| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ef4e0331973591302c3718b86a82f5f0 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G10K13-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04R2201-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04R2430-01 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G10K11-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04R1-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F41H13-0081
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G10K13-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04R3-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04R1-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04R1-345
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G10K15-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A01M29-16 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G10K15-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G10K13-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A01M29-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G10K11-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04R1-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F41H13-00 |
| filingDate |
2013-05-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dff712d4ae42c7d167bc5b2588b1ebe5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1aa10e7b4cadeab52c0104a2b41f8c3a |
| publicationDate |
2014-08-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
GB-2511145-A |
| titleOfInvention |
Acoustic apparatus and operation |
| abstract |
A portable acoustic warning device uses psycho-acoustic principles to create a highly directional acoustic waveform towards a target, creating a narrow beam of sound that is perceived by the target to be louder than it actually is. The beam minimises exposure to users and bystanders. The device comprises a cone-shaped horn 2302 connected to a sound pressure generating source. A phase plug 2306, which may be bi-conical in shape and have an acoustically absorbent ring 2304 mounted on it, is located within the horn. A second acoustically absorbent ring 2306 is preferably provided at the wide end of the horn. A signal generating system 2301 produces a first waveform which modulates around the first resonant frequency of the human ear canal, preferably between 3.5kHz and 4.0kHz at a rate of 0.15 to 0.25 seconds. The device may be used by Police in conflict management situations. A laser range finder may limit the sound level at the target to a pre determined level. An integrated camera may be used to aid aiming. Video footage may be recorded with use; along with the sound level at the target, exposure duration, time, date and GPS coordinates. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2020212674-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9872100-B2 |
| priorityDate |
2013-05-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |