Abstract: The present invention utilizes a centralizer having a plurality of segmented stress risers. The segmented stress risers are designed to allow sufficient strength to maintain the tubing in a centralized downhole location, while to allow for the stress relief grooves to be sheared off when a wash pipe or similar device is utilized to clean out any unwanted build up of material or deposits in the borehole. Once the segments have been sheared off they can be circulated out of borehole.

Abstract: An improved toothbrush design incorporating a bristle head including a fixed obtuse angle. This toothbrush is designed to be the sole implement needed for dental hygiene. The angle in the bristle head is formed by intermediate and distal segments which each have a straight longitudinal center axis. The intermediate segment is connected to a neck which in turn, is connected to a handle, each also having a straight longitudinal center axis. The neck, handle, and intermediate segments are contiguous and co-linear so as to provide superior cleansing of the lingual, buccal, embrasure, and distal aspects of the teeth and gums.

Abstract: An apparatus and method for removing fish from a well, said apparatus including a top sub with upper and lower ends, the upper end adapted to be connected to a drill string, a grapple sleeve connected to the lower end of the top sub and a grapple, which in the preferred embodiment incorporates grapple fingers so as to externally engage and grasp a fish in a well slidably mounted within the grapple sleeve. The grapple is mounted to the top sub and extends out of and into the grapple sleeve such that once the fish is engaged the grapple may be withdrawn into the grapple sleeve, which in turn allows for the maintaining of a constant force on the grapple and fish engaged therein. The method of the present invention includes running into the well a drill string having a grappling tool attached thereto, locating the fish by making contact with the grappling tool, engaging the fish with the grapple, and removing the fish from the well.

Abstract: A hydraulic release tool used above any work string which includes an elongated mandril and a releasing means axially and slidingly mounted within the mandril and having an internal stabilizing means and/or external/internal fishing/neck capable of releasing a male conversion means and/or external/internal fishing neck. The male conversion means and/or external/internal fishing neck is disposed at the lower end of the hydraulic release tool, and is released when the work string tools become stuck, thus allowing the stuck work string tools to become relieved by any conventional standardized overshot fishing tool; while also allowing the retrieval of the tubing above the released hydraulic release tool.

Abstract: An apparatus for the collection of fuel spillings that originate from fuel dispensing apparatus, including gasoline and diesel fuel service station pumps which incorporates a filtering system for preventing solids from accumulating in the bottom of the spill collection pan and allowing fill material to be placed between the collection reservoir of the spill collecting pan and the fuel pumps which contributes to the fire prevention features of this apparatus.

Abstract: A compact, easily used, high quality sealing plug for use with ultrasonic testing equipment which incorporates a single annular body with an indented diaphragm portion, two lips, an annular vertical wall extending upwardly from said indented diaphragm portion of said single circular body with two annular lips extending outwardly therefrom, one at the upper end of said annular wall and the other therebelow so that when said seal is in use, the upper lip will maintain a position above the insulation material in which the seal is placed, while the lower lip will be below said outermost surface, both lips counteracting each other to maintain tension therebetween and the present invention from becoming unintentionally dislodged from its location. Alternative embodiments of the present invention are also disclosed which include alternative lip arrangements for alternative sealing needs and desires.

Abstract: This invention relates to the method and apparatus for locating and indicating collars and tubing ends through the use of a locator capable of repetitive use in a number of runs downhole in any given tubing situation. Specifically, this invention relates to a series of compressive springs and bows protruding radially outward from the locator and coming into contact with the inner bore of the tubing, thereby indicating upon contact with the collar or tubing end when run downhole. Therefore, this invention relates to a new and improved tubing end locator capable of running a number of times downhole to locate collars and tubing ends without the necessity of removal of the tubing end locator uphole and re-working or re-tooling. Alternatively, this locator may be used as a centralizer to center any object within the tubing that is connected to the locator.

Abstract: This invention discloses a method which utilizes an improved spotting fluid composition to release a stuck drill string in the bore hole of an underground formation employing an aqueous drilling fluid, the improved composition used in contacting the mud cake which has been deposited on the well bore face against which the drill string has become stuck, the improved spotting fluid composition comprising of one or more carboxylic acids with specific chemical and physical properties. The acid or acids of choice must be used in the acid form and must have a pKa value maximum of 6.5, ambiant temperature water solubility minimum of 0.5 moles per liter and must generate a maximum pH of 4.0 in water at ambiant temperature.

Abstract: A hydraulic release tool used above any work string which includes an elongated mandril and a releasing means axially and slidingly mounted within the mandril and having an internal stabilizing means capable of releasing a male conversion means. The male conversion means is disposed at the lower end of the hydraulic release tool, and is released when the work string tools become stuck, thus allowing the stuck work string tools to become relieved by any conventional standardized overshot fishing tool; while also allowing the retrieval of the tubing above the released hydraulic release tool.

Abstract: The present invention comprises a lightweight, portable, adjustable, reusable, preassembled, hydraulic expandable shoring shield for providing safety to personnel working in below-grade excavations. The Shoring shield comprises specially designed solid aluminum extruded sheeting sections forming the walls, each mounted with a top cap and lower skid, the walls are provided with a static expandable telescoping structural framework for holding the walls opposed, and also are provided with hydraulic cylinders for expanding the space enclosed between the walls, the framework and cylinders thus cooperate in combination with an armored manifold for routing fluid to the cylinders.

Abstract: The problems associated with combining fuel blending and vapor recovery functions in a fuel dispenser are substantially overcome by a casting and method which provide for not only fuel blending and dispensing, but also vapor recovery. The casting and method of the present invention are adapted for use with a coaxial hose having a small diameter inner hose for dispensing fuel and a larger diameter outer hose defining an annular vapor recovery passage between the inner and outer hoses. The casting of the present invention has first and second product inlets intersecting at a mixing or blending chamber which empties into a single product outlet. As such, blending occurs within the casting and the product output can be either of the first or second products, for example, high or low grade unleaded fuel, or an intermediate grade blended fuel product produced by blending selected volumes of the first and second products.

Abstract: This revetment system and device maybe employed in controlling any environmental erosion comprising a matrix of interlocking blocks stabilized through a plurality of openings or any other securing device may pass therethrough.

Abstract: A leak repair clamp for pipe and pipe flanges providing a segmented frame adapted to receive interchangeable annular segmented inserts. All of the inserts provide for interlocking connection with the frame segments but each insert is adapted to fit around one particular diameter cylindrical surface out of a range of different diameter cylindrical surfaces. By selecting particular sized inserts, a single frame can accommodate a wide range of different diameter pipes and pipe fittings. When the insert segments are interlocked into the frame segments, the frame segments are then integrated by bolting threaded studs through flanges to form a unit, which in combination with two interlocked inserts is fastened around and against the cylindrical surface. Thrust restraining set screws are provided to prevent movement of the metal frame relative to the cylindrical surface the frame is fastened around and against.

Abstract: An explosive charge carrier is provided which is lowered into a well pipe casing. The carrier includes wear plates that slide along the inner diameter of the pipe and which are biased against the inner wall of the well pipe casing. A string of explosive charges having a density of up to six charges per foot are mounted between disks of the carrier which are separated by 12 inches. Spaced about the periphery of the separated disks are a maximum density of six strings of charges separated by 60.degree. for 36 explosive charges. Alternately, four strings of charges may be spaced about the periphery of the separated disks at a spacing of 90.degree. for 16 explosive charges.

Abstract: An apparatus for making up or breaking out of two members having mating threaded connections, such as pipe joints or bolts for avoiding undesirable transverse forces relative to the two members during tightening (or loosening), thereby insuring the connection is made up (or broken out) by essentially pure torque loads.The apparatus includes a power-driven lead tong, a back-up tong, a load cell which cooperates with either tong to produce a torque measurement and an interconnecting frame and isolation apparatus which eliminates transverse forces relative to the two threaded members. The power-driven lead tong rotatingly drives the first threaded member about its axis either clockwise or counterclockwise, as required. The back-up tong secures the second threaded member against axial rotation in response to the rotation of the first member.

Abstract: An automatic transmission having a plurality of driving gears which are individually and selectedly placed in driving engagement with a drive shaft dependent upon the speed of rotation of the drive shaft. The method of automatically engaging and disengaging the drive coupling between a drive gear and the drive shaft is such as to permit the drive shaft to free wheel whenever the rotation of the drive gear is retarded or stopped. The releasable coupling is achieved by centrifugally actuated pawls which selectedly engage in detent notches about the inner diameter of the drive gears and which pawls automatically retract and disengage from these notches when the drive gears are retarded or stopped.

Abstract: A pelletizer blade for use with an underwater extruder-pelletizer is disclosed which includes an impeller surface that keeps the water away form the die face when cutting to prevent uneven cooling of the die face and extruded material. The blade includes a solid rectangular body having an impeller surface extending therefrom and normal thereto. The impeller surface is at a slight angle in the direction of rotation and includes a cutting edge on the side mounted adjacent to the die face.