The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 7816821 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 19, 2010

Filed:

Mar. 26, 2007
Applicants:

Hideaki Kimura, Okazaki, JP;

Shingo Hashimoto, Anjo, JP;

Inventors:

Hideaki Kimura, Okazaki, JP;

Shingo Hashimoto, Anjo, JP;

Assignee:

Aisin AW Co., Ltd., Anjo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K 3/34 (2006.01); H02K 3/30 (2006.01); H02K 15/12 (2006.01);
U.S. Cl.
CPC ...
Abstract

A varnish impregnation state determination method for determining a varnish impregnation state of a core assembly that is formed by disposing a coil inside a slot of a motor core and impregnating the coil and an interior of the slot with a varnish, including applying an alternating current voltage between the motor core and the coil to determine tan δ that serves as a dielectric dissipation factor; and determining that the varnish impregnation state of the core assembly is normal when a value of the tan δ is equal to or smaller than a predetermined non-defective article reference value.


Find Patent Forward Citations

Kimura, Hideaki. (2010). Method for judging a status of varnish impregnation (U.S. Patent No. 7816821). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7816821

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