Patent ID: 8133143

Claim:
A compact gear reducer electric motor assembly, comprising: an internal brake; a high speed electric motor interconnected with a gear reducer having substantial gear reduction; said high speed electric motor includes a shaft and windings, said windings of said electric motor are radially spaced from said shaft creating a space between said shaft and said windings of said motor, said internal brake mounted substantially radially between said shaft and said windings of said electric motor, and, said internal brake being operable against a spring biasing said brake into engagement with ground; said gear reducer includes a stationary spindle; said brake electrically actuated to permit transmission of energy to said gear reducer; said gear reducer includes input, intermediate and output planetary stages; said stationary spindle includes a first ring gear; said input and intermediate planetary stages residing within said stationary spindle and engaging said first ring gear; said gear reducer includes an output ring gear, said output ring gear being rotatable with respect to said stationary spindle; and, said output planetary stage of said gear reducer drives said rotatable output ring gear.