192 clutches and power-stop control – Clutches – Operators
Reexamination Certificate
2007-08-30
2010-10-19
Bonck, Rodney H (Department: 3655)
192 clutches and power-stop control
Clutches
Operators
C192S084700, C192S10700R
Reexamination Certificate
active
07815029
ABSTRACT:
In an electromagnetic clutch apparatus for forming a magnetic path in a circulating shape by an electromagnet at a pilot clutch alternately arranged with a main outer plate and a main inner plate and capable of controlling to transmit a torque between a clutch housing and a cam plate by being engaged in an axial direction and at a surrounding of a nonmagnetic portion continuously formed in the axial direction of a middle portion in a diameter direction of the pilot clutch to carry out an engaging, the nonmagnetic portion is formed by through holes in a circular arc shape having bridge portions for maintaining a shape in a diameter direction of the pilot clutch therebetween in a peripheral direction, and the bridge portion is divided in the diameter direction of the pilot clutch and a nonmagnetic member is interposed between divisions thereof.
REFERENCES:
patent: 2453811 (1948-11-01), Pennington
patent: 4305198 (1981-12-01), Kanamaru et al.
patent: 4685202 (1987-08-01), Booth et al.
patent: 5870818 (1999-02-01), Bisaga
patent: 6454156 (2002-09-01), Taras et al.
patent: 7004297 (2006-02-01), Ando et al.
patent: 2000-234634 (2000-08-01), None
esp@cenet patent abstract for Japanese Publication No. 2000234634, Publication date Aug. 29, 2000 (1 page).
Bonck Rodney H
GKN Driveline Torque Technology KK
Osha & Liang LLP
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