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:
Oct. 21, 1986
Filed:
Oct. 02, 1985
Applicant:
Inventor:
Rainer Riedlinger, Karlsruhe, DE;
Assignee:
Richard Wolf GmbH, Knittlingen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
310311 ; 310324 ; 310328 ; 310326 ; 310800 ;
Abstract
A sonic transmitter has placed in front of it or in its acoustic beam path, an acoustic diode comprising at least two peripherally secured foils in mutual contact, the foils having opposed surfaces with a degree of adhesion and/or cohesion such that they may be pulled apart beyond a threshold value which may be acted upon--of negative sound pressure thus suppressing negative sound pulses, whereas positive sound pressures may be transmitted at almost unaltered levels in view of the existing mechanical contact of the foils.