Described herein are latching devices where relative speed of movement between members is in part controlled or reduced via eddy current formation and in part controlled or relative motion stopped via a latch arrangement. Various embodiments are described, one being use of a conductive member; at least one magnetic field and a latch member that, prior to latching, moves independently to the at least one conductive member. A kinematic relationship exists between the conductive member and at least one magnetic field that enables the conductive member to move at a different speed relative to the magnetic field on application of an energizing force, thereby inducing an eddy current drag force by relative movement of the conductive member in the magnetic field. The eddy current drag force resulting causes movement of the conductive member causing the conductive member to engage the latch member thereby halting movement between the at least one conductive member and the at least one latch member.

A play structure having one or more monolith structures for the connection of other surfaces (e.g., deckings, water-based elements, interactive elements, etc.). Each of the monolith structures may be adjustably connected with a ground surface such that a variety of possible angles may be obtained by the monolith with respect to the ground surface. After the desired orientation of the monolith is obtained to the ground surface via the adjustable connection, the monolith may be secured in such position. Water or other fluid may be provided to the monolith structures via piping that interfaces with the monolith structures by a fluid connection that is in communication with piping disposed within the monolith structures. A fluid dumping or delivery system (e.g., based upon a tipping element that provides water to a fluid flowing surface and/or other water dispersion element) may be provided as part of the play structure.

A portable zip line emergency brake system intended to stop or slow down a zip liner (or load) on a cable while giving the control to the device user or operator on the opposite end of the zip line. As an out of control rider comes down the zip line the operator will lock the device onto the cable and roll it out onto the the zip line using a combination of sending force by the operator and gravity to meet the riders pulley. The device is adjustable for different riders estimated weights. Once the riders pulley comes in contact with this device far out on the cable it will use a lever camming action between two brake pads on the cable as it reverses direction. As the brake is engaged it will stop or slow the rider. The operator can then pull them to the end safely.

An cable trolley comprising a transport structure having a top end and a bottom end, a cable engagement device disposed on the top end, and a swivel assembly disposed on the bottom end, the swivel assembly comprises a central axis of rotation, a support ring having an opening and a central axis of rotation, a sleeve, a retainer disposed on a first end of the sleeve and an adaptor disposed on a second end of the sleeve. The second end of the sleeve is configured to be inserted through the opening until the retainer of the sleeve comes in contact with the support ring and the sleeve is co-axially rotatable relative to the support ring. There is further provided either a carrier for carrying a user or a coupling link attached to the swivel assembly where the coupling link is configured to secure a user with harnessing equipment.

An cable trolley comprising a transport structure having a top end and a bottom end, a cable engagement device disposed on the top end, and a swivel assembly disposed on the bottom end, the swivel assembly comprises a central axis of rotation, a support ring having an opening and a central axis of rotation, a sleeve, a retainer disposed on a first end of the sleeve and an adaptor disposed on a second end of the sleeve. The second end of the sleeve is configured to be inserted through the opening until the retainer of the sleeve comes in contact with the support ring and the sleeve is co-axially rotatable relative to the support ring. There is further provided either a carrier for carrying a user or a coupling link attached to the swivel assembly where the coupling link is configured to secure a user with harnessing equipment.

A mechanical assemblage similar to a traditional zipline, where a wheeled cart travels with the assistance of gravity along a guide cable strung between two points. However, this new system allows the cart to travel further, along multiple segments of guide cable and track, connected to each other by an unique attachment system which allows the cart to travel unabated, from cable to track and back to cable, by allowing the mounting attachments for the track segments to pass through an opening in the side of the cart and then close the opening to make it impossible for the guide cable to escape the cart, while riding on the guide cable. This is the most compact, simple and highly functional solution yet presented for genuine cable and track zipline system able to function with only the potential energy of gravity.

A mechanical assemblage similar to a traditional zipline, where a wheeled cart travels with the assistance of gravity along a guide cable strung between two points. However, this new system allows the cart to travel further, along multiple segments of guide cable and track, connected to each other by an unique attachment system which allows the cart to travel unabated, from cable to track and back to cable, by allowing the mounting attachments for the track segments to pass through an opening in the side of the cart and then close the opening to make it impossible for the guide cable to escape the cart, while riding on the guide cable. This is the most compact, simple and highly functional solution yet presented for genuine cable and track zipline system able to function with only the potential energy of gravity.

An extension mechanism for a zip track system within a playground environment is provided. The extension system comprises a crossover unit configured to attach to a zip track. The crossover unit comprises a crossover arch, configured to couple to the zip track. The crossover unit also comprises a support pole configured to couple to an end of the crossover arch, such that the support pole does not obstruct a path of movement under the zip track. The extension mechanism also comprises a connection mechanism configured to connect the crossover unit to the zip track system such that the crossover unit distributes the weight of the track through the crossover arch and the crossover support poles.

An extension mechanism for a zip track system within a playground environment is provided. The extension system comprises a crossover unit configured to attach to a zip track. The crossover unit comprises a crossover arch, configured to couple to the zip track. The crossover unit also comprises a support pole configured to couple to an end of the crossover arch, such that the support pole does not obstruct a path of movement under the zip track. The extension mechanism also comprises a connection mechanism configured to connect the crossover unit to the zip track system such that the crossover unit distributes the weight of the track through the crossover arch and the crossover support poles.

A trolley for lifting and/or moving a load on lines and an installation and method using it are disclosed. The trolley includes first and second side plates and sheave assemblies. Each sheave assembly includes a sheave axle with an axle shaft projecting from the first plate, a sheave cartridge on the axle shaft between the plates. Each sheave cartridge includes a pulley wheel rotatable on a bearing around an axis of the axle shaft. The axes of the shafts are parallel to one another. Retention fasteners extend thought the second plate to secure the second and first plates through the axle shafts. An installation includes a trolley and main line extending between two fixed anchorages. In use, the main line passes between the plates of the trolley, the main line contacts a sheave or pulley wheel of the trolley whereby the trolley can travel along the main line.