US 11,758,330 B2
Acoustic installation for emission of a transverse acoustic wave in gas environment
Danilo Herger, Burglen (CH)
Assigned to Sotis AG
Appl. No. 17/421,638
Filed by Sotis AG, Altdorf (CH)
PCT Filed Nov. 23, 2020, PCT No. PCT/IB2020/061009
§ 371(c)(1), (2) Date Jul. 8, 2021,
PCT Pub. No. WO2022/034370, PCT Pub. Date Feb. 17, 2022.
Claims priority of application No. RU2020126680 (RU), filed on Aug. 10, 2020.
Prior Publication US 2022/0345823 A1, Oct. 27, 2022
Int. Cl. H04R 7/04 (2006.01)
CPC H04R 7/04 (2013.01) 1 Claim
OG exemplary drawing
 
1. A device for emission of a transverse acoustic wave in a gas environment comprising:
a case in the form of a support frame,
a flat rectangular membrane fixed to the support frame, said rectangular membrane having four corners and four sides,
a drive for acoustic vibrations of the transverse acoustic wave comprising at least one acoustic vibration exciter having a magnetic circuit including ferrite parts,
wherein the membrane comprises first and second surface layers glued to respective first and second sides of a honeycomb layer, and a stabilizing impregnating composition based on polyurethane primers and varnishes covering the surface layers,
wherein the at least one acoustic vibration exciter has a moveable end attached to the flat membrane within a special line passing along a plane of the rectangular membrane, emerging from a first one of the corners of the rectangular membrane, and ending at a point on the membrane side opposite to the first one of the corners located at a distance of ⅔ between the corner opposite to the first one of the corners, and another one of the corners.