# US 2019/0317201 A1 · Sonar device with holder > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0317201 A1 - Document ID: US20190317201A1 - Status: Published application - Kind: A1 - Application number: 16/464,798 - Filed: 2016-11-30 - Published: 2019-10-17 - Earliest claimed: 2016-11-30 - Assignees: Saab AB - Applicants: Saab AB - Inventors: Oskar VIKLUND - Web page: https://patentgrep.com/patent/US20190317201A1 ## CPC - G01S 7/521: Constructional features - B06B 1/0644: {using a single piezoelectric element (B06B1/0688 takes precedence)} - G01S 15/04: Systems determining presence of a target - G10K 11/006: {Transducer mounting in underwater equipment, e.g. sonobuoys} - G10K 11/32: characterised by the shape of the source - H04R 31/00: Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor {(manufacture of microstructural arrangements of deformable or non-deformable structures in general B81C1/00182)} - G10K 2200/11: Underwater, e.g. transducers for generating acoustic waves underwater - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - B06B: METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, {e.g.} FOR PERFORMING MECHANICAL WORK IN GENERAL (for particular applications, see the relevant subclasses, e.g. B07B1/40, B23Q17/12, B24B31/06; measurement of mechanical vibrations G01H; in direction finding, locating, distance or velocity measuring G01S; {generating seismic energy G01V1/02}; control of mechanical vibrations in general G05D; sound-producing devices, e.g. bells, sirens, whistles G10K, {e.g. methods or devices for transmitting, conducting, or directing sound in general G10K11/00}; generation of electrical oscillations H03B; electromechanical resonators in general H03H; electromechanical transducers {for communication techniques, e.g. microphones, speakers} H04R) - G10K: SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR - H04R: LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS (producing sounds with frequency not determined by supply frequency G10K) ## Abstract The present disclosure relates to a Sonar device (1) for detection of underwater objects. The sonar device (1) comprises a body element (2) comprising a piezo electric element (3). The sonar device further comprises a holder (4) adapted to hold the piezo electric element (3). The holder (4) is arranged to centre the piezo electric element (3) within said body element (2). The holder (4) is arranged such that the piezo electric element (3) is held firmly in place and also provide for that detection can be made omni-directionally. A method for manufacturing a holder (4) and a sonar device (1) is also disclosed. ## Claims ### Claim 1 Sonar device (1) for detection of underwater objects, comprising a body element (2), comprising a piezo electric element (3), characterized in that further comprised is a holder (4) for the piezo electric element (3), wherein the holder (4) is arranged such that it can centre and hold the piezo electric element (3) within said body element (2), wherein said holder (4) is arranged such that the piezo electric element (3) is held firmly in place with no intended damping effects. ### Claim 2 (depends on 1) Sonar device (1) according to claim 1, wherein the piezo electric element (3) has a half spherical shape or a full spherical shape. ### Claim 3 (depends on 1) Sonar device (1) according to claim 1, wherein further comprised is a resin (6) filling of the body element (2) in order to make the sonar device (1) water proof and further hold the piezo electric element (3) in position. ### Claim 4 (depends on 1) Sonar device (1) according to claim 1, wherein the holder (4) engages the piezo electric element (3) by means of a half spherical bowl shape. ### Claim 5 (depends on 1) Sonar device (1) according to claim 1, wherein the holder (4) engages the piezo electric element (3) at four to twelve separate engaging areas (400, 410, 420, 430), preferably at four separate areas. ### Claim 6 (depends on 5) Sonar device (1) according to claim 5, wherein the separate engaging areas (400, 410, 420, 430) are distributed in a symmetric pattern to the piezo electric element (3). ### Claim 7 (depends on 1) Sonar device (1) according to claim 1, wherein further the holder (4) has a cavity where the electronics (7) needed for the sonar device (1) is directly comprised within the structure of the holder (4). ### Claim 8 (depends on 1) Sonar device (1) according to claim 1, wherein at least the holder (4) is a layer on layer element as provided by manufacturing by a reciprocating three dimensional printing device (8). ### Claim 9 (depends on 1) Method of manufacturing a sonar device according to claim 1, comprising the steps of: s1. providing a reciprocating three dimensional printing device, s2. providing an input data to said reciprocating three dimensional printing device that gives instruction to print a holder for a piezo electric element, s3. positioning a piezo electric element in said holder, s4. providing a body element into which said holder comprising the piezo electric element is inserted. ### Claim 10 (depends on 9) Method according to claim 9, wherein further comprised is the step of: providing a resin and filling the body element with said resin and covering at the same time said holder and piezo electric element.