Abstract: The invention relates to a continuously variable transmission, consisting of at least a transmission housing which accommodates a pulley/drive belt unit, a hydraulic circuit, in particular for the control and/or lubrication of the transmission, and a fluid reservoir. The transmission housing and/or the hydraulic circuit are provided with a way of promoting the flow of fluid to the bottom of the transmission housing from the rest of the transmission housing.

Abstract: A device for exploring the transferring of motion from one body to another body which utilizes a motion transfer surface is presented. The device is a hollow structure for receiving an object which has a motion transfer surface on its exterior. The hollow structure may be a tube or a polygon, such as for example a pyramid. The hollow structure can be opened and closed so that the object can be secured therein. Preferably, the object is spherical. Further, the object may have a gyroscope seated within its interior. The gyroscope may be activated by waves having a frequency, such as for example sound waves or electronic waves. Further objects, each having a motion transfer surface may also be seated within the hollow structure. Preferably where two or more objects are present, each object has a motion transfer surface and is in frictional contact with another object. Additionally, a toothed ribbon suitable for use as a motion transfer surface is described.

Abstract: This invention provides the structure and operation of a double-acting, deep-well fluid extraction pump assembly which includes a power piston housed on top of a pumping piston along with a power control system. The pumping piston has a dynamic, reciprocating, bi-directionally self-cleaning, suction filter and houses poppet-type, uni-directional, fluid flow control valves that control the inflow and outflow of extracted fluid through the pumping piston. Gland membranes and a number of double-acting, lineal, fluid motor pistons divide the power piston into pressure chambers and into fluid conduits, with the divisions conjointly providing a path for inflow of hydraulic power fluid and a path for outflow of extracted fluid. The power control system includes a four-way, directional, flow-control valve for controlling cycling frequency, a timer and a flow switch for controlling recovery periods, an unloading relief valve for controlling fluid pressure and a flow-control valve for controlling pumping speed.

Abstract: A hydraulic tensioner with an internal reservoir. The tensioner includes a housing having a sleeve, and a hollow piston slidably received about the sleeve and biased in a protruding direction by a spring. A fluid chamber is defined by the sleeve and the hollow piston. Fluid from an external source flows through a passageway into a reservoir which is located inside the tensioner housing above the fluid chamber. The reservoir is connected to the fluid chamber such that fluid flows from the reservoir through a check valve assembly into the fluid chamber such that the fluid chamber remains filled with fluid.

Abstract: A variable ratio drive pulley of the type employed in snowmobiles to transmit a drive from the snowmobile engine to a variable ratio belt drive transmission has a fixed flange and an opposed movable flange which cooperate to drive the belt. The drive pulley is coupled to rotate with the engine crankshaft and the movable flange incorporates a centrifugal means that operates to advance it towards the fixed flange, with a force that increases with speed of rotation, to grip the transmission belt between the flanges and apply a driving torque thereto, this torque being applied by both the flanges. To reduce the effects of engine induced vibrations on the centrifugal means and on the movable flange, a damping structure is incorporated in the torque path between the engine crankshaft and the centrifugal means and movable flange.

Abstract: At least one guide shaft is equipped on one or both sides of a plurality of drilling shafts arranged on a line; and a jet nozzle is equipped with said guide shaft. A multi-shaft drilling unit, equipped with preferably three auger shafts, is used to develop a continuous wall under the ground. In such a unit, a housing for maintaining a pitch between the auger shafts includes a housing comprising: a primary gear rotating around the central auger shaft; a pair of secondary gears engaging with the primary gear; a primary bevel gear integral to the primary gear; a secondary bevel gear engaging with said primary bevel gear and fixed to a rotary shaft which rotary shaft is perpendicular to a straight line connecting the center lines of auger shafts; and cutters fixed at both ends of the rotary shaft.

Abstract: A tensioner capable of controlling strand vibration and motion and reducing noise in a slack strand of a chain assembly includes a flexible shoe, an elongated spring and a resilient damping device. The flexible shoe is pivotally mounted on a tensioner bracket to engage and tension a chain. The elongated spring is inserted in the flexible shoe to apply a tensioning force to the shoe. The resilient damping device is mounted between the tensioner bracket and the spring to limit chain vibration occurring due to valve events and firing pulses of an engine. The damping device is particularly useful in damping vibration in an automotive engine timing drive.

Abstract: In a preferred embodiment the core drilling rig of the present invention includes a base, a vertically extending mast, a movable carriage mounted on the mast, an electric powered motor for rotatably driving a core drill bit, and a control system for controlling the supply of electric power to the drive motor. The control system includes a motion sensitive device for detecting the unwanted movement of the base and suspending the supply of electric power to the motor.

Abstract: A system and method for removing light non-aqueous liquids via a wellbore from at least a water-saturated subterranean zone using an oleophilic absorbent wick by positioning the wick in a wellbore extending from the surface through at least a portion of the subterranean water-saturated zone; reducing the pressure in the wellbore and removing vaporized light non-aqueous liquids from the wellbore.

Abstract: The invention features an assembly for use in a system used to drill a well. The system is capable of receiving a mixture of drilling fluid (e.g., liquid mud) and gumbo from downhole of the well. The assembly has a grating having at least one opening extending through the grating and positioned to intercept the mixture. The at least one opening is sized to block the gumbo from passing through the at least one opening and to allow the fluid to pass through the at least one opening. The assembly has an arm and a motivator connected to move the arm across the grating to remove the gumbo blocked from passing through the at least one opening.

Abstract: An improved hardfacing for teeth and other surfaces of milled tooth rock bits includes steel in the range of from 20 to 50 percent by weight, and filler in the range of from 50 to 80 percent by weight. The filler includes spherical cast tungsten carbide particles alone or in a mixture of other tungsten carbide particles such as crushed cast spherical or crushed cemented tungsten carbide, macrocrystalline tungsten carbide, or the like. The single crystal monotungsten tungsten carbide particles have a particle size in the range of from 16 to 40 mesh and/or in the range of from 80 to 200 mesh.

Abstract: A process for recycling the upper surface of an asphaltic surface. The process includes the steps of: (a) rupturing the upper surface to a depth of at least about 1.5 inches to provide a ruptured upper surface overlying the remaining unruptured portion of the asphaltic surface; (b) heating and mixing the ruptured upper surface on the remaining unruptured portion of the asphalt surface to a temperature in the range of from about 100.degree. to about 350.degree. F. to produce a heated, ruptured upper surface which is substantially free of moisture; and (c) pressing the heated, ruptured upper surface to provide a recycled asphaltic surface. An apparatus adapted for carrying out the process is also described.

Abstract: An endless belt particularly adapted for use in high speed power transmission, commonly termed a fan belt, which is particularly adapted to be readily formed on site to any desired length and methods and apparatus for forming the belt. The belt construction includes an outer length of flexible tear-resistant material having abutting ends so as to form a closed loop and defining an endless channel extending longitudinally therethrough. An inelastic ribbon of flexible tear-resistant material is disposed within the channel and extends about the loop defined by the outer length of material such that the ribbon extends across the abutting ends of the outer length of material and the ends of the reinforcing ribbon are in an abutting relationship within the channel at a location substantially diametrically opposed across the formed loop from the abutting ends of the outer length of material.

Abstract: An agricultural forage box includes an infinitely positionable variable speed drive system and an improved trip mechanism. The variable position drive system utilizes a drive belt for driving the floor conveyor of the forage box, which is driven in response to rotation of a pair of sheave sections. One of the sheave sections can be moved relative to the other, and a sheave positioning mechanism provides adjustment in the position of the movable sheave section. The variable position mechanism includes a yoke which is movable in response to operation of an actuator plate and linkage mechanism, which in turn is interconnected with a control lever. The improved trip mechanism includes a trip bar mounted to the forage box for pivotal movement about its longitudinal axis. A trip lever is located adjacent a declutching tab associated with the power train. A pair of cables extend between the trip bar and the trip lever, and are connected one on either side of the trip bar longitudinal axis.

Abstract: A low noise belt for a continuously variable transmission includes a plurality of stacked strip members and a plurality of blocks each having head and body parts and a middle portion where the head and body parts are divided. The middle portion is provided with notches into which the stacked strip members are inserted, wherein each block is bent at its middle portion at a fixed angle in order to improve torque transmission efficiency and minimize the generation of noise and increasing the contact surface with pulleys.

Abstract: The present invention relates to a drive assembly having an endless rotating drive element which runs over a driving gear of a motor and a driven gear of a machine and a tensioning device for the drive element. The motor is arranged on a support which is supported in a positionally variable manner on a frame that carries the machine, and which is pretensioned vertically downwards by both the weight (G) of the motor and a pretensioning force (F) of a pretensioning unit which acts substantially in parallel with the weight (G) of the motor.

Abstract: An apparatus for loading fluid into subterranean formations includes a housing, a sleeve slidably disposed within the housing, a piston defining an interior volume, the piston slidably disposed within the sleeve and within the housing such that a fluid pressure within the interior volume causes the sleeve to oscillate relative to the housing and causes the piston to oscillate relative to the sleeve and the housing, and a pump which is operably associated with the piston such that the fluid pressure from the interior volume is intensified in the pump and injected into the formation as the piston oscillates relative to the housing.

Abstract: A belt tensioning device is provided for a pulley drive mechanism including a motor with a drive shaft, a drive pulley mounted on a drive shaft, an idler pulley rotatably mounted in a pulley support, and a drive belt trained around the pulleys. The belt tensioning device includes a scissor jack connected between the motor and the idler pulley support. The jack is extendible so as to increase the spacing between the pulleys and thereby increase the belt tension, and retractable so as to decrease the spacing between the pulleys and thereby decrease the belt tension. The extension and retraction of the scissor arms of the jack is controlled by a draw bolt, or alternatively, by a spring which automatically provides tension on the belt. In the method of adjusting the belt tension, the jack is installed between the drive pulley and the idler pulley, and the jack is then actuated so as to adjust the spacing between the pulleys and thereby adjust the tension of the drive belt.

Abstract: An apparatus which includes an external housing (10) and a slotted internal sleeve (26) machined from cylindrical lengths of hollow metal pipe stock, and one or more partially-hollowed-out plug screws (16). This apparatus uses no seals or O-rings. The apparatus is attached between a tubing string of a well and a big bore pump. When activated, the apparatus permits fluids to drain from well tubing. The apparatus has only one moving part and is activated by pulling upward on sucker rods of a well, an action which causes the top of a big bore pump plunger to make contact with the sleeve and move the sleeve upward within the housing. The sleeve is secured inside the housing by one or more partially-hollowed-out plug screws which are sheared when the contact is made, exposing at least one opening. The opening in the sleeve aligns with the hole in the partially-hollowed-out plug screw caused by the shearing.

Abstract: A retainer valve provides increased safety in wellsite operations. In a preferred embodiment, operation of the retainer valve may be responsive to control line pressure or to tubing pressure. The retainer valve response is controlled by several factors, among which are relative tubing and balance line pressures, and axial positions of a number of pistons relative to a tubular J-slot member. If the control and balance lines are disconnected, or otherwise unavailable for operation of the valve, it may still be operated by manipulation of the tubing pressure at the earth's surface. Thus, the valve may be opened in emergency situations in which the control and balance lines are unavailable, but operation of the valve is still needed in order to safely relieve trapped pressure in the tubing string and/or to kill the well, unlatch a subsea test tree, etc. The retainer valve is also useful as a lubricator valve.