Linear actuator with burn-out-proof coil

Details Linear actuator with burn-out-proof coil Linear actuator with burn-out-proof coil

1998-11-12

2000-03-28

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Linear

H02K 4100

Patent

active

060435739

ABSTRACT:
A method for manufacturing a linear voice coil actuator, capable of continuously generating a one hundred kilogram force with less than two amperes of current, requires using a coil for generating an electrical field and an unsaturated permanent magnet circuit for generating a magnetic field. In the method of manufacture, a flat surface of the electrical coil is positioned parallel to a flat surface of the magnet to establish a gap therebetween. Before operating the actuator, when no current is running through the coil, a distance of approximately 0.75 mm is established across the gap. Subsequently, during operation of the actuator, when a current of less than approximately two amperes is driven through the coil, the electrical field generated by the coil interacts with the magnetic field of the magnet to generate as much as a 100 kg force on the coil.

REFERENCES:
patent: 4498023 (1985-02-01), Stout
patent: 4575652 (1986-03-01), Gogue
patent: 4809430 (1989-03-01), Maruyama et al.
patent: 5175456 (1992-12-01), Neff et al.
patent: 5703417 (1997-12-01), Kelly
patent: 5726508 (1998-03-01), Neff et al.
patent: 5777403 (1998-07-01), Yuan
patent: 5798582 (1998-08-01), Neff

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