Abstract: A delivery device having a connecting rod, and a method for controlling a delivery device having a connecting rod and at least one balance weight, includes a part that is permanently connected to a shaft, on which part a pivot bearing is situated, by which the first end region of the connecting rod is accommodated by the part, in particular such that the connecting rod is able to be driven in eccentric manner, balance weights being situated on the part so as to be displaceable by a first drive, a first computer being provided on the part, which controls the displacement of the balance weights.

Abstract: A counterweight system for a wind turbine is provided. The wind turbine comprises a rotor hub positioned on a wind turbine tower such that the rotor hub is configured to rotate around an axis, the rotor hub comprising one or more mounting surfaces, the counterweight system comprising: The system comprises a beam comprising a connection element adapted to be attached to the mounting surfaces, the beam being provided with a first steering mechanism adapted to control an orientation of the beam with respect to the connection element. Furthermore, the system comprises a counterweight mass coupled to the beam. Moreover, methods for installing blades to a rotor hub of a wind turbine are also provided.

Abstract: The present invention relates to a floating wind energy harvesting apparatus for offshore installation, comprising an elongated wind turbine body extending along a longitudinal wind turbine body axis, said wind turbine body comprising a lower body portion and an upper body portion; wind turbine blades attached to the upper body portion; at least a first cavity inside said wind turbine body and arranged within a first radial distance from said longitudinal wind turbine body axis; at least a second cavity arranged within a second radial distance, greater than said first radial distance, from said longitudinal wind turbine body axis; at least a first pump for pumping water from said first cavity to said second cavity; and an energy converter attached to said wind turbine body for converting the rotation of said wind turbine body to electrical energy.

Abstract: A counterbalance system for a cantilevered beam pumping unit includes a counterbalance support structure adapted to be mounted in an operating position on the cantilevered beam of the pumping unit. A suspension element is connected to the counterbalance support structure so as to depend from a suspension end of the counterbalance support structure, and a counterbalance weight is connected to the first suspension element in a spaced apart relationship with respect to the counterbalance support structure. A stabilizer device is connected to the counterbalance weight via a first pivot connection and is connected to a structure separate from the counterbalance weight via a second pivot connection.

Abstract: A balancer of an engine includes a rod and a balancer piston. A first end portion of the rod includes a joining portion which is arranged to be joined to a crankshaft of the engine at a position that is eccentric relative to a rotation axis of the crankshaft. A second end portion of the rod is arranged to reciprocate inside a cylinder according to a rotation of the crankshaft. The balancer piston is fixed to the second end portion of the rod. The balancer piston is arranged to reciprocate inside the cylinder, while rocking between a contact state in which the balancer piston is in contact with an inner wall surface of the cylinder and a non-contact state in which the balancer piston is separated from the inner wall surface. The balancer piston includes a cylindrical outer peripheral portion that is curved so as to swell toward the inner wall surface.

Abstract: The device is a counterbalance system and method to reduce the work of conventionally balanced, reciprocating cantilevered beam pumping units, and comprises a pair of transversely oriented support mounts attached to the cantilevered beam or walking beam of a pre-existing reciprocating pumping unit, attaching on either side of the pivoting-fulcrum, mounting point of the cantilevered walking beam. These transverse mounting points terminate individually on either side of said walking beam in channel-like saddles that support independent, parallel beams, which in turn cantilever themselves in tandem with said walking beam of the pumping unit; moreover, the position of the parallel beams by virtue of the transverse mounts creates a new center of gravity corresponding to the center of the pivoting mounting point of the walking beam, eliminating counter-productive torque forces on the walking beam as it tilts from horizontal.

Abstract: The invention concerns a drive system (1) for a rolling mill, especially for a cold pilger rolling mill with at least one roll frame (1) movable back and forth, at least one crank drive (3) which has a crank arm (4) with a counterweight (5) for at least partial compensation of the inertial forces produced by the mill frame (2), a drive (6) and a connecting rod (7) which articulates the mill frame (2) and the crank arm (4) with one another and at least one counterweight (8, 9) which is eccentrically rotatable and serves to compensate the inertial forces and/or the moments of inertia. To achieve an efficient balancing of the inertial forces with a simple construction of the drive system, the invention provides that at least one counterweight (8, 9) is rotatably driven by a separate rod (10, 11) independently from the drive (6) of the crank drive.

Abstract: An adjustable length composite push rod constructed of a composite bar having two specially shaped ends to which metal end fittings bond via mating surfaces provided thereon for evenly distributing mechanical stress from the metal end fittings to the composite bar. The bar is constructed of a plurality of layers of sheets of thermosetting, epoxy impregnated, longitudinally oriented fiber material that form the inner portion of the push bar and a single outside sheet of thermosetting, epoxy impregnated, woven fiber material forms the outside portion of the bar.

Abstract: A walking beam balanced span and moment regulating oil pump having an arc, a walking beam, a support, a pitman, a base, a crank, a decelerator, a power machine, and a string device. The upper part or the lower part of the front end of a boom is articulated to the rear end of the walking beam, and between the lower part or the upper part of the boom and the rear end of the walking beam is placed a weighted arm regulator, and a weighted device is installed on the end of the boom. The walking beam balanced span and moment regulating oil pump is simple in structure, easy to operate, reliable in performance and less costly than conventional devices.

Abstract: A crankshaft and piston arrangement for a combustion engine including a piston pivotally connected to a crankshaft by a connecting rod and two balance structures each including a balance structure connecting rod connected to the crankshaft and a balance arm having a longitudinal axis and pivotally connected to the balance structure connecting rod. The balance arm is pivotally connectable at an end remote from the balance structure connecting rod to the engine. The longitudinal axes of the balance arms extend in substantially opposite directions to one another and are substantially perpendicular to a plane through the crankshaft rotational axis (C) and center of the piston when the piston is at substantially mid-stroke and rotate in opposite directions to one another in use. Each balance structure is substantially diametrically opposed to a piston with respect to the crankshaft rotational axis thereby operably to balance forces generated by the acceleration and deceleration of the piston in use.

Abstract: An engine for use in a marine propulsion system for use on a boat having a force balancer mechanism for off-setting the shaking force created by the reciprocating pistons. In a two-cylinder, four-stroke marine engine, a pair of reciprocating pistons move in unison within respective cylinders. The force balancer mechanism is mounted to the rotating crankshaft such that rotation of the crankshaft results in reciprocating movement of the balance weight in a direction opposite the pair of pistons. The balance weight of the force balancer mechanism is contained within a balance weight housing formed in the engine block. The weight of the balance weight and the distance of the balance weight from the axis of rotation of the crankshaft are selected to optimally reduce the amount of shaking force in the engine.

Abstract: A horizontal top brush for a vehicle laundering or finishing plant wherein a brush rotated by an hydraulic motor is mounted between the free ends of pivot arms carried by spaced vertical stanchions flanking a vehicle treatment location. Counterweight arms on the left and right sides of the wash lane have an axis of rotation which is spaced from the axis of rotation of the brush pivot arms. The counterweight arms are mechanically interconnected with the brush arms by sector gears, an arrangement which permits all of the brush and counterweight arms to lie on one side of the vertical support stanchions. The brush arms are slotted to permit the counterweight arms to pass through them. Brush position relative to the vehicle is varied as a function of brush motor reaction which in turn is a function of brush contact pressure or depth.

Abstract: In a wobble press with a first wobbling die-half and an axially parallel moving second half-die, the wobbling motion is generated by a plurality of hydraulically actuated working pistons cyclically engaging with the wobbling half-die and by means of the elimination of centrifugal forces by a counterweight (G) connected to the wobbling half-die, the precise guiding of the die-halves by a centering disk and the avoidance of a mechanical drive by using a multiple-pistons pump and a hydraulic control system for the working pistons, it is possible to reduce undesirable rotary forces, vibration, friction and heat generation in such a way that substantially higher wobble frequencies and shorter processing times are attained at lower cost while maintaining the geometrical wobble effect owing to the higher wobble frequency, with a simple and rapidly acting control of the extent and form of the wobbling movement even during operation, thus making it possible to preselect the most suitable pressing program.

Abstract: A rod pumping unit used in the oil field, which has high efficiency and saves power, characterized in that: for the connection of the 2.omega. crank and the main crank in the 2.omega. crank balance device there is provided a differential phase adjusting mechanism, for the walking beam balance there is provided beam balance mass lowering device having positioning mechanism or self positioning mechansim, these devices can be adjusted manually in non-stopped status or by computer. The advantages of the pumping unit of the present invention are that the torque fluctuation of the speed reducer is small, the negative work of the power machine is eliminated and the power consumption and the total weight of the machine are decreased greatly. The present invention may save power and material to 50% as compared with the conventional beam pumping unit.

Abstract: A power transmission device for converting rotational movement of a rotation shaft into reciprocal movement in an axial direction of the rotation shaft. This device comprises a bevel gear for converting rotation of the rotation shaft into rotational movement of a-second rotation shaft, a-first eccentric shaft turnable with an eccentricity to the second rotation shaft, a-second eccentric shaft turnable with an eccentricity of 180.degree. apart from the first eccentric shaft, a-first reciprocating member reciprocally movable in the axial direction only of the rotation shaft in response to the rotational movement of the second eccentric shaft, and a-second reciprocating member reciprocally movable in the axial direction only of the rotation shaft in response to the rotational movement of the first eccentric shaft. The second reciprocating member exerts a damping effect on the first reciprocating member.

Abstract: A compact well jack is particularly suitable for reciprocating a long stroke rod pump and in situations wherein horizontal area around the well head is limited. The pump jack has a frame with elongated guides, a lifting bar slidably disposed between the guides, a horizontal slot in the lifting bar, pulleys carrying an endless belt having a stud affixed opposite to a counter weight and extending into the slot such that rotation of the pulleys vertically reciprocates the lifting bar and sucker rod string while the stud moves horizontally within the slot.

Abstract: A dynamic balancing device for a press is provided for balancing the inertia forces generated by the reciprocating parts of the press using balancing weights. A connecting rod is mounted around the crank of the drive shaft and has one end pivotally connected to the slide and the other end pivotally connected to a link. The link is connected to a pair of levers extending in opposite directions. The levers are used to move a respective pair of balancing weights 17 in opposite directions to the direction of movement of the reciprocating members of the press. The balancing weights are guided by guide pins 18 received in bores extending through the balancing weights.

Abstract: A balancing device for a press slide arranged in a vacant space of the press frame has an eccentric ring portion 180.degree. out of phase with an eccentric portion of the crank shaft attached to an end of the crank shaft and, a balancing weight slidable on guide posts and reciprocated vertically through a slide-block mounted in the eccentric ring.

Abstract: A long stroke pump rod articulation system includes a continuous belt loop attached to carry a connecting rod pin which engages a connecting rod secured to apply articulation forces to a belt supported counterbalance. The belts of the counterbalance oppose the extension of the pump rod articulating belt.

Abstract: A gas bearing air slide assembly includes a slide ram movable within a relatively stationary housing. The slide ram and housing have a plurality of mated planar slide surfaces. Pressurized air is supplied between the mated slide surfaces of the slide ram and housing to create a hydrostatic bearing separating said mated surfaces and supporting the slide ram for longitudinal movement with respect to the housing. A counterbalance is provided on the slide ram for movement in direction opposite that of slide ram movement to compensate for slide ram axial displacement as it is extended from the housing. The housing is formed from a pair of identical housing halves joined along a joinder plane which passes through a central longitudinal axis of the slide ram. The slide surfaces of the ram and housing are mated by equalized lapping to a point of zero tolerance.

Abstract: A microprocessor based control system for establishing the optimum points of motor turn on and turn off for an oscillatory pumping system. The power to the motor is disabled at a point calculated to return the maximum stored mechanical energy to the system after turn-around. The motor is restarted at either a predetermined motor speed which may be different in the up and down stroke directions, or when the speed peaks. Safeguards are also provided under control of the microprocessor for disabling pump operation in the event of pump overtravel, overload or pump off. The control permits dynamic changes to the operating parameters of the pumping system in order to optimize the power required by the motor over a wide range of operating conditions.

Abstract: In a heavy-duty pump jack as used in oil well pumping, a leverage beam is oscillated by a motor-driven crank and the leverage beam acts upon the walking beam through an adjustable stroke controller.

Abstract: A petroleum pumping unit which is especially suitable for use in remote oil fields and under unpredictable pumping conditions is disclosed. The petroleum pumping unit of the present invention, which is easily movable between a folded, collapsed position for storage and shipment and an erect position for pumping operations, includes a horizontal support platform on which is pivotally mounted a mast assembly including a pair of masts spaced outwardly from the centrally positioned well polish rod. The polish rod is engaged by a notch in a horizontal, vertically movable bridle and is powered by at least one pair of flexibly mounted hydraulic cylinders and associated piston rods attached to the bridle and positioned between the polish rod and the masts and parallel thereto. Vertical movement of the bridle and, therefore, the stroke of the polish rod is defined by upper and lower limit switches which are actuated by actuating means on the bridle.

Abstract: An oscillatory pumping system of the type having sheave chains wound in opposing directions over a mandrel, one sheave chain connecting to a rod string of a well and another supporting a counterbalance, is improved to include both rate and position sensors which, through a logic system control the application and reversal of power. The system is further improved by selection of geometry and in engagement features such that upon full playout of either chain the time of stroke reversal is shortened. This counterbalanced pumping system may be pivotally mounted on a tower thus allowing for installation of pump seals above ground.

Abstract: An improved pump jack assembly for reciprocating a sucker rod in a well bore is disclosed. The pump jack assembly includes a walking beam pivotally mounted for free swinging motion on a Sampson post. The walking beam includes a fixed counterweight mounted on one end and a horsehead mounted on the opposite end. The walking beam is driven in up-and-down pumping motion by a pair of balance weights which are coupled for coordinated reciprocal movement along the walking beam. The balance weights are linked together for concurrent movement and are driven by a hydraulic cylinder mounted on the counterweight end of the walking beam. The weights are so positioned that while one weight is being raised by the hydraulic cylinder, the other weight is falling due to gravity. Thus the weights help each other and greatly reduce the power requirement. The downward stroke of each end of the walking beam is limited by saddle weights which are pivotally coupled to the walking beam on opposite sides of the Sampson post.

Abstract: A windmill is disclosed having a counterbalancing mechanism which allows it to pump effectively under minimal wind velocity. The windmill includes blades which undergo rotational movement when actuated by the wind, a transmission for converting rotational movement of the blades to reciprocal motion of a pumping rod, a support structure or tower for supporting the blades, transmission, and rod, a counterbalancing mechanism functionally connected to the support structure and rod such that the weight of the rod and liquid column within the well is effectively counterbalanced, and a collar surrounding the rod and supported by the support structure to prevent vibration of the rod during reciprocation. The counterbalancing mechanism may include a pair of rods which are pivotably supported on the supporting structure of the windmill and pivotably mounted to the pumping rod. Weights are attached to the portions of the rods extending exteriorly from the supporting structure.

Abstract: An inertia bar to be installed in a well between a sucker rod string and a subsurface pump. A string of the bars adds weight to the sucker rod string and maintains it under tension throughout a pumping cycle. A sufficient number of the bars are used to place a neutral zone within the inertia bars. The neutral zone is a zone in which there is neither tension nor compression in the bars. The body of each bar has a relatively large diameter, which for example may be the same as the outside diameter of the couplings used to connect the individual sucker rods. The bar has pins at its ends for engaging the couplings, which pins have the same dimension as standard sucker rod pins. The bar can be engaged by a conventional elevator when it is to be removed from a well.

Abstract: A wind machine has a tower frame formed by four converging beams. At the top of the tower is a gear head connected to a wind driven rotatable multibladed rotor. Connected to the gear head is a vertical shaft which is reciprocated vertically as the rotor rotates. Bearings above and below the gear head enable the gear head to drive the shaft in both downward pushing and upward pulling modes. The system includes a counterbalance assembly having tubular arms at opposite sides of the vertical shaft. The arms are slidably carried by sleeves pivoting in vertical planes on stationary pillow blocks secured to the tower frame. Inner ends of the arms are connected to the vertical shaft. Weights inside the arms are adjustably positioned on threaded rods, and both rods and weights can be locked in place for adjusting the counterbalancing effect of the assembly with respect to the vertical shaft and load.

Abstract: An oil well pump jack with dual hydraulically operated piston and cylinder assemblies for pivoting the walking beam of the pump jack and including a unique control arrangement for controlling operation of the piston and cylinder assemblies. The pump jack includes a unique base or skid and an adjustable knee brace assembly to facilitate positioning of the pump jack in properly supported relation to the oil well at the oil well site. The control arrangement for the piston and cylinder assemblies includes a reversing valve, a linkage mechanism for operating the reversing valve to cause controlled oscillation of the walking beam and a cushioning device for controlling acceleration and deceleration of the oscillating walking beam to reduce abrupt tension forces exerted on the polish rod and sucker rods and impact forces imparted to the pump jack during oscillation of the walking beam.

Abstract: A hydraulically operated oil well pump jack utilizing a double acting hydraulically operated piston and cylinder assembly for pivoting the walking beam of an oil well pump jack, a linkage mechanism for operating a reversing valve to cause extension and retraction of the piston and cylinder assembly for oscillating the beam about a saddle bearing at the upper end of a stanchion or samson post together with a crossover cushioning device for controlling acceleration and deceleration of the oscillating walking beam to reduce abrupt tension forces exerted on the polish rod and sucker rods and also reduce impact forces on the oil well pump jack during oscillation of the walking beam.

Abstract: The disclosure of the present invention relates to a torque and mass compensating counterweight system employed with the drive of a cold pilger rolling mill. The counterweight is connected directly to the crank by a sliding block, displaceable in a slot provided in the counterweight, in which the counterweight is arranged to reciprocate 90.degree. out of phase with the crank and is arranged in guides to move in a plane parallel to the direction of movement of the mill.

Abstract: A tufting machine bed having an oscillating looper assembly in which the oscillating mass is counter-balanced by mechanism including a weight which oscillates about a pivot point in the bed in a direction opposite to that of the looper assembly. The oscillatory motion of the counter-balancing assembly is derived from the same oscillating shaft that drives the looper assembly.

Abstract: Noise reduction is achieved at the rear axle of an automotive vehicle by mounting a weight at the point on the rear axle housing at which a lateral control rod of the vehicle is connected. The lateral control rod extends between the body-frame attachment and a pin at which one end of the control rod is connected and the weight to reduce noise is mounted in the vicinity of the pin.