PROTECTIVE DEVICE OF THREE-PHASE MOTOR

Title:

PROTECTIVE DEVICE OF THREE-PHASE MOTOR

Document Type and Number:

WIPO Patent Application WO/2010/052750

Kind Code:

A1

Abstract:

A protective device of three-phase motor comprises a protrusion (35) provided in a housing (22) constituting an enclosed container (21), three conductive terminal pins (26) secured airtightly to a metal plate (23) constituting the enclosed container (21), three fixed contacts (27) bonded to the conductive terminal pin (26), a thermal response plate (32) drawn into the shape of a plate and reversing the curving direction at a predetermined temperature, three movable contacts (33) bonded to the thermal response plate (32) and constituting three pairs of opening/closing contact along with the fixed contacts (27), and a resilient member (34) for clamping the central portion of the thermal response plate (32) between the protrusion (35) and urging the thermal response plate (32) in the direction receding from the fixed contact (27).

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Inventors:

HIGASHIKATA ISAO (JP)

Application Number:

PCT/JP2008/003177

Publication Date:

May 14, 2010

Filing Date:

November 05, 2008

Export Citation:

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Assignee:

UBUKATA IND CO LTD (JP)
HIGASHIKATA ISAO (JP)

International Classes:

H01H37/54

Foreign References:

JPS5191774U	1976-07-22
JPS5699938A	1981-08-11
JPS4634532B1
JPS55165534A	1980-12-24
JPS5342145U	1978-04-11
US3452313A	1969-06-24
JPH0279532A	1990-03-20

Other References: