Damped coil construction for VCM

Details Damped coil construction for VCM Damped coil construction for VCM

1983-02-28

1986-07-22

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Linear

310 27, 336208, H02K 4102

Patent

active

046021752

ABSTRACT:
A coil for a voice coil actuator employed in a transducer positioning system of a disk file is disclosed in which the coil is constructed to minimize vibrations in a direction parallel to the coil axis which tend to occur as a result of rapidly energizing the coil during the seek and track following modes of the positioning system. The coil is characterized by a composite layer of viscoelastic material and aluminum foil disposed between the coil bobbin and the coil winding where the aluminum foil functions to increase the shear deformation of the viscoelastic material and its modulus of rigidity.

REFERENCES:
patent: 3194992 (1965-07-01), Brown
patent: 3484628 (1969-12-01), Barna
patent: 4053975 (1977-10-01), Olbrich
patent: 4144466 (1979-03-01), Hatch

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