Abstract: A wind turbine and braking system. A wind turbine may include a tower and a nacelle coupled to the tower, the nacelle rotatable with respect to the tower about a rotation axis. A collar may be centered on the rotation axis and rigidly connected to one of the nacelle and the tower. A first cable may be wrapped about the collar in a first direction. A first tensioning device may be anchored to a structure of the other of the nacelle and the tower, the first tensioning device configured to selectively apply tension to a first end of the first cable to apply a braking torque to the collar.

Abstract: Disclosed is an apparatus useful by at least one human being for holding tools and various other implements. The apparatus includes first and second holding units defining, respectively, a first space for holding tools and a second space for holding other implements; first and second supports associated with the first and second holding units, respectively; and a platform unit associated with both holding units, capable of being supported by both supports and including at least one substantially flat surface capable of supporting the weight of the human being.