Drive unit

Details Drive unit Drive unit

2006-12-21

2008-09-30

San Martin, Jaydi A (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S012060, C310S015000, C310S323020

Reexamination Certificate

active

07429812

ABSTRACT:
A drive unit for the movement of an active element with respect to a passive element, wherein the active element includes a resonator and at least one excitation device for exciting oscillations of the resonator. The resonator includes contact regions for exerting forces onto the passive element. The active element may be driven with respect to the passive element by way of oscillating movements. The resonator includes at least two arms, preferably a pair of arms. The at least two arms of an arm pair, proceeding from a connection region of the resonator, are formed on the same side of the resonator. In each case the contact regions are formed at the outer ends of the arms, wherein the contact regions may be moved to and away from one another by way of oscillating movements of the arm pair. Thereby, a relative movement of the passive element with respect to the active element may be effected.

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English translation of German language International Search Report (German language version submitted to U.S. Patent Office on Dec. 21, 2006) corresponding to PCT/CH2005/000343.
PCT International Preliminary Search Report dated Jun. 24, 2004 (Form PCT/ISA/210).

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