PUSH-PULL HIGH FORCE PIEZOELECTRIC LINEAR MOTOR

A high force linear displacement piezolectric motor operates with equal forc e and reliability in both the push and pull mode. The new motor includes a split motor shaft (12) having with two shaft segments (15a, 15b) that are coaxially affixed to opposite sides of an expandable and contractable disp...

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Bibliographic Details
Main Authors NEURGAONKAR, RATNAKAR R, OLIVER, JOHN R
Format Patent
LanguageEnglish
French
Published 11.07.2006
Subjects
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
GENERATION
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Summary:A high force linear displacement piezolectric motor operates with equal forc e and reliability in both the push and pull mode. The new motor includes a split motor shaft (12) having with two shaft segments (15a, 15b) that are coaxially affixed to opposite sides of an expandable and contractable displacement actuator (16). The displacement actuator has a piezoelectric body (17) coincident with the axis of the shaft segments such that the expansion of the piezoelectric body increases the length of the split motor shaft. The motor has a set of clamps (13a, 13b) that receive and close on the shaft segments to hold them in place, or open to allow axial displacement of the shaft segments. Linear motion of the split shaft motor is produced by coordinating the opening and closing the clamps with the expansion and contraction of the piezoelectric body.
Bibliography:Application Number: CA20002381505