Magnetic spring and actuators with multiple equilibrium...

Details Magnetic spring and actuators with multiple equilibrium... Magnetic spring and actuators with multiple equilibrium...

2007-09-04

2007-09-04

Nguyen, Tran (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S012060, C310S103000

Reexamination Certificate

active

11034258

ABSTRACT:
Arrays of magnets configured to create linear or rotary magnetic springs with multiple equilibrium points. Some of the equilibrium points are stable, while others are unstable. No mechanical contact is required between moving and stationary elements of the magnetic springs, resulting in a virtually unlimited lifetime. The magnetic springs can be utilized in conjunction with low force electromagnetic actuators to implement multi-step linear or rotary actuators with high force, very short movement time between unstable equilibrium points, and with near-zero holding power required to maintain actuator position at any unstable equilibrium point. Specific applications that embody the present invention may include, but are not limited to, optical filters, linear valves, or any mechanism that would benefit from an efficient magnetic spring.

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