| US 7,531,944 B2 | ||
| Piezoelectric actuator and enclosure therefor | ||
| Charles D. Oakley, Davison, Mich. (US); and Jack C. Webb, Davison, Mich. (US) | ||
| Assigned to Delphi Technologies, Inc., Troy, Mich. (US) | ||
| Filed on Feb. 09, 2007, as Appl. No. 11/704,666. | ||
| Prior Publication US 2008/0191586 A1, Aug. 14, 2008 | ||
| Int. Cl. H01L 41/053 (2006.01) | ||
| U.S. Cl. 310—340 [310/328; 310/346] | 31 Claims |
| 1. An enclosure for enclosing piezoelectric elements of a piezoelecoic actuator, the enclosure comprising:
a side wall that is shaped to define at least one strain compensation formation including:
at least one longitudinally-extensible part that is extensible along a longitudinal axis defined by the enclosure, at which
the side wall can be extended or contracted along the longitudinal axis; and
at least one inwardly-deflectable part, at which the side wall can be deflected transversely to the longitudinal axis,
wherein the at least one longitudinally-extensible part and the at least one inwardly-deflectable part are linked by a transition
section and operate independently from one another.
|