Abstract: A handheld belt sander with improved structure includes a main body having a rotating wheel and a mount. A support rod with a front roller is disposed on the mount. A support member with a rear roller is disposed on the mount. A tightened grinding belt encircles the rotating wheel, the front roller and the rear roller. A space is formed between the support rod and a part of the grinding belt between the front roller and the rear roller so that the grinding belt moves into the space after being pressed. Two side rollers are disposed on two sides of the support member to be adjacent to the grinding belt and are separated from the grinding belt by a gap in order to block the grinding belt from separating from the rear roller.

Abstract: Described herein is a hoist fleet system including a head block and a guide fleet assembly. The head block includes a plurality sheaves having more than one diameter. The guide fleet assembly can be arranged proximate the head block such that an array of lift lines can be routed through the plurality of sheaves of the head block into the guide fleet assembly. The guide fleet assembly further includes a plurality of guide sheaves and a plurality of plates. The plurality of plates is configured to house the plurality of guide sheaves. The plurality of guide sheaves is positioned substantially orthogonal to the head block. The plurality of plates is further arranged such that the plurality of guide sheaves is arranged on more than one plane. The plurality of guide sheaves is configured to reduce the spacing of the lift lines.

Abstract: A fairlead assembly for use with a vehicle-mounted winch and cable, the fairlead assembly is adapted to guide and control the cable as it is spooled in or out by the winch. The fairlead assembly is attached to the vehicle, and comprises a pair of horizontal rollers positioned in parallel and separated by a cable guide space, along with a pair of vertical rollers positioned to the right and left of the cable guide space. The horizontal and vertical rollers control the vertical and horizontal motion of the cable within the cable guide space. The vertical and horizontal rollers may have coplanar central axes, allowing the fairlead assembly to have a reduced profile. The vertical rollers may also each comprise a cable control groove to guide and control the horizontal and vertical motion of the cable when the winch and cable are employed to execute a sideways pull.

Abstract: The invention relates to a load-compensating rope sheave arrangement for drum winders, comprising at least two rope sheaves which are vertically guided in sliding frames and mounted on hydraulically short-circuited cylinders. Multiply redundant monitoring of the different sheave loads acting upon the rope sheaves is carried out via the hydraulic cylinders which are connected to the system control of the drum winder for communication.

Abstract: A fairlead assembly includes a frame structure having an opening therein. A pair of rollers are disposed on opposite sides of the opening. The frame structure includes a pair of opposed curved surfaces disposed between the end portions of the pair of rollers and defining a bordering surface of the opening. The frame can be cast as a unitary structure with the pair of rollers each rotatably supported by a support pin having opposite ends received in a first set of corresponding semi-cylindrical recesses in a surface of the cast frame. A clamp structure having a second set of corresponding semi-cylindrical recesses secure the support pins to the cast frame.

Abstract: A line guiding structure comprises a round guiding shaft, a fixing unit, an elastic element, a linear bearing and a wheel set. The round guiding shaft comprises a fixing and an open end. The fixing unit is used for fixing the round guiding shaft and comprises a fixing base and a bearing. The fixing base is disposed on mechanical equipment, and the bearing is disposed in the fixing base. The elastic element is sleeved on the round guiding shaft and comprises a first end and a second end. The linear bearing is sleeved on the round guiding shaft. A connecting piece is disposed on the linear bearing. The wheel set comprises a fixing plate, a supporting frame and two pulleys. The fixing plate is connected on the connecting piece. A slide hole is formed between two opposite pulley surfaces of the two pulleys for a line to pass through.

Abstract: Disclosed is an impact-reduction box through which the hoisting ropes of a mining shovel or other machine pass. The impact-reduction box includes a roller frame subassembly and spring box subassemblies attached thereto on either side. The impact-reduction box is configured so that when the hoisting cables impact the box during undesirable whipping, the roller frame subassembly will move in reaction while the spring box subassemblies will remain essentially motionless. The mining shovel will feel less of the impact of the jolting hoisting rope, and the rope will not suffer the wear and tear of frequent slapping against the machine such that the rope will be less likely to completely break.

Abstract: The invention relates to a wave power unit having a submerged station anchored on the sea bottom, a floating body floating on the sea surface and flexible connection means (3) connecting these. The submerged station has a linear generator with a reciprocating translator. According to the invention, the station includes a guiding device (9) for the flexible connection means (3). The guiding device (9) has a plurality of rotatable rollers (15a-18c). The rollers (15a-18c) form a passage for the flexible connection means (3). The invention also relates to use of the wave power unit and to a method for producing electric power.

Abstract: A fairlead assembly includes a frame structure having an opening therein. A pair of rollers are disposed on opposite sides of the opening. The frame structure includes a pair of opposed curved surfaces disposed between the end portions of the pair of rollers and defining a bordering surface of the opening. The frame can be cast as a unitary structure with the pair of rollers each rotatably supported by a support pin having opposite ends received in a first set of corresponding semi-cylindrical recesses in a surface of the cast frame. A clamp structure having a second set of corresponding semi-cylindrical recesses secure the support pins to the cast frame.

Abstract: A wiring tool and method are provided for protecting a length of wiring being pulled along a wiring path through a connection box, through use of an attachment plate arrangement of the wiring tool having first and second plate elements cooperatively configured for movement from first to second relationships with respect to one another such that the wiring tool can be removed from or placed about the length of wiring without having to feed the entire length of wiring through a closed periphery of an aperture in the attachment plate. One or more rollers mounted to the attachment plate along the aperture preclude the wiring from contacting edges of the aperture while being pulled through the wiring tool.

Abstract: A cable guiding device includes a base, upper and lower guide members disposed along a longitudinal direction, in which two ends of the upper guide member are mounted on the base and two ends of the lower guide member are mounted on the base. A slider defining a central cavity is penetrated therethrough in a lateral direction substantially perpendicular to the longitudinal direction. Upper and lower movable members are fitted slidably over the upper and lower guide members respectively, in which two ends of the upper movable member are mounted on two longitudinal side walls of the slider, and two ends of the lower movable member are mounted on two longitudinal side walls of the slider respectively. Upper and lower guiding rollers are fitted rotatably over the upper and lower movable members and disposed within the central cavity respectively.

Abstract: An improved fairlead for efficiently guiding a cable as it is wound on to or off of a drum. The improved fairlead reduces operation and labor concerns by decreasing cable wear and increasing cable life.

Abstract: A pulley for assisting in the deployment or take-up of a heterogeneous system including modules configured to be placed or being placed in an environment. These modules are connected via connecting members and the pulley is configured to be mounted rotatably on a shaft placed above the environment. The pulley includes first cooperating members configured to cooperate with the connecting members and second cooperating members configured to cooperate with the modules. The first and second cooperating members are configured to produce two successive operating states, namely, a first state during which the pulley is substantially stationary in rotation around the shaft and a second state corresponding to the passage of the modules, during which the pulley is driven in rotation around the shaft.

Abstract: A method for distributing power has developed without cutting off power supplying while a live electric wire is replaced on the electric poles by using a wire changing device for replacing the electric line, relocating the electric poles and alteration of the power distribution route. Replacement operation of the live electric wire is sequentially performed by connecting new wire and separating old wire by the wire changing device mounted on each electric pole without using bypass cable. The wire changing device comprises a cross-arm fastening unit, wire replacing unit and axial-rotating unit having a central arm fixture, axial shaft, arm coupling and position locking unit. The wire changing method comprises the steps of: mounting the wire changing device on each electric pole, replacing new and old wires without cutting off power supply, arranging the wire space, installing and tightening the new wire on each LP insulator of the electric pole, and removing the separated wire.

Abstract: A device for changing an electric wire and method for distributing power without cutting off power supply has developed for replacing the live electric line on the electric poles, relocating the electric poles and alteration of the power distribution route. Replacement operation of the live electric wire is sequentially performed by connecting new wire and separating old wire by the wire changing device mounted on each electric pole without using bypass cable. The wire changing device comprises a cross-arm fastening unit, wire replacing unit and axial-rotating unit having a central arm fixture, axial shaft, arm coupling and position locking unit. The wire changing method comprises the steps of: mounting the wire changing device on each electric pole, replacing new and old wires without cutting off power supply, arranging the wire space, installing and tightening the new wire on each LP insulator of the electric pole, and removing the separated wire.

Abstract: The present invention discloses a wire stranding roller and a new method for the same, in a LP insulator being mounted at a cross arm of pin long column and insulating and supporting a high voltage wire, which drastically improves workability and greatly reduces construction cost because the location of a wire don't need to be changed after the stranding and wire pulling, which is easy to work with and is very effective in reducing labor cost and preventing a safety accident because it can easily perform wiring and removing works no matter how large the weight of the wires would be, which is capable of precisely adjusting a dip (degree in which the wire hangs down) because the wire are placed on an insulator, which is to be mounted, during a wire pulling work and also which can solve the problem of securing a work space when carrying out the work applying and uninterruptible method by forming a open-and-shut roller capable of wire insertion and a wire stranding roller consisting of an insulator coupling openi

Abstract: A tool (7) for sampling or extracting the contents of a pit (4) is suspended from a cable (8) passing through a narrow opening (3) in a slab (2) covering the pit. A crosspiece (13) hooked to guide cables (11) which converge on it makes it possible to displace the lifting cable (8) under the slab (2) according to different movements imposed by winches (10). Thus it is possible to move the tool (7) to the desired point with great precision and without having to descend into the pit (4).

Abstract: A device for guiding a flexible elongated element such as a cable or the like, designed to guide the element during a drawing process, and comprising several rollers mounted pivoting about an axis and arranged such that they define a space for receiving the element and whereof the contour is substantially closed, the shafts of the rollers being borne by a support capable of opening into two parts whereof one is mounted articulated relative to the other; a first part is a bent flat iron such that it is formed by three abutted U-shaped brackets, two brackets being arranged facing each other and coupled each with the end of the wing of the other bracket whereof the web extends perpendicular to the parallel webs of the two brackets and the second part is a flat iron bent so as to form a bracket similar to the brackets of the first part but whereof the ends of the wings, not coupled to the web of the U-shaped bracket, are prolonged along two lugs extending outwards of the U parallel to the U web.

Abstract: A bitt with a freely rotatable line-handling surface includes a frame having a first side and a second side. The first and second sides of the frame each include first and second ends, and the first and second sides of the frame are substantially planar. The first and second sides adjoin each other at the first ends and define an angle therebetween. The first and second sides of the frame are arranged for being attachable to a surface of a marine vessel at the second ends of the first and second sides of the frame. First and second shafts extend outwardly from the planes of the first and second sides of the frame, respectively. The first and second shafts each have a longitudinal axis. The axis of each of the first and second shafts extends approximately perpendicularly to the plane of the first and second sides of the frame. First and second rollers each have an axis, and the first and second rollers each define a bore along the axis of the respective roller.

Abstract: An apparatus for guiding elongated items, such as cables, wires, hoses, and the like, onto or from spools. The apparatus includes two frame members that are pivotally and hand-releasably connected together to form an enclosed frame through which the elongated items are guided. A first pivotal and hand releasable connection is made between a first leg of the first frame member and a first leg of the second frame member. A second pivotal and hand-releasable connection is made between second legs of the frame members to provide a releasable opening of the enclosed frame. The releasable opening provides access to the enclosed frame for installation of the elongated item without requiring access to one of the ends of the elongated item to thread it through the enclosed frame. One of the frame members also includes provision for attachment to a mount, by which the enclosed frame is held in any of a plurality of selectable positions with respect to the mount.

Abstract: A method of using an apparatus for unwrapping tangled, high voltage subconductors. The apparatus includes sheaves that hold each subconductor. Each subconductor is disposed in a gap between an upper and lower sheave. The invention can accommodate either two parallel subconductors, three subconductors arranged in a triangular formation, or a quad or rectangular arrangement. Once installed on the subconductors, the device is moved along the line so as to unwrap the subconductors.

Abstract: An elevator rope guide assembly prevents or lessens vibrations of the ropes connected to the cab by means of auxiliary guide rollers pairs disposed on either side of the cab sheave. Additionally, the cab sheave has rope-engaging grooves which are substantially deeper than the diameter of the rope and include outwardly divergent sides.

Abstract: A roller fair-sheet of the type including a mounting with a frame, which is articulated to such mounting by way of a pin and at least three revolving horizontal rollers arranged parallel to each other and transversal to the sheet path in such a way that their envelope provides a cylindrical surface of circular section with small curvature or conic section with great curvature, and the central roller axis preferably coincides with the axis of the articulated pin, while the lateral rollers can translate in space moving parallelly to the axis of the central roller, keeping constant the curvature of the conic section.

Abstract: In an electric winch system, wherein the system includes an electric winch provided on the outside of a vehicle body, a DC power source provided within an engine room, a pair of connector parts consisting of one connector part connected to the DC power source and exposed to the outside of the vehicle body, and other connector part connectable to one connector part, and a control switch connected to the other connector part, thereby controlling the running of an electric motor of the electric winch by way of the pair of connector parts, when the pair of connector parts are joined together, this electric winch system comprises; a power source switch provided between the DC power source and the electric winch in the vehicle body; and a power-source-switch controlling means adapted to turn the power source switch to a close position only when the pair of connector parts are joined together.

Abstract: In a military vehicle having a powered winch, the improvement comprising a able guide that includes three rollers having concave edge surfaces guidably engaged with segmental surface areas of the cable. One of the rollers is carried by an auxiliary frame that can be swung away from its normal position to thread or unthread the cable. The three rollers are equi-spaced around the cable guide space so that normal cable loads are borne by at least two of the rollers.

Abstract: A pair of pin assemblies located at the stern of a marine vessel for guiding and controlling cables involved in anchor handling procedures, the pins assuming a vertical position when in use and a horizontal position when not in use, the top of the pin assemblies being flush with the vessel's deck when the pins are not in use.

Abstract: A front bumper for a two- or four-wheel drive utility vehicle permits simultaneous mounting of a power winch and snow removal blade assembly, such that both the winch and snow blade can be used, and remain attached to the vehicle at the same time. The snow removal blade includes a riser portion providing additional clearance between the blade mounting portion of the front bumper and ground beneath the vehicle when the snow removal blade assembly is removed from the vehicle.