Patent ID: 7791240
Filing Date: 2010-09-07
Classification: H02K,Y10T

Abstract:
1. A stir-welded rotor comprising: a stack of laminations, each of the laminations comprising spaced-apart slots arrayed on an outer circumference; a first end ring comprising a first inner slotted ring and a first outer slotted ring; a second end ring comprising a second inner slotted ring and a second outer slotted ring; slot bars registering with the spaced-apart slots of each of the laminations, the slot bars each having a first extremity engaging the first end ring between the first inner slotted ring and the first outer slotted ring and extending above the stack of laminations, and a second extremity engaging the second end ring between the second inner slotted ring and the second outer slotted ring and extending below the stack of laminations; and a first stir weld securing the first extremities of adjacent slot bars to the first inner slotted ring and the second outer slotted ring, and a second stir weld securing the second extremities of adjacent slot bars to the second inner slotted ring and the second outer slotted ring.