Abstract: A sealing apparatus for sealing an annulus is described. The apparatus comprises a first sealing element (20) adapted for sealing the annulus against fluid pressure from above the sealing apparatus and adapted to be actuated by fluid pressure from above the apparatus and a second sealing element (40) adapted for sealing the annulus against fluid pressure from below the sealing apparatus and adapted to be actuated by fluid pressure from below the apparatus. In use, the sealing elements are arranged such that the second sealing element is above the first sealing element.

Abstract: A beach maintenance and cleaning vehicle for cleaning the beach with a vehicle frame and vehicle wheels, with a receiving container for receiving contaminants, and with a conveying and separating device for raising up the underlying surface and for separating contaminants out of this underlying surface and for conveying the contaminants into the receiving container. The conveying and separating device having a pick-up which is arranged and formed in such a way that it comes into contact with the underlying surface while the beach maintenance and cleaning vehicle is driving and raises up parts of said underlying surface, and a screen belt which is moved relative to the vehicle frame. There is provision for the conveying and separating device to have a comminutor which is arranged between the pick-up and the screen belt and is configured for breaking up sand lumps of the received underlying surface.

Abstract: Included are embodiments of a power assisted garden tool. Some embodiments include a handle and an interchangeable tool implement including a garden tool end, a connection end, and an impact platform. Similarly, some embodiments include a drive mechanism coupled to the handle, the drive mechanism including a power source, a motor that provides rotational motion to a rotary shaft, and a piston coupled to the rotary shaft, the piston exhibiting reciprocating motion from the rotational motion, the piston making contact with the interchangeable tool implement, such that the reciprocating motion of the piston causes motion of the interchangeable tool implement.

Abstract: A safety apparatus for a portable tool having an internal combustion engine has at least one accelerometer providing a measurement of an acceleration of the portable tool in at least one plane or axis. An electronic controller is connected to an output of the accelerometer so as to receive analog or digital information. A generator is driven by the internal combustion engine so as to supply power to the accelerometer. A management card processes the analog or digital information so as to activate the system acting on an ignition exciter box so as to nearly instantaneously stop the internal combustion engine when the acceleration of the portable tool exceeds a predetermined level.

Abstract: A battery device is constituted by connecting such cell assemblies in parallel as each includes: a first cell group having a plurality of cells connected in series; a housing container for housing the first cell group; current detector housed in the container for detecting a current to flow through the first cell group; a switching element connected with the first cell group for turning ON/OFF the current to flow through the first cell group; and a controller for controlling the ON/OFF of the switching element in response to the output signal of the current detector.

Abstract: It is an object of the invention to provide a technique for bringing a center of gravity of a battery-powered power tool closer to a working axis of a tool bit in the battery-powered power tool. The battery-powered power tool performs an operation by movement of a tool bit 119 in an axial direction of the tool bit. The power tool includes a battery 110, a motor 111 that is driven by power supply from the battery 110, a mechanical arrangement 113, 115, 117 that drives the tool bit 119 by rotative power transmitted from the motor 111, and a tool body 103 that houses the motor 111 and the mechanical arrangement 113, 115, 117 and has a front end region in which the tool bit 119 is disposed. A sum of weights of the motor 111 and the battery 110 is smaller than a weight of the mechanical arrangement 113, 115, 117.

Abstract: In certain embodiments, a steerable drilling tool is provided including a rotatable shaft extending through a housing where the shaft and the housing are separated by at least one bearing or two sets of bearings, the shaft having a first portion terminating at a first end of the shaft and a second portion terminating at a second end of the shaft. The steerable drilling tool may further include a drill bit structure operatively coupled to the first portion and a steering subsystem comprising a pair of bearings operatively coupled to the first portion. The steering subsystem may be configured to angulate the shaft by exerting force substantially through the pair of bearings. In certain embodiments, the first portion is between the first end and about one-third of the length of the shaft from the first end towards the second end.

Abstract: A rock drilling device comprising a feed beam (4), which has a drill end (41) from which the drill point protrudes at drilling and a rear end(42) opposite the drill end; a rock drilling machine (5) movable along the feed beam (4); a pressure cylinder (6), which is arranged in connection with the feed beam (4) with one end (622) movable relative to the feed beam (4) and one end (611) fixedly arranged relative to the feed beam (4). The pressure cylinder (6) drives a feed line (51) for feeding the drilling machine (5) to and fro along the feed beam (4). The feed line (51) is routed over two outer sheaves (52, 53) that are arranged at each end (41, 42) of the feed beam (4) and a measuring device (7) for measuring the location of the drilling machine (5) relative to the feed beam (4) is arranged to the shaft (9) of one of the sheaves (52, 53) and the sheave and the shaft (9) are arranged such that they rotate together.

Abstract: A pressure compensation assembly for a drill bit having a cavity to receive the pressure compensation assembly, a mud port connected to the cavity, and a lubricant passageway connected to the cavity, is disclosed. The pressure compensation assembly includes a relief mechanism having a selected operating pressure. The pressure compensation assembly is movable from a first position to a second position within the cavity. The pressure compensation assembly may receive lubricant at a pressure exceeding the selected operating pressure to permit the flow of lubricant into the lubricant passageway while substantially preventing the release of lubricant into the mud port while in the first position. The pressure compensation assembly is operable to limit a pressure differential within the drill bit while in the second position.

Abstract: Apparatus and methods operate to seal off a column of effluents standing in a borehole annulus from a drill bit assembly during earth drilling operations. A seal assembly, sections of drill pipe, and tubular casing members are assembled into a fluid pressure-restraining drilling tool. The drilling tool is inserted into a drill string above the drill bit. The seal assembly tracks with the drill string, traveling along the borehole wall to maintain an annular seal at a substantially constant position above the drill bit as drilling operations progress. Pressures produced by the column of effluents are exerted at the upper portion of the seal as the effluent column is prevented from reaching the drill bit.

Abstract: The invention relates to a drilling device and a drilling method for drilling inside a casing tube with a drilling apparatus, which has a supporting frame with a fastening means for fixation with respect to the casing tube and a drilling tool, which is driven in a rotating manner via a telescopic rod by means of a drill drive arranged on the supporting frame. At the upper end of the casing tube a receiving part is arranged in accordance with the invention, onto which the supporting frame can be fastened. The receiving part is adjustably supported between a drilling position and an offset position, in which the receiving part is laterally offset with respect to the casing tube.

Abstract: A drill string assembly is required that has the capability of operating in well bores that range in hole size from seven to eight inches in diameter. The assembly is used to obtain a large core sample size that is equal to three and one-half inches in diameter and up to ninety feet in length in a single core run. This assembly will be operated with a drill string (i.e. drill pipe) that is capable of being used on standard drilling rigs, which may be used to handle API style drill pipe to conduct coring/drilling operations. The coring tool is comprised of an inner barrel for receiving the core sample.

Abstract: A reamer bit for use in earth boring operations comprising a body, four cutter mounts, rolling cutters on each mount, and cutting elements disposed on each cutter arranged so adjacent cutting swaths formed by the bit are created by cutting elements on cones of oppositely disposed cutter mounts. The swaths are generally curvilinear, wherein the outermost swaths are formed by cutting element rows on the outer portion of the cutters. The reamer bit can further comprise a pilot bit.

Abstract: Described herein are roller cone drill bits and modified roller cones for use in drilling subterranean earth formations, and more specifically roller cone drill bits and roller cones having optimized spear point designs and blade orientations on at least one of the roller cones for reduced tracking and/or increased drilling performance during bit use. The roller cone drill bits include a bit body with a longitudinal axis, one or more bit legs depending from the body, and at least one roller cone attached to each of the bit legs and able to rotate with respect to the bit body, wherein at least one of the roller cones includes a spear point at the cone apex having two or more cutting blades, the cutting blades being oriented at a variety of non-equal, asymmetric angles about a central cone axis with respect to each other, such that tracking during drilling using the drill bit is minimized or eliminated.

Abstract: Polycrystalline compacts include hard polycrystalline materials comprising in situ nucleated smaller grains of hard material interspersed and inter-bonded with larger grains of hard material. The average size of the larger grains may be at least about 250 times greater than the average size of the in situ nucleated smaller grains. Methods of forming polycrystalline compacts include nucleating and catalyzing the formation of smaller grains of hard material in the presence of larger grains of hard material, and catalyzing the formation of inter-granular bonds between the grains of hard material. For example, nucleation particles may be mixed with larger diamond grains, a carbon source, and a catalyst. The mixture may be subjected to high temperature and high pressure to form smaller diamond grains using the nucleation particles, the carbon source, and the catalyst, and to catalyze formation of diamond-to-diamond bonds between the smaller and larger diamond grains.

Abstract: A cutting element that includes a substrate; and an outer layer of polycrystalline diamond material disposed upon the outermost end of the cutting element, wherein the polycrystalline diamond material: a plurality of interconnected diamond particles; and a plurality of interstitial regions disposed among the bonded diamond particles, wherein the plurality of interstitial regions contain a plurality of metal carbide phases and a plurality of metal binder phases together forming a plurality of metallic phases, wherein the plurality of metal carbide phases are formed from a plurality of metal carbide particles; wherein the plurality of interconnected diamond particles form at least about 60 to at most about 80% by weight of the polycrystalline diamond material; and wherein the plurality of metal carbide phases represent at least 50% by weight of the plurality of metallic phases is disclosed.

Abstract: An energy-producing system comprising an axle configured to be driven by an electric vehicle's wheels when in motion. The axle supports a series of wind-catching cups contained within an aerodynamic housing configured to direct air to the cups while also increasing the air speed. During vehicle motion, the cups are acted upon by rushing air causing the rotation of the axle such that the rotation may be transferred into energy via a generator/alternator linked thereto. A series of similarly polarized magnets integrated on said cups and/or spacers and/or housing proximate thereto further maintain the axle in motion during short vehicle stops. The system extends the life of the batteries between charges as well the distance the vehicle can travel between charges.

Abstract: An electric zero-turn working vehicle comprises a vehicle body frame, right and left drive wheels, right and left first electric motors for driving the respective right and left drive wheels, a transaxle including at least one of the right and left first electric motors, a working implement, and a second electric motor for driving the working implement. The right and left first electric motors have a space therebetween. The transaxle is supported by the vehicle body frame and is disposed below the vehicle body frame. At least a part of the second electric motor is disposed in the space between the right and left first electric motors.

Abstract: A transport device includes a support base, at least two spiral drives, at least one drive device, a control device and a power source. Each one of the at least two spiral drives are preferably driven by a single drive device. However, a single drive device could drive the at least two spiral drives through some type of drive system. The at least two spiral drives are rotatably retained on the support base. The at least two spiral drives are rotated through any suitable drive system. The power source supplies power to the at least one drive device through the control device. The control device controls the rotation and the amount of power sent to the at least one drive device. An object to be transported is placed on the support base. However, multiple transport devices may be attached to multiple sides of the object.

Abstract: A ski slope snow groomer having a frame; two wheel assemblies on opposite sides of the frame; two tracks wound respectively about the two wheel assemblies; a variable-configuration shock absorber assembly connected to the wheel assemblies and the frame and configured to adjust the wheel assemblies; and a control assembly configured to acquire a signal indicating an operating state of the snow groomer, and to adjust the shock absorber assembly as a function of the operating state signal.

Abstract: A ride-on mower including a frame unit supported to the ground through front wheels and rear wheels, a drive unit for supplying drive power to the front wheels and/or rear wheels, a mower unit, and a leaf blower unit. The ride-on mower is also provided with a blade drive power transmission mechanism for transmitting drive power to a blade of the mower unit, and a fan drive power transmission mechanism for transmitting rotational power from the blade drive power transmission mechanism to a fan. An adjustment mechanism is provided for adjusting the direction of an air discharge opening of the leaf blower unit. The leaf blower unit is arranged on a mower deck of the mower unit.

Abstract: A hybrid motor vehicle includes: an internal combustion engine that outputs motive power for vehicle traction; an engine-motoring electric motor that motors the internal combustion engine; a vehicle traction electric motor that outputs motive power for vehicle traction; a secondary battery that supplies electric power to the engine-motoring electric motor and to the vehicle traction electric motor; and a pre-engine-start control device that controls the internal combustion engine and the engine-motoring electric motor so as to motor the internal combustion engine in a reverse rotation direction without performing fuel injection or ignition when the hybrid motor vehicle is traveling on motive power from the vehicle traction electric motor without operating the internal combustion engine, after a system of the hybrid motor vehicle is started.

Abstract: The disclosure generally relates to a heat exchanger apparatus having first and second heat exchangers arranged in a parallel configuration to receive a first fluid (e.g., a hot fluid) to be subjected to a heat exchange operation (e.g., cooling of the hot fluid). The first and second heat exchangers are further configured in a series configuration with respect to the flow of a second fluid to be used as a heat exchange medium (e.g., a cold fluid to be heated by the first, hot fluid). The heat exchanger apparatus can be used as a radiator (e.g., engine coolant heat exchanger) for a motorized vehicle, in particular a heavy vehicle intended for use in relatively hot ambient environments (e.g., an armored fighting vehicle adapted for desert use at ambient temperatures above about 100° F.). The disclosure also relates to methods of using the heat exchanger apparatus, for example in the motorized vehicle setting.

Abstract: A vehicle compartment cover coupling that moveably couples a vehicle compartment cover to a main body of a vehicle for movement of the vehicle compartment cover between an open position and a closed position. The cover coupling includes a first member that is coupled to the main body of the vehicle. The cover coupling further includes a second member that is coupled to the vehicle compartment cover, wherein the second member is moveably coupled to the first member. The vehicle compartment cover coupling further includes a retaining coupling that is operable to engage the first and second members together during a vehicle impact condition. The retaining coupling engages the first and second members to limit movement of the compartment cover in a first predetermined direction during the vehicle impact condition.

Abstract: A fuel tank of a motor vehicle is mounted on a body structure of the motor vehicle via fastening elements. The fuel tank has a glass fiber reinforced shaped plastic part (12) as heat shield that at least partially covers a surface of the fuel tank and is mounted with the fuel tank on the body structure of the motor vehicle via the fastening elements.

Abstract: A motorcycle includes a steering head, a steering assembly pivotably coupled to the steering head, at least one longitudinal frame member extending rearwardly from the steering head, and a rear frame member coupled to the longitudinal frame member. The rear frame member includes a mounting portion having a mounting surface, and first and second walls extending from the mounting surface at an oblique angle to the mounting surface. The motorcycle also includes a support coupled to the rear frame member. The support includes a coupling portion having a coupling surface, and first and second walls extending from the coupling surface at an oblique angle to the coupling surface. The first and second walls of the mounting portion are wedged against the first and second walls of the coupling portion, respectively, to substantially prevent rotation of the support with respect to the rear frame member.

Abstract: A vehicle, such as a motorcycle, can include an engine and a head pipe provided ahead of the engine. Electrical equipment provided behind the head pipe and ahead of the engine can be partly exposed by a gap between a down frame and a radiator of the vehicle, enabling the electrical equipment to be cooled by airflow.

Abstract: A mower having a cutting deck for cutting grass has four drive wheels arranged in a square or rectangular configuration on the mower's frame. Four wheel drive and four wheel steering are employed with the drive wheels. The four wheel drive is provided by a hydraulic drive system that employs a pair of identical serial circuits which have their own pumps with each pump serially sending its output through a rear drive motor and a front drive motor that are catty-corner to one another on the frame, i.e. are on opposite sides of the motor. Various flow crossover paths and flow recirculation paths are provided in the serial circuits to ensure the drive motors receive adequate flow in maximum turns of the mower. The flow recirculation paths around a pair of drive motors at one end of the frame are shut off during reverse and during braking so that all drive motors retain hydraulic braking in these conditions.

Abstract: This seat belt device of a vehicle includes a webbing, a belt reel, a motor, a clutch, detection unit, brake control unit and motor control unit. The motor control unit includes a waiting current control unit configured to conduct a current that can maintain the clutch to be in the connection state in the motor when the brake control unit outputs the operation signal and variable current control unit configured to proceed from current control performed by the waiting current control unit when a change in the movement state of the vehicle is detected by the detection unit during the current control performed by the waiting current control unit and adjusts the amount of conduction in the motor based on the movement state of the vehicle that is detected by the detection unit.

Abstract: A gas spring with a center longitudinal axis including a cylinder includes a piston in the cylinder that divides the cylinder into a first cylinder chamber and a second cylinder chamber. A piston rod is arranged at the piston guided out of the cylinder at a second end opposite the first end. A connection element with a socket housing is arranged at each of the first end and the free end of the piston rod for receiving a ball head. At least one of the two socket housings comprises a ball socket with a longitudinal extension and a transverse dimension, the longitudinal extension is greater than the transverse dimension. A catch element having a spring tongue is arranged at the first end for insertion together with the catch element into a cover tube that locks into a recess associated with it in the cover tube.

Abstract: A system for releasing and lifting an automobile hood includes a sensor located proximate a front location of an automobile that detects impact with an object. Also included is a hood having a striker pin operably connected to the hood for engaging a rotatable latch, wherein such engagement places the hood in the secured position. Further included is a releasing mechanism operably connected to one of the striker and the latch for lifting a front region of the hood in response to a signal from the sensor.

Abstract: A wheeled forestry tractors design, such as that for a wheel feller-buncher or a site prep tractor, is disclosed. The disclosed design includes a front axle connected to a rear axle by an articulated chassis. A cab is supported between and above the front and rear axles by the chassis. An engine and a hydraulic system are mounted opposite the rear axle from the cab and in a side-by-side relationship with the engine being aligned transversely with respect to the chassis and parallel to the rear axle. The engine is mounted transversely or parallel with respect to the rear axle and slightly behind the rear axle to improve the weight distribution between the front and rear axles or between the front and rear frames.

Abstract: A speed changer lever and a lift lever are supported to a lever supporting structure that extends from the front end of an armrest disposed laterally of a driver's eat to the forward side of the vehicle body. A speed changer lever guide face portion is provided at a transversely inner portion of an upwardly oriented face of the lever supporting structure. A lift lever guide face portion is provided at a transversely outer portion of the upwardly oriented face of the ever supporting structure. The lift lever guide face portion is set at a disposing height lower than the speed changer lever guide face portion. An upper end of the lift lever is set at a disposing height lower than the upper end of the speed changer lever. A speed changer lever guide groove and a lift lever guide groove are disposed parallel to each other.

Abstract: A power steering system having a housing having first and second housing sections, a steering shaft rotatably housed in the housing, a sensor coil, a coil bobbin having a coil holding part and a flange part and housed in the first housing section, a first held section provided at the flange part, a sensor board housed in the housing, a second held section provided at the sensor board, first and second riveting portions provided at the first housing section, and an electric motor. The first riveting portion fixes the coil bobbin to the first housing section by melting and deforming the first riveting portion with the first held section touching the first riveting portion. The second riveting portion fixes the sensor board to the first housing section by melting and deforming the second riveting portion with the second held section touching the second riveting portion.

Abstract: Electric power steering system has steering mechanism; input and output shaft side rotation angle sensors detecting rotation angles of input and output shafts; operation circuit calculating command current for an electric motor; rotation direction judging circuit judging whether rotation directions of the input and output shafts are identical; advanced-phase judging circuit judging which phase of input and output shaft side rotation angle signals (S1, S2) is advanced; normal/reverse input judging circuit judging that (i) when both rotation directions are identical and S1 is advanced, input is normal input and (ii) when both rotation directions are identical and S2 is advanced, input is reverse input; and command current correcting circuit. The command current correcting circuit corrects the command current so that when the normal input is judged, torque in the same direction as input shaft rotation direction generated by the electric motor is greater than a case of reverse input judgment.

Abstract: An acoustic energy absorption metamaterial includes at least one enclosed planar frame with an elastic membrane attached having one or more rigid plates are attached. The rigid plates have asymmetric shapes, with a substantially straight edge at the attachment to said elastic membrane, so that the rigid plate establishes a cell having a predetermined mass. Vibrational motions of the structure contain a number of resonant modes with tunable resonant frequencies.

Abstract: An intake silencer of a gas turbine capable of efficient noise reduction in which a high frequency sound-absorbing splitter group composed of a plurality of sound-absorbing splitters capable of reducing highfrequency component noise and a middle/low sound-absorbing splitter group composed of a plurality of sound-absorbing splitters capable of reducing middle/low frequency component noise are disposed separately in a gas flow direction. High frequency component noise is reduced by the high frequency sound-absorbing splitter group, and middle/low frequency component noise is reduced by the middle/low sound-absorbing splitter group.

Abstract: A silencer for a firearm which incorporates a cylindrical housing, front end cap, mean of attachment to the muzzle of a firearm, spacers and an improved cone baffle design. The proposed device incorporates a novel cone baffle design which uses concave flutes to increase surface area and thereby sound reduction. The geometry of this new cone baffle minimizes the weight of a silencer, maximizes internal volume, and effectively reduces sound and flash which are the result of a discharging firearm.

Abstract: Honeycomb sections are bonded together with seams made up of an adhesive that is carried by a honeycomb seam support or a linked-segment seam support. The seams are particularly useful for splicing together curved honeycomb sections that contain acoustic septum. The curved acoustic honeycomb sections are spliced or seamed together to form engine nacelles and other acoustic dampening structures.

Abstract: A horizontally installed muffler may include a housing, first and second tail pipes installed to front and rear ends of the housing through the housing, an introduction chamber formed inside the housing and to which an outlet of the exhaust pipe is connected, a first intermediate pipe fluid-connected to the introduction chamber and having a first discharge hole, a discharge chamber fluid-connected to the introduction chamber through the first discharge hole of the first intermediate pipe, wherein each end of the first and second tail pipes and the first discharge hole are disposed inside the discharge chamber, first and second resonance chambers formed inside the housing, a second intermediate pipe fluid-connected to the first and second resonance chambers through the discharge chamber and the introduction chamber and having an introduction hole disposed inside the introduction chamber and a second discharge hole disposed inside the discharge chamber.

Abstract: An acoustic panel is provided that includes at least one cellular core arranged between at least an internal skin and an external skin, wherein the external skin incorporates at least one fastener able to collaborate in a disconnectable fashion with a complementary fastener associated with a structure to which it is to be attached.

Abstract: The aim of the invention is to improve acoustic insulation panels of the prior art by proposing a rigid, light panel, the acoustical absorption performance of which is improved thanks to the use of a grid the structure of which enables the same to contribute to the noise absorption function. To this end, the present invention relates to an acoustic insulation panel including two facing panels (2, 4), separated by a solid structure (6) that is substantially planar and has two surfaces (7b, 7c) that are substantially planar and parallel, each of which are rigidly connected to a facing panel, said structure (6) including through-holes (6a) that form a mesh, such that the meshed structure contributes to the noise absorption function.

Abstract: It is disclosed an anti-noise panel comprising a front shell and a rear shell that are coupled together within which rubber elements of specifically designed shape and size are incorporated. Said panel can be advantageously obtained by using also recycled, injected thermoplastic material, that allows the resulting panel to be conveniently used when the wind causes strong impact, for example, along railway lines where the compression waves generated by trains traveling at high speed over time tend to disassemble the riveted aluminum/steel sound barriers currently in use.

Abstract: A remote controlled overhead ladder system including a ladder structure having at least a first section and a second section. The ladder structure can be mounted to a support structure located above an opening of the overhead surface, and can include a remote controlled lifting cable connected to the first and second sections such that upon receipt of a remote control signal, the lifting cable pivots the second section toward a front surface of the first section until the second section is oriented adjacent to the front surface of the first section, at which time the lifting cable pivots the first section and the adjacent second section as a group toward the overhead surface until the ladder sections are contained above the overhead surface.

Abstract: A ladder stand support apparatus is disclosed herein. In various aspects, the ladder stand support apparatus may include a base adapted to transport ladder stand sections of a ladder stand, and the base is adapted for attachment to a tree. In various aspects, the ladder stand apparatus may include a channel member rotatably connected to the base, the channel member adapted to receive a rail of a ladder stand within a channel defined therein.

Abstract: A stepladder includes a front section having a right front rail and a left front rail in parallel and spaced relation with the right front rail, and front steps attached to the right and left front rails. The ladder includes a rear section having a right rear rail and a left rear rail in parallel and spaced relation with the right rear rail, and a rear horizontal attached to the right rear rail and the left rear rail. The ladder includes a top to which the front and rear sections are connected. The ladder includes a tray pivotally attached to the right and left rear rails having a closed position essentially in parallel with the right and left rear rails and an opened position essentially in parallel with ground, the tray pivoting up from the closed position to the open position. A method for using a stepladder. The method includes the steps of positioning a front section and a rear section of the stepladder attached to a top of the stepladder.

Abstract: A founding chair for a founding ladder system is of a lightweight fabricated design and includes a pivotally secured top leveling plate. A ladder system for the founding chair includes a slide in engagement rack for securing of the founding chair and allowing incremental adjustment.

Abstract: A suspended access chair with a rescue system that may be utilized to access a wind turbine blade while mounted on a tower for purposes such as inspection, maintenance, cleaning, and repair of the blade is provided. The suspended access chair generally includes a chair frame assembly. Upper frame and lower frame assembly rollers are secured to the chair frame assembly and are configured for rolling contact along an edge of the blade. The suspended access chair further includes primary dextral and primary sinistral gripping arms. The gripping arms may be adjusted to conform to the shape of the blade and include rollers configured for rolling contact along a portion of the blade. A hoist is provided to raise and lower the chair along a suspension rope. The rescue system is used to lower the suspended access chair from an elevated position to the ground during emergency situations.

Abstract: The invention relates to a crash safety device having a safety rope (105) wound onto a drum, a recuperating spring tensioned by the drum during the winding of the rope, and a locking device for blocking the drum from rotation in the rope unwinding direction during the crash of a person secured by the rope. A rope drive mechanism is provided in order to unwind the rope (105) from the drum and to slowly move the rope end having a hook (290) attached thereto toward such that a person can hook onto the safety rope (105). The drive mechanism has a motor (140) driving a rope drive wheel (210) via a freewheel (200) for lowering the rope end having the hook (290). In order to rewind the rope, the motor (140) is operated in a reverse direction of rotation at a controlled rotational speed in order to limit the speed at which the rope (105) is pulled up by the tensioned recuperating spring.

Abstract: A lubricating grease charging device for automobile brake hub bearings include an operation spindle (10), an outer diameter of an upper body section thereof being slightly smaller than an inner diameter of an outer bearing (60) of the automobile brake hub (50), and an outer diameter of lower body section thereof being slightly smaller than an inner diameter of an inner bearing (70) of the automobile brake hub (50); the operation spindle (10) being provided in an outer bearing chamber and an inner bearing chamber of the automobile brake hub as well as in a cavity between the outer bearing chamber and the inner bearing chamber; a first closing member and a second closing member, which close a space in which the operation spindle (10) is disposed at two ends respectively; a lubricating grease charging passage, through which lubricating grease can be charged into the space in which the operation spindle (10) is disposed.