A sport harness for use with a kite or other propulsive device having a quick release feature whereby the user may release himself or herself from the harness while being pulled by a kite. The quick release feature including an interconnection between a spreader bar and one part of a two part waist band closure whereby releasing one end of the spreader bar causes the closure to separate. A harness having vent openings. An overlay for impeding tangling of lines with a harness.

A gliding sports apparatus, which is preferably controllable by upper body and/or arms and/or hands and/or fingers, extends from a leading edge to a trailing edge in an intended direction of overflow when it is fastened to a user. The gliding sports apparatus comprises at least two shoulder ribs which extend substantially from the leading edge to the trailing edge, and wherein each of the shoulder ribs is connectable fixedly to an upper arm of the user but is rotatable about the axis of the upper arm, two hand ribs which extend substantially from the leading edge to the trailing edge, and wherein each of the hand ribs is connectable fixedly to a hand of the user, a back airfoil which is formed between the two shoulder ribs, and two arm airfoils, which are formed in each case between a shoulder rib and a hand rib.

A gliding sports apparatus, which is preferably controllable by upper body and/or arms and/or hands and/or fingers, extends from a leading edge to a trailing edge in an intended direction of overflow when it is fastened to a user. The gliding sports apparatus comprises at least two shoulder ribs which extend substantially from the leading edge to the trailing edge, and wherein each of the shoulder ribs is connectable fixedly to an upper arm of the user but is rotatable about the axis of the upper arm, two hand ribs which extend substantially from the leading edge to the trailing edge, and wherein each of the hand ribs is connectable fixedly to a hand of the user, a back airfoil which is formed between the two shoulder ribs, and two arm airfoils, which are formed in each case between a shoulder rib and a hand rib.

A gliding sports apparatus, which is preferably controllable by upper body and/or arms and/or hands and/or fingers, extends from a leading edge (40) to a trailing edge (41) in an intended direction of overflow when it is fastened to a user (30). The gliding sports apparatus (25, 25) comprises at least two shoulder ribs (1) which extend substantially from the leading edge (40) to the trailing edge (41), and wherein each of the shoulder ribs (1) is connectable fixedly to an upper arm (34) of the user (30) but is rotatable about the axis of the upper arm, two hand ribs (3) which extend substantially from the leading edge (40) to the trailing edge (41), and wherein each of the hand ribs (3) is connectable fixedly to a hand (38) of the user (30), a back airfoil (8) which is formed between the two shoulder ribs (1), and two arm airfoils, which are formed in each case between a shoulder rib (1) and a hand rib (3).

A gliding sports apparatus, which is preferably controllable by upper body and/or arms and/or hands and/or fingers, extends from a leading edge (40) to a trailing edge (41) in an intended direction of overflow when it is fastened to a user (30). The gliding sports apparatus (25, 25) comprises at least two shoulder ribs (1) which extend substantially from the leading edge (40) to the trailing edge (41), and wherein each of the shoulder ribs (1) is connectable fixedly to an upper arm (34) of the user (30) but is rotatable about the axis of the upper arm, two hand ribs (3) which extend substantially from the leading edge (40) to the trailing edge (41), and wherein each of the hand ribs (3) is connectable fixedly to a hand (38) of the user (30), a back airfoil (8) which is formed between the two shoulder ribs (1), and two arm airfoils, which are formed in each case between a shoulder rib (1) and a hand rib (3).

A microsurgical handle and instrument may include an actuation structure having an actuation structure distal end and an actuation structure proximal end, a plurality of actuation arms of the actuation structure, and an actuation structure base. A compression of the actuation structure may be configured to extend the actuation structure distal end relative to the actuation structure proximal end. A compression of the actuation structure may be configured to expand an extension joint of an actuation arm of the plurality of the actuation arms. A decompression of the actuation structure may be configured to retract the actuation structure distal end relative to the actuation structure proximal end. A decompression of the actuation structure may be configured to collapse an extension joint of an actuation arm of the plurality of actuation arms.

In an embodiment, a ducted fan propulsion system comprises an outer cowling, adapted to form a duct. The duct houses one or more fan blades rotating about a central axis. One or more motors are in communication with the fan blades and in communication with a power source. The duct is transversed by a plurality of spokes. In an embodiment, multiple ducts are housed within an outer cowling, with each duct comprising one or more rotatable fan blades, one or more central axes, and one or more motors. In each embodiment, one or more members are attached to the ducted or multi-ducted fan propulsion system and extend to a user or vehicle. The members terminate in a handle further comprising a throttle adjuster.