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1. WO2002025748 - PIEZOELECTRIC CYLINDER COUPLER FOR VARIABLY COUPLING TWO BODIES AND JOINT INCORPORATING THE COUPLER

Publication Number WO/2002/025748
Publication Date 28.03.2002
International Application No. PCT/US2001/028826
International Filing Date 14.09.2001
IPC
H01L 41/09 2006.01
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
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
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
Applicants
  • VAN POPPEL, Jean, A. [US]/[US]
Inventors
  • VAN POPPEL, Jean, A.
Agents
  • HABIB, Jeffrey, S.
Priority Data
09/663,76218.09.2000US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PIEZOELECTRIC CYLINDER COUPLER FOR VARIABLY COUPLING TWO BODIES AND JOINT INCORPORATING THE COUPLER
(FR) EMBRAYAGE PIEZO-ELECTRIQUE CYLINDRIQUE POUR L'ACCOUPLEMENT VARIABLE DE DEUX CORPS, ET JOINT L'INCORPORANT
Abstract
(EN)
A controlled collapse joint (60) includes a piezoelectric coupler (10) that frictionally couples two bodies (62, 64). The coupler includes concentric outer member (14) and inner member (16) mounted for relative motion on cooperating bearing surfaces (30, 44). The two surfaces engage each other with an interference fit that resists relative motion and frictionally couples the members (14, 16). One of the surfaces (30) is formed on a piezoelectric component (16) that moves towards or away the other surface when a voltage difference is applied to the piezoelectric component. The coupling of the two members (14, 16) is selectively adjustable by varying the applied voltage difference to increase or decrease the interference fit between the piezoelectric component (16) and the other member (14).
(FR)
L'invention porte sur un joint à rétraction (60) comprenant un (10) piézo-électrique solidarisant deux corps (62, 64) par frottement. L'embrayage comporte un élément extérieur (14) et un élément intérieur (16) concentriques montés sur des surfaces porteuses (30, 44) coagissant pour permettre leur mouvement relatif. Les deux surfaces sont en contact serré qui s'oppose à leur mouvement relatif et solidarise les éléments (14, 16) par frottement. L'une des surface (30) est formée sur un composant piézo-électrique (16) qui se rapproche ou s'éloigne de l'autre surface (14) quand une différence de potentiel lui est appliquée. L'accouplement entre les deux éléments (14, 16) peut se régler sélectivement en faisant varier la différence de potentiel appliquée ce qui accroît ou décroît la force de serrage entre l'élément piézo-électrique (16) et l'autre élément (14).
Also published as
Latest bibliographic data on file with the International Bureau