactant from the group consisting of an alkali metal salt of a lower alcohol, an alkali metal salt of phenol or an alkyl phenol, an alkali metal salt of a chlorophenol or a bromophenol, an alkali metal salt of an alkoxy phenol, an alkali metal salt of a chlorinated pyridinol, and an alkali metal salt of thiophenol, dissolved in a lower alcohol, to form derivatives which provide suitable stability, specificity and sensitivity, and then applied to a gas chromatograph utilizing a suitable detector coupled to a readout device. The apparatus is automated and controlled by timing means.