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. 02, 2021
Filed:
Sep. 07, 2018
Simtrans Tech Inc, Apia, WS;
Wen-Jong Wu, New Taipei, TW;
Nai-Chang Wu, New Taipei, TW;
Yuan-Ping Liu, New Taipei, TW;
Wei-Ren Lai, New Taipei, TW;
Chao-Ting Wu, New Taipei, TW;
SIMTRANS TECH INC, Apia, WS;
Abstract
A composite case of an airborne ultrasonic transducer for transmitting, receiving, or both of ultrasound in atmospheric environment at an ultrasound pressure level is disclosed. The case comprises a first case component and at least a second case component. The second case component is made of a material different from the first case component having an acoustic impedance smaller than that of said first case component and is structurally connected to the first case component for reducing said mechanical quality factor while maintaining said ultrasound pressure level. The connection between the first and second case components is by strong bonding at an interface between the components so that the strong bonding forms a composite structure for the case.