The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 12, 2010
Filed:
Mar. 01, 2006
Erich Klein, Himberg, AT;
Ewald Frasl, Biedermannsdorf, AT;
Susanne Windischberger, Vienna, AT;
NXP B.V., Eindhoven, NL;
Abstract
A membrane () for an electroacoustic transducer () is disclosed, wherein a thickness (d) of said membrane () and an average Young's modulus (Eavg) of said membrane () are chosen in such a way that the critical load (Fbc), which causes the membrane () to buckle and/or crinkle, is increased compared to a reference membrane. The reference membrane made of Polycarbonate has the same shape, dimension, and stiffness in its direction of movement (MOV) as said membrane (). According to the result of investigations on buckling and/or crinkling, said effect occurs with different critical buckling/crinkling loads for membranes of the same shape and dimension, but made of different materials, even when the stiffness of the membranes in their direction of movement—and hence their resonant frequency—is identical.