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USPatentGranted
B2

Induction motor, compressor and refrigerating cycle apparatus

Granted 25 Feb 2014 · 2 office actions

Assignee: Mitsubishi Electric Corporation

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Attorney: Attorney · Log in to unlock

Inventors: Koji Yabe, Takahiro Tsutsumi · Examiner: Tran Nguyen · AU 2834 · TC 2800

Application
13/233,448
filed 15 Sep 2011
Publication
US 20120159983
published 28 Jun 2012
Patent· this page
US 8,659,203
granted 25 Feb 2014
4
Claims
1 independent
119
File wrapper
transactions
2031
20-year term
term adjustment not held
none
Litigation
checked
2
Classifications
H02K17/16
19
Citations
19 cites · 0 cited by

Life of the patent

8 dated events
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Abstract

The efficiency of an induction motor is improved while suppressing the generation of magnetic flux saturation of a rotor core. In an induction motor, “a magnetic path width of a rotor†which is the product of a circumferential width of a rotor tooth formed in the rotor and the number of rotor teeth is equal to or larger than “a magnetic path width of a stator†which is the product of a circumferential width of a stator tooth formed in the stator and the number of stator teeth.

Claims

4 · 1 independent · depth 4
1234
4 granted claims

Classifications

2 codes
IPC · International Patent Classification
Section H — Electricity
  • H02K17/16
USPC · US Patent Classification
310/211

Claim changes

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File wrapper

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Pendency
2.4 y
894 days filing → grant
Office actions
1
after a restriction
Responses
1
no RCE
Examiner
Tran Nguyen
art unit 2834 · TC 2800
Law firm
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Citations: 19 back · 0 forward

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Term & fees

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Priority chain

1 priority documents
›Priority documents — 1
TypeDocumentDate
related publicationUS 20120159983 A128 Jun 2012

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Citations

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