Invention Grant
- Patent Title: Exposed bar induction motor with punched-to-size air gap
- Patent Title (中): 带有冲孔尺寸气隙的裸露感应电动机
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Application No.: US12763942Application Date: 2010-04-20
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Publication No.: US08288913B1Publication Date: 2012-10-16
- Inventor: Thomas M. Bourquin , Samuel E. Mayberry , John H. Hussey , Alan D. Crapo
- Applicant: Thomas M. Bourquin , Samuel E. Mayberry , John H. Hussey , Alan D. Crapo
- Applicant Address: US MO St. Louis
- Assignee: Nidec Motor Corporation
- Current Assignee: Nidec Motor Corporation
- Current Assignee Address: US MO St. Louis
- Agency: Hovey Williams LLP
- Main IPC: H02K1/06
- IPC: H02K1/06 ; H02K15/02

Abstract:
An electric induction motor assembly includes a rotor assembly and a stator assembly. The rotor assembly includes an exposed bar rotor comprising a plurality of axially stacked, punched-to-size rotor laminations. The stator assembly includes a plurality of axially stacked, punched-to-size stator laminations. Each of the laminations presents an axial thickness of less than 0.024 inches. The rotor assembly and the stator assembly cooperatively define a radially extending air gap between a radially outer periphery of the rotor assembly and a radially inner periphery of the stator assembly that is less that 0.012 inches.
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