A hoist system having a drum primarily self-contained within a batten, for raising and lowering lighting, sound equipment, curtains and the like in a performance environment. The hoist system may be adapted with safety mechanisms including an overload sensor and/or a slack line detector. The system may be provided in the form of a point hoist. The compact system is highly scalable to a variety of spaces and applications, including school and public theaters and concert halls, as well as some homes, private business, etc.

A hoist system having a drum primarily self-contained within a batten, for raising and lowering lighting, sound equipment, curtains and the like in a performance environment. The hoist system may be adapted with safety mechanisms including an overload sensor and/or a slack line detector. The system may be provided in the form of a point hoist. The compact system is highly scalable to a variety of spaces and applications, including school and public theaters and concert halls, as well as some homes, private business, etc.

A translating body rescue hoist includes a fixed frame and a carrier supported by the fixed frame. The carrier rides on bearings such that the carrier is capable of reciprocating relative to the fixed frame. The carrier supports a cable drum and a level wind mechanism. A drivetrain is mounted within the cable drum and driven by a motor mounted to the carrier. The drivetrain drives the cable drum, and the level wind mechanism is driven off the cable drum. As the cable drum rotates, a cable is fed off of the drum and through a fixed payout point. A follower is fixed to the frame and interlocked with the level wind mechanism such that rotating the level wind mechanism drives the carriage in a reciprocating manner. The level wind mechanism is self-reversing allowing the stationary frame to reciprocate while the level wind mechanism is rotated in a single direction.

A system may include an aerial vehicle, a perch platform configured to receive the aerial vehicle, and a ground station coupled to the aerial vehicle via a tether. The ground station may include a winch including a winch drum configured to move laterally and spin in a manner such that the tether is wound onto on the winch drum in a repeating pattern, possibly utilizing a fixed position levelwind. The system may additionally include a tower around which the winch and the perch platform can rotate about a vertical axis relative to the tower. The system may further utilize the tether forces on the levelwind to help move the perch platform around the vertical axis or be driven actively by a motor.

A system may include an aerial vehicle, a perch platform configured to receive the aerial vehicle, and a ground station coupled to the aerial vehicle via a tether. The ground station may include a winch including a winch drum configured to move laterally and spin in a manner such that the tether is wound onto on the winch drum in a repeating pattern, possibly utilizing a fixed position levelwind. The system may additionally include a tower around which the winch and the perch platform can rotate about a vertical axis relative to the tower. The system may further utilize the tether forces on the levelwind to help move the perch platform around the vertical axis or be driven actively by a motor.

A hoist system having a drum primarily self-contained within a batten, for raising and lowering lighting, sound equipment, curtains and the like, often in a performance environment. The compact system is highly scalable to a variety of spaces and applications, including school and public theaters and concert halls, as well as some homes, private business, etc. The hoist system may be adapted with safety mechanisms including an overspeed detector, which may comprise a centrifugal detection mechanism coupled to an elongate member of the system; dampening means; a compact mechanism for trimming or adjusting an operative length of elongate member; stabilizing pipe shaft bearings; elongate member diverter pulley mechanisms load balancing termination points. Additional features include various alternative combination hoist implementations and orientations, and alternative incorporated attachment mechanisms for use with the hoist system.

A reeling device for the controlled coiling and uncoiling of a cable has a first end that is fixed and a second end that is movable relative to the first end. The cable is unbroken between its first and second ends. The reeling device includes first and second reels about which the cable is coiled. The first and second reels are coaxial. The first reel is fixed against rotation and axial movement, and the second reel is rotatable about the axis with such rotation causing axial movement of the second reel relative to the first reel.

A reeling device for the controlled coiling and uncoiling of a cable has a first end that is fixed and a second end that is movable relative to the first end. The cable is unbroken between its first and second ends. The reeling device includes first and second reels about which the cable is coiled. The first and second reels are coaxial. The first reel is fixed against rotation and axial movement, and the second reel is rotatable about the axis with such rotation causing axial movement of the second reel relative to the first reel.

A transfer device for limiting a twisting of a link between an end of the fixed link with respect to a fixed part and an end of the fixed link with respect to a revolving part that can revolve with respect to the fixed part about an axis of rotation, the transfer device for a link includes a composite drum comprising a set of drums aligned on the axis of rotation about which the link can be wound, the set of drums comprising a fixed drum intended to be secured to the fixed part in rotation about the axis of rotation, a revolving drum intended to be able to revolve about the axis x with respect to the fixed part and a set of at least one loose drum interposed between the fixed drum and the revolving drum, each loose drum being free to rotate about the axis of rotation with respect to the revolving drum and the fixed drum and having a height on the axis.