Abstract: A containment device, including a housing, a first axle rotatably connected to the housing, the first axle including at least one gear having a plurality of teeth, a second axle rotatably connected to the housing, the second axle including at least one pawl operatively arranged to engage the plurality of teeth, and a line connected to the first axle and engaged with the second axle.

Abstract: An apparatus and system for placing, or resetting, power line cable to a power support structure, such as a transmission tower includes a remote aerial manipulation platform”) utilizing an unmanned aerial vehicle containing a bracket and a rotatable spool attached to the bracket. The spool includes a length of pre-lead line wound on the body of the spool. A reel system on the unmanned aerial vehicle provides appropriate tension to the rotatable spool. A control system enables the transmission of informational messages from the unmanned aerial vehicle to a ground control system.

Abstract: A lift assembly includes an article to be lifted between a lowered position and a raised position, a drive element coupled to the article, a power mechanism coupled to the drive element, and a power transfer mechanism coupled between the power mechanism and the drive element. The power transfer mechanism includes control electronics having a first upward limit switch adapted to deactivate the power mechanism when the article is lifted to a first upward height, and a second upward limit switch adapted to deactivate the power mechanism when the article is lifted to a second upward height higher than the first upward height.

Abstract: A load handling device is for lifting and lowering a load. The load handling device includes an elongated member adapted to be connected to a load and a capstan, including one or more sheaves, through which the elongated member is running, the capstan defining a low tension side and high tension side of the elongated member. The load handling device further comprises a tension regulating member adapted to operate at the low tension side of the elongated member. A method is for lifting and lowering a load via a load handling device.

Abstract: A self-compensating tension control device for regulating the withdrawal of filamentary material from a spool includes a fixed support that maintains an inverted cam surface and a spindle assembly rotatably carrying the spool. A tension force applied to the filamentary material, in opposition to a biasing force, moves the spindle assembly linearly in relation to the fixed support. A braking mechanism includes a brake drum rotatable with the spindle assembly, a friction band adapted to engage the brake drum and a rocker arm that engages the cam surface. When the tension force applied to the filamentary material is reduced and unable to overcome the biasing force, the cam roller engages the cam surface and causes the friction band to generate a braking force on the brake drum. Withdrawal of the filamentary material at a regular rate occurs when the biasing force is balanced with the tension force.

Abstract: When current collecting wires are laid in parallel with each other on a solar cell on which a photosensitive film is formed, a wire tension adjusting mechanism is provided which includes a bobbin holder shaft pivotally held on the side of a frame in a bobbin cassette in a wiring apparatus and a wire bobbin is detachably fixed on the bobbin holder shaft. The wire tension adjusting mechanism further includes a pre-load means for adjusting the torque of the bobbin holder shaft and the tension of each current collecting wire to be drawn out from the wire bobbin held by the bobbin shaft is adjusted.

Abstract: A self-compensating tension control device for regulating the withdrawal of filamentary material from a spool includes a fixed support that maintains a cam surface and a spindle assembly rotatably carrying the spool. A tension force applied to the filamentary material, in opposition to a biasing force, moves the spindle assembly linearly in relation to the fixed support. A braking mechanism includes a brake drum rotatable with the spindle assembly, a brake shoe adapted to engage the brake drum and a rocker arm that engages the cam surface. When the tension force applied to the filamentary material is reduced and unable to overcome the biasing force, the cam roller engages the cam surface and causes the brake shoe to generate a braking force on the brake drum. Withdrawal of the filamentary material at a regular rate occurs when the biasing force is balanced with the tension force.

Abstract: A self-compensating tension control device for regulating the payout of filamentary material from a spool includes a fixed support and a spindle assembly rotatably carrying the spool. A tension force applied to the filamentary material, in opposition to a biasing force, moves the spindle assembly linearly in relation to the fixed support. An eddy current braking system includes a conductive member rotatable with the spindle assembly and a magnetic member carried by the fixed support. The spindle assembly and the conductive member move linearly toward a side-by-side relationship with the magnetic member when the tension force applied to the filamentary material is reduced and unable to overcome the biasing force. Linear movement of the spindle assembly and the associated conductive member can be obtained by either a straight line mechanism or a linear ball bushing mechanism. A supplemental brake may also be used.

Abstract: A spool (1) mounted on a rotating shaft (2) with a brake drum (3) attached to it is mounted onto a swing lever (4). The swing lever is hinged on a creel channel (6). A loading-force is pushing the brake drum against a fixed brake shoe (9) which is located at such an angle to the swing lever that the tension in the withdrawn strand (10) is not dependant on the diameter of the spool but is constant.

Abstract: An idler roll brake in a paper handing machine wherein the roll brake employs a brake shoe mounted to the roll end bearing. The brake shoe slides forward to bring the brake shoe against the interior surface of the roll. An electromagnet positioned external to and mounted closely spaced from the cylindrical shell the roll attracts a ferromagnetic armature or permanent magnet mounted to the brake to pull the brake shoe into engagement with the inner surface of the roll.

Abstract: Method and relevant device for stabilizing and regulating the tension of a thread (16) being unwound from a bobbin (18). The method envisages the addition to the unwinding tension (td), of a resistant tension automatically variable in relation to the intensity of the unwinding tension (td).

Abstract: An idler roll brake in a paper handing machine employs an electromagnet positioned close to the periphery all of the idler roll which interacts with and induces eddy currents a conducive roll and a gear shaped steel ring fitted within the conducive roll. The electromagnet is arranged transverse to the axis of the roll and has three poles. The gear-shaped steel ring forms opposite poles which are attracted to the poles of the electromagnet which bring the roll to complete stop. An alternative embodiment roll brake employs a brake shoe mounted to the roll end bearing. The brake shoe slides forward to bring the brake shoe against the interior surface of the roll. An electromagnet positioned beneath the roll attracts a ferromagnetic armature or permanent magnet mounted to the brake to pull the brake shoe into engagement with the inner surface of the roll.

Abstract: The present invention relates to an improved bead wire letoff assembly and method of operation that controls the tension of wire being pulled from a wire spool mounted to the bead wire letoff assembly. The improved wire letoff assembly can accurately control the rotational speed of the wire spool and incorporates a cam plate and tension arm linkage to control the braking force applied to the wire spool.

Abstract: A winder comprises a base, a wire wheel, and a braking mechanism. The base has a face plate which is provided with a main shaft and at least one arcuate hole. The wire wheel is rotatably mounted on the main shaft. The braking mechanism comprises a one-way bearing, a shaft sleeve, a brake disk, two friction pads, a clamp seat, and an adjustment knob. The one-way bearing is disposed in the axial hole of the wire wheel. The shaft sleeve is fitted over the main shaft such that a first end thereof is in contact with the inner edge of the bearing, and that a second end thereof is fastened with the brake disk. The friction pads are fastened with the shaft sleeve and located at two sides of the brake disk. The clamp seat is slidably disposed on the shaft sleeve and is fastened with the adjustment knob. The magnitude of frictional force between the brake disk and the friction pads is adjusted by turning the adjustment knob, thereby resulting in a braking effect on the wire wheel in motion.