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:
Mar. 17, 1987
Filed:
Feb. 15, 1985
Ellis M Zacharias, Tulsa, OK (US);
Nusonics, Inc., Tulsa, OK (US);
Abstract
A high pressure transducer for transmitting and/or receiving sonic energy, the transducer having a housing with a cylindrical opening, a metallic acoustic window element closing one end of the opening, a cylindrical transducer crystal having one planar surface in engagement with the acoustic window rearward face, a thrust producing compression screw threadably received in the cylindrical opening supplying pressure through dampening means to the crystal rearward face to force the crystal into intimate engagement with the acoustic window, the acoustic window having a thickness of about N times 1/2 of the wavelength of crystal produced sound in the acoustic window, N being the least whole number providing an acoustic window having strength to withstand the pressure to which the transducer is subjected without significant deformation.