Manufacturing an active suspension electromechanical transducer
Patent 4518555 Issued on May 21, 1985. Estimated Expiration Date: 
June 14, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 14, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2688156 3341895 3342915 3484518 3757718 Method and apparatus for forming multiple thickness bead Polymeric piezoelectric transducer with thermoformed protuberances Patent #: 4284921 InventorsAssigneeApplicationNo. 06/504159 filed on 06/14/1983US Classes:264/292, By drawing over a form264/291, Stretching or stretch forming264/296, One step reshapes portion only of article264/435, Molecular aligning or molecular orientating (e.g., poling, etc.)264/483Plasma (e.g., corona, glow discharge, etc.)ExaminersPrimary: Lowe, JamesAttorney, Agent or FirmInternational ClassH04R 17/00 (20060101)Foreign Application Priority Data1980-03-04 FRAbstractA process for manufacturing an electrochemical transducer, having at least one active element in the form of at least one film of a polymer material, comprises the following steps. First, clamping a polymer film between an inner set of jaws for delimitating a central area. Second, further clamping said polymer film between an outer set of jaws for delimitating a peripheral area surrounding the central area. And finally, shaping at least one of the areas by stretching. | |
