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.:
Date of Patent:
May. 07, 2013
Filed:
Jun. 29, 2012
Applicant:
Makoto Funakubo, Minamitsuru-gun, JP;
Inventor:
Makoto Funakubo, Minamitsuru-gun, JP;
Assignee:
FANUC Corporation, Minamitsuru-gun, Yamanashi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 5/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A housing of an electric motor is fitted with an oil seal having the function of sealing an output shaft (rotary shaft) of the motor. The housing is provided with a hole for motor airtightness testing communicating with an internal space of the motor. A local or annular projection configured to close the hole for motor airtightness testing, thereby maintaining the airtightness of the internal space of the electric motor, is disposed on that surface of the oil seal which faces the housing.