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1. US6384518 - Piezoelectric coupler for variably coupling two bodies and joint incorporating the coupler

Office
United States of America
Application Number 09663762
Application Date 18.09.2000
Publication Number 6384518
Publication Date 07.05.2002
Grant Number 6384518
Grant Date 07.05.2002
Publication Kind B1
IPC
H01L 41/053
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
41Piezo-electric devices in general; Electrostrictive devices in general; Magnetostrictive devices in general; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
02Details
04of piezo-electric or electrostrictive elements
053Mounts, supports, enclosures or casings
H01L 41/04
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
41Piezo-electric devices in general; Electrostrictive devices in general; Magnetostrictive devices in general; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
02Details
04of piezo-electric or electrostrictive elements
F16D 27/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
27Magnetically-actuated clutches; Control or electric circuits therefor
H01L 41/08
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
41Piezo-electric devices in general; Electrostrictive devices in general; Magnetostrictive devices in general; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
08Piezo-electric or electrostrictive elements
H01L 41/083
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
41Piezo-electric devices in general; Electrostrictive devices in general; Magnetostrictive devices in general; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
08Piezo-electric or electrostrictive elements
083having a stacked or multilayer structure
H01L 41/09
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
41Piezo-electric devices in general; Electrostrictive devices in general; Magnetostrictive devices in general; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
08Piezo-electric or electrostrictive elements
09with electrical input and mechanical output
CPC
H01L 41/0986
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
41Piezo-electric devices in general; Electrostrictive devices in general; Magnetostrictive devices in general; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
08Piezo-electric or electrostrictive devices
09with electrical input and mechanical output ; , e.g. actuators, vibrators
0986using longitudinal or thickness displacement only, e.g. d33 or d31 type devices
F16D 28/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
28Electrically-actuated clutches
Applicants VAN POPPEL JEAN A.
Inventors van Poppel, Jean A.
Agents Thomas Hooker, P.C.
Priority Data 09663762 18.09.2000 US
Title
(EN) Piezoelectric coupler for variably coupling two bodies and joint incorporating the coupler
Abstract
(EN)

A controlled collapse joint includes a piezoelectric coupler that frictionally couples two bodies. The coupler includes concentric inner and outer members mounted for relative motion on cooperating bearing surfaces. The two surfaces engage each other with an interference fit that resists relative motion and frictionally couples the members. One of the surfaces is formed on a piezoelectric component that moves towards or away the other surface when a voltage difference is applied to the piezoelectric component. The coupling of the two members is adjustable by varying the applied voltage difference to increase or decrease the interference fit between the piezoelectric component and the other member.