Viscoelastic substance and objective lens driving apparatus with

Details Viscoelastic substance and objective lens driving apparatus with Viscoelastic substance and objective lens driving apparatus with

1993-01-07

1994-08-16

Butler, Douglas C.

Brakes

Inertia of damping mass dissipates motion

188267, 188268, 267136, F16F 708

Patent

active

053378652

ABSTRACT:
A viscoelastic substance which is useful in an objective lens driving apparatus has magnetic particles dispersed therein for generating a force for restoring deformation of the viscoelastic substance when an external force acts upon the viscoelastic substance in the presence of an external magnetic field.

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patent: 4948230 (1990-08-01), Kasahara et al.
patent: 5206762 (1993-04-01), Kasahara et al.
Soviet Inventions Illustrated, Sections P, Q, week 8643, Dec. 3, 1986, Derwent Publications Ltd., London, Q 49 SU 1216-327 (Oil Gas Res Inst).

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