Patent ID: 7851961

Claim:
A motor rotor, comprising: (a) rotor having a substantially circular peripheral edge; (b) at least one channel inwardly opening from said peripheral edge and forming an inner entrance and a peripheral entrance; (c) a rotor bar slot, wherein said rotor bar slot has a slot base, two substantially parallel side walls originating from said slot base and each side wall terminating at a slot angled tip wall, and wherein said slot angled tip wall connects said rotor bar slot to said inner entrance of said channel, and thereby forming said motor rotor; and (d) a rotor bar within the rotor bar slot, the rotor bar having a rotor bar base, two substantially parallel side walls originating from said bar base and each side wall terminating at a bar angled tip wall, so as to form a substantially rectangular lower body and a substantially triangular upper body, with the bar angled tip wall recessed within the channel below the peripheral edge.