Patents Assigned to EDO Electro-Ceramic Products
  • Patent number: 6373170
    Abstract: A piezoelectric motor has a head to movably engage a separate member, and one or more piezoelectric blocks coupled to the head, and displacing the head and separate member by selectively expand and contract in response to an applied electric field. An electrode extends between the head and the piezoelectric block. One or more apertures are formed in the electrode to create a space between the head and the at least one piezoelectric block to receive an adhesive to join the head and the piezoelectric block. A joint is formed between the piezoelectric block and head which has a first rigid zone to displace as the piezoelectric block expands, and a second compliant zone to comply. The electrode extends only through a portion of the joint, or the rigid zone, and the adhesive extends through at least another portion of the joint, or the compliant zone.
    Type: Grant
    Filed: March 10, 2000
    Date of Patent: April 16, 2002
    Assignee: EDO Electro-Ceramic Products
    Inventor: Chris Hills