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US 5,344,117 AGranted
Micro-actuator
AssigneeRobert Bosch GmbH
InventorsHans-Peter Trah, Gottfried Flik
Life of this patent
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Abstract
A micro-actuator includes force elements and compensation elements arranged on a bending element such that a change in the environmental temperature does not cause any flexing of the bending element.
Claims12
A micro-actuator, comprising:
- a) a bending element, said bending element having a first thermal coefficient of expansion;
- b) a force element, said force element
- i) having a variable length relative to said bending element,
- ii) being arranged on said bending element, and
- iii) having a second thermal coefficient of expansion different from the first thermal coefficient of expansion of said bending element;
- and
- c) a compensation element, said compensation element
- i) having a third thermal coefficient of expansion different from the first thermal coefficient of expansion of said bending element, and
- ii) being arranged on said bending element,
- wherein said compensation element compensates for a force effect of said force element on said bending element resulting from a change in environmental temperature.
7 more elements
Dependencies are inferred from the claim text.