FIELD: items of personal use and for household.
SUBSTANCE: invention refers to the sphere of protection of human organs of hearing from the influence of superstrong impulse noises. The ear protector consists of a bowl and is equipped with an elastic sealing bead. The main throttling device is fixed in the bowl body and made in the form of a plate with through holes. The ratio between the plate thickness to the hole diameter is within the limits of 2.5 to 3.5, and the total square of the holes is about 1.0 to 1.4 from the square of the cross-section of the auditory passage. The internal volume of the ear protector has a partition with the additional throttling device with through holes. Holes axes of the throttling device do not coincide. The additional throttling device is equipped with a leaf-type damper.
EFFECT: high efficiency of protection from superstrong impulse noises with a simultaneous possibility of good perception of verbal instructions.
3 cl, 1 tbl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| AUDIOMETER FOR INVESTIGATING SOUND ABSORPTION PROPERTIES OF LIQUIDS | 2014 |
|
RU2559173C1 |
| MULTIFUNCTIONAL INTERACTIVE SOFTWARE AND HARDWARE SYSTEM FOR OBJECTIVE ASSESSMENT OF PATIENT'S SUBJECTIVE SATISFACTION LEVEL WITH ELECTROACOUSTIC HEARING CORRECTION RESULTS AND METHOD OF ITS APPLICATION | 2019 |
|
RU2720401C1 |
| METHOD FOR TREATMENT OF SENSORY HEARING DISTURBANCES, ACCOMPANIED BY SPEECH PERCEPTION DETERIORATION | 2016 |
|
RU2618164C1 |
| METHOD AND HARDWARE AND SOFTWARE COMPLEX FOR PRE-MEDICAL PRELIMINARY CLASSIFYING MULTIFACTORIAL ASSESSMENT OF POSSIBILITY OF HUMAN AUDITORY ANALYZER DURING MASS PREVENTIVE EXAMINATIONS OF THE POPULATION | 2021 |
|
RU2765108C1 |
| DEVICE FOR MEASURING NOISE IMMUNITY IN PERCEIVING HUMAN SPEECH | 1998 |
|
RU2148391C1 |
| METHOD FOR TREATING PATIENTS WITH CHRONIC SENSORINEURAL HEARING LOSS BY AUDITORY TRAINING IN VIRTUAL REALITY | 2021 |
|
RU2758165C1 |
| METHOD FOR EVALUATING THE EFFECTIVENESS OF HEARING PROSTHETICS AND SELECTING HEARING AIDS | 2021 |
|
RU2769058C1 |
| METHOD OF ESTIMATING ACOUSTIC EFFICIENCY OF PERSONAL NOISE PROTECTION MEANS | 2013 |
|
RU2518985C1 |
| METHOD FOR COMPENSATING FOR HEARING LOSS IN TELEPHONE SYSTEM AND IN MOBILE TELEPHONE APPARATUS | 2013 |
|
RU2568281C2 |
| METHOD FOR PRE-MEDICAL ASSESSMENT OF THE QUALITY OF SPEECH RECOGNITION AND SCREENING AUDIOMETRY, AND A SOFTWARE AND HARDWARE COMPLEX THAT IMPLEMENTS IT | 2020 |
|
RU2743049C1 |
