Abstract: A method of upgrading the area below a dispenser to contain accidental release harmful materials from contaminating the soil below grade without repiping, electrical changes, or concrete disruption.

Abstract: A multi-blade mower deck having a center right and left blade chambers, which are partially connected to each other, each blade chamber including a rotary mounted cutting blade with lifting sails thereon for rotating and lifting the air into each blade chamber, a front skirt defining portions of said blade chamber; a continuous rear skirt wrapping around rear portions of each of said blade chambers; and a fan chamber positioned above the cutting deck and concentrically aligned over the center blade chamber and having an opening into the center fan chamber including concentrically mounted impeller blades for driving air and clipping from the fan chamber through a exhaust passage positioned over the cutting deck.

Abstract: An adjustable grading device attaching to a vehicle rear towing hitch having a grading blade for grading or snow removal and integrated wheels for transport.

Abstract: A boom mounted cutter drum assembly of a continuous mining machine includes a center drum section, a pair of intermediate drum sections, and a pair of end drum sections. Spray nozzles on the cutting elements of the cutter drum assembly phasingly direct liquid spray at the mine face as mine material is dislodged to suppress dust and frictional ignition. Liquid for the spray nozzles is supplied on the mining machine through stationary annular housings positioned between the intermediate drum sections and the end drum sections. Water is conveyed through passageways in the annular housings to corresponding passageways in a sealing and valving assembly located in the end drum sections having stationary and rotating components. The gear case is surrounded on one side by a cat seal and on the other side by a lip seal to prevent liquid leakage from flowing into the gear case.

Abstract: A wellbore motion control apparatus for controlling the motion of a tubular wellbore string (in one aspect with an additional item and/or apparatus connected thereto) in a wellbore extending from a surface down into the earth has been invented which has, in one aspect, a central mandrel connected to the tubular wellbore string, a housing with a hollow interior and fluid therein, at least one fluid passage apparatus disposable in the hollow interior and having a fluid flow channel extending therethrough, and the at least one fluid passage apparatus secured to the central mandrel, the housing surrounding the central mandrel, the at least one fluid passage apparatus disposed for movement in a chamber defined by an inner surface of the housing and an outer surface of the central mandrel, the at least one fluid passage apparatus positioned within the chamber so that fluid therein is flowable therethrough permitting movement of the fluid passage apparatus within the chamber and thereby controlling movement of the m

Abstract: An artificial wave generating device employs an axially mounted vessel that is divided into two substantially equal chambers. The chambers are each separated by a planar member which extends from end to end and side to side of the cylindrical vessel. The dividing plate is adjusted to be at an angle such that gravity automatically rotates the device when the upper chamber is completely filled with water and a brake mechanism is released.

Abstract: An apparatus for enhancing production from a wellbore hole may include a body member having at least one cutting assembly. Each cutting assembly may have an upper, middle, and lower cutting arm. The cutting arms are hingedly connected to one another. An upper end of each upper cutting arm is hingedly connected to the body member. A lower end of each lower cutting arm is hingedly connected to a corresponding beveled attachment that is slidably received within a corresponding beveled groove in the body member. The body member includes an interior longitudinal bore in fluid communication with a jet nozzle that is located beneath each cutting assembly. The apparatus is connected to a drill string. As the drill string is rotated, each cutting assembly is moved to a fully-deployed position under centrifugal force, thereby enlarging the wellbore hole. Drilling fluid may be pumped into the apparatus to generate hydraulic power to carry loose cuttings to the surface.

Abstract: A retainer clip adapted to engage a recess in a shank of a cutting tool for securing the cutting tool to a support block. The retainer clip includes a clip body having first and second end portions and at least three protruding portions disposed between the end portions. The protruding portions are adapted to extend beyond the shank when the retainer clip is engaging the recess.

Abstract: A block for use in a revetment system comprising a plurality of blocks arranged to form a mat. The block has a top surface, a bottom surface and first and second opposed side surfaces that extend between the top and bottom surfaces, and third and fourth opposed side surfaces extending between the top and bottom surfaces and the first and second side surfaces. The first and second opposing side surfaces have a mating recess and projection, such that a recess on a first side surface mates with a projection on a second side surface of an adjacent block in a revetment system. On each of the third and fourth sides is a channel and two interlocking tips disposed on either side of the channel. The interlocking tips of a third or fourth side of one block are adapted to fit into the channel of the third or fourth side of another block. The channel is configured so that there is the possibility of lateral movement when the blocks are configured into a mat.

Abstract: On a roadbed layer (4) is formed a cushion layer (5) of 50 mm to 200 mm in thickness which is formed by using elastic chips alone or in mixture with sand, each elastic chip being formed of elastic material and having a size of 7 mm to 0.05 mm, preferably 2 mm to 0.5 mm and a specific gravity of 1.8 to 3.5. The cushion layer (5) contains elastic chips of 3 wt % or more. The elastic chips are formed by mixing a material selected from the group consisting of synthetic rubber, natural rubber and synthetic resin with a specific gravity adjusting material of inorganic powder having a specific gravity of 3 or more.

Abstract: The present invention provides an apparatus and method of producing a stream of hydrocarbons and water from a wellbore and separating the stream into a hydrocarbon-rich stream and a water-rich stream that can be reinjected into the wellbore from which it was produced. The method involves producing a production stream from production tubing in the wellbore to a separator located at least partially above the wellbore, separating the production stream into a water-rich stream and an oil-rich stream, reinjecting the water-rich stream into the wellbore from which it was produced; and maintaining separation of the water-rich stream from the production stream.

Abstract: A hard facing for an agricultural machine blade which contains hard particles of 40 to 100 .mu.m in particle size and a hardness of greater than 1400 HV in a matrix with hardness of 500 to 800 HV.

Abstract: A ditch trenching device is adapted to be connected to earth moving equipment that use buckets. A dirt port is dimensioned in a lower portion of a bucket. A trencher is attached to the dirt port and is defined by two side members each with a front, back, top, and floor that are spaced apart the width of the dirt port; a floor member with a distal end is attached to the floors; and a back member is attached to the backs. There is an acute angle between the front and floor. A first cutting edge is placed at the distal end and a second cutting edge is connected to the front by the floor.

Abstract: A method and apparatus for raising concrete members and maintaining the members in a raised position. The method and apparatus may be utilized for raising or leveling flat slabs such as sidewalk sections, driveways and patios or for raising sunken sections of curbs and gutters, and the apparatus includes a portable mud pump to provide grout or mud under the raised members for maintaining same in the raised position. The method is carried out by attaching the sunken member to an apparatus including one or more lifting jacks, raising the member by the jacks, and at least partially filling the cavity under the member with a grout or mud. The portable mud pump, which includes a limit switch controlled double-acting air driven piston, is connected to a mud or grout supply (tank) having a check valve, and withdraws mud from the tank during an intake stroke and forces the mud, during a power or output stroke, into a cavity under a raised concrete member.

Abstract: A system for relieving pressurized fluid entrapped in a annular space between a casing (12) and the surrounding wall (11) of a well bore hole (10) during deployment of a packer exterior (14) of the casing (12) for sealing engagement with the wall (11). When packer (14) is inflated in a zone (17) where fluid is entrapped, such as an intermediate packer between two previously inflated packers (13, 14), the squeeze pressure developed by the inflating packer (14) has been found to be sufficient to prevent effective and lasting sealing of the intermediate packer (14). The present system includes a valve mechanism (35) which is activated by the pressurized fluid providing for inflating the packer (14) to open a passageway (90, 94, 91) to bleed the entrapped fluid into the casing (12) and to then close the passageway (90, 94, 91) as inflation of the intermediate packer (14) is completed.

Abstract: A drag-type drill bit for drilling holes in subsurface formations comprises a bit body having an end face and a shank for connection to a drill string, a number of blades upstanding from the end face of the bit body and extending outwardly away from the central axis of rotation of the bit, a number of cutters mounted on each blade, and a number of nozzles in the bit body for delivering drilling fluid for cooling and cleaning the cutters. The blades include primary blades which, at their outer ends, are spaced apart around aperipheral gauge portion of the bit, and secondary blades which are spaced circumferentially between adjacent primary blades, each secondary blade having an outer end which terminates at a location inwardly of the gauge portion of the bit.

Abstract: A riser arrangement increases the stability and/or decreases sensitivity to vortex induced vibration of risers of a riser system including steel tubular lines, SCRIBS and flexible hose risers leading to a floating storage/production vessel. A cross-link is placed between two or more steel tubular lines in order to enhance the stability of the riser system. Devices are coupled to the steel tubular lines for increasing their tension in order to increase the natural frequency of vibration in order to reduce sensitivity to vortex induced vibration.

Abstract: A method for underpinning a building comprises arranging at least one elongated supporting element below and substantially parallel to the foundation of the building. A whole side wall of the building may thus be underpinned in a single operation without unnecessarily weakening the existing underground. By coupling a plurality of elongated supporting elements, a kind of large-surface foundation that securely supports the building can be created. The architectonic substance of very old buildings may thus be preserved in a non-aggressive manner. In addition, the underpinning method can be carried out very quickly and at a relatively low cost.

Abstract: A self releasing hold-down device for a dock leveler having a ramp mounted for pivotal movement about a hinge axis between a stored position and a working position includes an elongates ratchet bar engageable with a pawl mounted on a body connected to a rod which is anchored at one end to the leveler frame. One end of the rod includes a retainer and release pin member mounted thereon and whose position is adjustable by a nut threadedly engaged with the rod. A coil spring is sleeved over the rod and engageable with the retainer and release pin member. The body includes an elongated tube journalling the coil spring and a portion forming a recess for supporting the pawl. A release actuator is pivotally mounted on the body and is engageable by release pins on the retainer and release pin member in response to forces acting on the ramp to effect momentary release of the hold-down device. A manual release lever is operable, at will, to also effect release of the pawl from the ratchet bar.

Abstract: A storm water receptor having at least one inlet and an outlet positioned at a discharge level lower than the level of the intake provided with a novel, removable divider which divides the receptor into an upper chamber and a lower chamber, having a float-actuated trap door that permits water entering the upper chamber of the catch basin or field inlet to be diverted and flow into the lower chamber until the lower chamber is filled with liquid, at which point the entrance into the lower chamber closes, and water entering the upper chamber passes directly out of the upper chamber through the discharge pipe. In an alternative embodiment of the invention, the float-activated trap door can be replaced with a stationary, removable plate or ramp.