Abstract: An electric power apparatus includes a main planar body having a circular opening that supports a brushless direct-current (BLDC) motor. The motor includes a stator, a rotor, a motor spindle extending through the circular opening, a first end cap formed on a first side of the stator and mounted on the main planar body; and a second end cap formed on a second side of the stator and secured to the first end cap to form a substantially watertight seal around the stator and the rotor. A ratio of a maximum power output of the motor when powered by at least one battery pack to a height of the motor as measured from an upper surface of the main planar body to a top surface of the motor is greater than or equal to approximately 34 watts/mm.

Abstract: An electric motor is provided including a stator, a rotor, a motor spindle coupled to the rotor and extending along a center axis, a first end cap formed on a first side of the stator, a second end cap formed on a second side of the stator and secured to the first end cap to form a first compartment around the stator and the rotor, an electro-magnetic brake module disposed on a side of the second end cap opposite the stator and engaged with the motor spindle, and a motor cover mounted on the second end cap to form a second compartment around the electro-magnetic brake module. The first end cap, the second end cap, and the motor cover form a substantially watertight seal around the stator, the rotor, and the position sensor assembly.

Abstract: A play system includes a support structure, having a bottom end and a top end, vertically oriented relative to a surface such that the bottom end contacts the surface and the top end is above the surface. The play system includes a belt having flexible portions and rigid portions that forms an ascending structure around the inside of the support structure such that it ascends from the bottom end of the support structure to the top end of the support structure. The play system includes a plurality of clamps that couple the support structure and the belt.

Abstract: A play system includes a support structure, having a bottom end and a top end, vertically oriented relative to a surface such that the bottom end contacts the surface and the top end is above the surface. The play system includes a belt having flexible portions and rigid portions that forms an ascending structure around the inside of the support structure such that it ascends from the bottom end of the support structure to the top end of the support structure. The play system includes a plurality of clamps that couple the support structure and the belt.