Actuators of active piezoelectric or electrostrictive material

engine

Patents

Applicunt: SFIM Industries, invention

plurality

of

stages

electrostrictive a tubular

of

comprises

piezoelectric

active blocks

structure.

distributed

The polarization

blocks alternates separation

which

separate

of shape when

to their

original

or

temperature

of a second

to form

memory temperature.

unit

active

the shape

memory

the crank

shaft.

critical

lowers

the

of heating

elements

Ergonomic systems and methods of providing intelligent adaptive surfaces and temperature control

of the

the

Applicant: ProMXD

of the shape

below

This action

Znventdr: N. Zhang

means

the

means

critical

This patent

and cooling

causes

rotation

provide

of

medical

function.

Technology

presents

therapy,

Surfaces

contour,

Publication date: 8 May 2001

footwear,

Inventors: I.V. Kutlucinar,

devices.

The

employ

an evaporator

of the structure,

sliding

over

one

as they are suitable

another,

and

for

stiffness than the unit active blocks. A separation element

extends

active blocks, side

over the height

the separation

of a given

respectively

unit

through

to the various

block

of alternating stacks

bonded-together

is

stage.

The

alternate

between

prestress

structure

each slabs

of any

which

which

structure

two

one

extends

a

stage with

inside

a

one

with

the

of the other stage.

Patent number: US 6222306

transformer,

the

voltage

Applicant: Micrus Corporation, The

intravascular

elongated,

delivery

flexible

therapeutic

to

collar

detachably

device

for placement

within

the vasculature.

pusher

therapeutic

the

The

a the

memory

therapeutic

of the therapeutic collar

device

is disposed

device or the flexible heat

member device

within

and a shape

mounting

either the therapeutic pipe

member,

be placed

of a patient,

an

and

and

connects

the heat

pipe

member.

In a preferred

embodiment,

memory

collar is made of nickel titanium

the pusher

the shape alloy.

frequency

degrade

voltage

with

line

can

losses

and

transformation

over wide

for simultaneous

ranges,

applications

A MEMS-based improved

optical characteristics

manufacturing. embodiment,

In an

single

comb

beam

structure

switch

disc drive system

head

suspension

over

the

or hinges

and methods with

switch

includes

with

a deflecting

actuator

an

actuator

deflecting mirror retracted

the beam

to one of the extended position

and

the

interposed

channels. of

and moving

the

or the

structure

suspension

to

element

is

are sufficiently

compliant

to permit

of the head suspension

to

the

base

piezoelectric

upon

with respect

deformation

of

the

elements.

Patent number: US 6233124 D.G.

Qualey,

D.A.

J.M. Murphy

Temperature compensated microelectromechanical structures

a retracted

positions

head beams

Publication date: 15 May 200 1

capable

beam

and

movement

Inventors: R.A. Budde,

structure

beam

the

The beams

Sluzewski,

force

element

and

applied.

moved

a

slider

to a voltage

of being

applies

the

in response

is capable

and

base

the head

to the

position

a

microactuation

piezoelectric

coupled

extended

from

a

The

with

arm and a

piezoelectric

load

a mirror

and

The mirror

for one

A

the

the

The

tracks.

supporting

a

drive

a load beam

disc.

connecting

base.

deformable

Inc, USA

accordance

optical

drive

the

for

between of

a disc

of a rotatable

to an actuator

rotatable includes

in

of concentric

includes

for

of a transducing

to a track

base for attachment

wide

LLC, USA

a slider

disk with a plurality

is presented

the waveguide

Smart Materials Bulletin

respect

is

Microelectromechanical optical switch and method of manufacture

apart

@

by

with

suspension

position

converter

and power

is presented

a position

carried

Inventor: RI? Bishop

Applicant: ADC Telecommunications

altering

system

attached

channels

a heat

control

system

a

system

waveguide

to

head

and

requiring

microactuation

selectively

service.

between

relates

that

audio and data signal

between

invention

echoes

A

ratio (V.sub.out

frequency

Inventor: D.A. Ferrera

This

lines,

also provides

Publication date: 1 May 2001

Applicant: Hycomp Inc, USA

Advanced

to

to reduce

are disclosed.

Applicant: Seagate Technology

provide

Patent number: US 6229247

The

methods

Piezoelectric microactuator suspension assembly with improved stroke length

data transmission.

transformer

actuator.

engine using SMA

systems

proximity

Hoffberg

in a broad

Patent number: US 6224610

Heat converter actuator

in close

Inventors: R.F. Bailey Sr, R.A. Fisher, S.M.

a

Publication date: 8 May 200 1

with

and cryotherapy

employ

to

cryotherapy

As

signal

transmission

high-speed

piezoelectric

bandwidth

includes

heat pipe pusher

device

vasculature

system

options

and

Publication date: 15 May 2001

step-down

output

transformer

telecommunications

USA

cooling

and

are applied

sides

telecommunications

matching

minimises

seriously

the

signal

the

impedance

adaptable

Shape memory polymer intravascular delivery system

while

energy

other.

provides

For

applications,

which

each

device

the input

/V.sub.in)

J.C. Charrier

surfaces

and therefore

supply

and output

from

conversion

preserves

electrical

has its input

isolated

uniform

Publication date: 24 April 2001 Inventors: B.Groult,

device

electrically

The

technologies

seating

risk of frostbite. Corporation,

piezoelectric

bandwidth.

to slabs of the

are integral

skin,

damping

Patent number: US 6230501

A multi-layered transfer

a

to

slabs that are integral

stage

prestress

by

belonging

stage, and slabs that are bonded preceding

Here,

constituted

slabs

different

means

blocks.

electrical

USA

sign to be applied

of active

Multi-layer piezoelectric energy transfer device Applicant: Face International

extending

Electrode-forming

element

separation

on either

both stages on either side of

the unit active block. enables voltages

of two stages of

elements

active

A.M. Saul

are of greater

with adjustable

force

are superposed

The

which

and enhanced

are provided

temperature.

direction

systems

comfort

transient

Patent number: US 6226992

in the height

Inc, USA

ergonomic

blocks of any one stage in pairs. These elements on one another

in the absence

of force.

Publication date: 8 May 2001

above

heating

portion

elements

are

of the extended

position

Patent number: US 6229640

above

a cooling

to the other

or the retracted

that

temperature

of a first portion

elements

the mirror

position

elements

The

and

a

of the application

shape when

temperature.

memory

and includes

a critical

temperature

of the active

the

shape

shaft

assembly

memory

below

a

from one stage to the next, and

elements

a plurality

returns

an actuator

crank

The actuator

raises the temperature or

shaft,

to the

malleable

the critical

a piezoelectric

actuator

means.

and return

France

presents

electrostrictive

or

a crank

coupled

heating

Actuators of active piezoelectric electrostrictive material This

comprising

assembly

Applicant: JDS Uniphase Inc, USA MEMS compensate and process

structures for ambient variations,

are

presented

temperature

that changes

and can be employed

in

August2001