High-performance piston core for a magnetorheological damper

Details High-performance piston core for a magnetorheological damper High-performance piston core for a magnetorheological damper

2005-09-27

2005-09-27

Look, Edward K. (Department: 3745)

Power plants

Pressure fluid source and motor

Utilizing a mixture, suspension, semisolid or...

C188S267000

Reexamination Certificate

active

06948312

ABSTRACT:
A high-performance piston core including a first piston cylinder and a second piston cylinder, with a piston center longitudinally disposed between and magnetically coupling the first piston cylinder and the second piston cylinder. The piston center is made of high-performance magnetic material, such as Cobalt steel (CoFe), Silicon steel (SiFe), Vanadium/Cobalt steel (Permendur), alloys thereof, or the like. The high-performance magnetic materials exhibit high magnetic permeability and reduce the magnetic reluctance of flux bottlenecks. In addition, high-performance magnetic materials typically saturate at a higher flux density than the conventional magnetic materials. The first piston cylinder and the second piston cylinder can be made of conventional magnetic material, such as low-carbon steel. The first piston cylinder can include a ring disposed about an end, where the end is longitudinally attached and magnetically coupled to the piston center.

REFERENCES:
patent: 5947238 (1999-09-01), Jolly et al.
patent: 6655511 (2003-12-01), Lun et al.

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