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2. Chester Greenwood - Wikipedia

   en.wikipedia.org/wiki/Chester_Greenwood

   Chester Greenwood (4 December 1858 – 5 July 1937) was an American engineer and inventor, known for inventing the earmuffs in 1873. [ 1] He reportedly came up with the idea while ice skating and he asked his grandmother to sew tufts of fur between loops of wire. [ 2] His patent was for improved ear protectors.

3. Earplug - Wikipedia

   en.wikipedia.org/wiki/Earplug

   See also: Plug (jewellery) Pre-molded earplugs (left), formable earplugs (center), and roll-down foam earplugs (right) An earplug is a device that is inserted in the ear canal to protect the user's ears from loud noises, intrusion of water, foreign bodies, dust or excessive wind. Since they reduce the sound volume, earplugs may prevent hearing ...

4. Earmuffs - Wikipedia

   en.wikipedia.org/wiki/Earmuffs

   Earmuffs that are also hearing protection. Earmuffs refer to two different items. Both items consist of a thermoplastic or metal head-band that fits over the top or back of the head, and a cushion or cup at each end to usually cover both ears. The cups can either be clothing accessories designed to cover a person's ears for warmth or personal ...

5. Hearing protection device - Wikipedia

   en.wikipedia.org/wiki/Hearing_protection_device

   A hearing protection device, also known as a HPD, is an ear protection device worn in or over the ears while exposed to hazardous noise and provide hearing protection to help prevent noise-induced hearing loss. HPDs reduce the level of the noise entering the ear. HPDs can also protect against other effects of noise exposure such as tinnitus and ...

6. Earmold - Wikipedia

   en.wikipedia.org/wiki/Earmold

   An earmold (also spelled; ear mold, ear mould or earmould) is a device worn inserted into the ear for sound conduction or hearing protection. Earmolds are anatomically shaped and can be produced in different sizes for general use or specially cast from particular ear forms. [1] Some users specify how hard or soft they want their mold to be, an ...

7. Hearing loss - Wikipedia

   en.wikipedia.org/wiki/Hearing_loss

   1.33 billion / 18.5% (2015) [ 4] Hearing loss is a partial or total inability to hear. [ 5] Hearing loss may be present at birth or acquired at any time afterwards. [ 6][ 7] Hearing loss may occur in one or both ears. [ 2] In children, hearing problems can affect the ability to acquire spoken language, and in adults it can create difficulties ...

8. Wrestling headgear - Wikipedia

   en.wikipedia.org/wiki/Wrestling_headgear

   Description. The main purpose of headgear is to protect the ears of the wrestler, not really the head as the name implies. Thus, wrestling headgear equipment are also simply called ear guards or ear protectors. The headgear often covers the ears of the wearer, has two straps that go behind the head, two that go over the front and top part of ...

9. History of hearing aids - Wikipedia

   en.wikipedia.org/wiki/History_of_hearing_aids

   History of hearing aids. Madame de Meuron with ear trumpet. The first hearing aid was created in the 17th century. The movement toward modern hearing aids began with the creation of the telephone, and the first electric hearing aid was created in 1898. By the late 20th century, the digital hearing aid was distributed to the public commercially.