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| Number | Title | Issue Date |
| 4556122 | Ear acoustical hearing aid An acoustical small hearing aid designed to be worn in the concha of the auricle and made of thin-walled plastic, metal, or rubber. This invention modifies the normal conchal resonance and combines it with the ear canal resonance to shift the normal sound... | 12/03/1985 |
| 4542803 | Detachable inflight headset for civil aircraft The present invention relates to a detachable inflight headset for civil aircraft, and in particular to one comprising a pair of earpieces each including a casing provided at the side portion with a recess which comes with two slits provided within the re... | 09/24/1985 |
| 4529058 | Earphones A mounting device for mounting an earphone in sound receiving relationship to the ear of the user, the earphone comprising a generally cylindrical housing having a suitable terminal for connection to a source of signal and an inner generally planar surfac... | 07/16/1985 |
| 4529057 | Ear defenders An ear defender for a headset, the ear defender comprising a rigid shell having holes in a central portion to permit the passage of ambient sound and including a valve mechanism to close the holes as required. The shell consists essentially of a unitary c... | 07/16/1985 |
| 4523661 | Earphone system for use in large-cavity earcups A sound-attenuating earcup assembly for isolating the ear of a wearer from ambient sound while affording the wearer external communication capability without doffing the earcup assembly in which a sound-attenuating earcup of relatively rigid material form... | 06/18/1985 |
| 4498555 | Hearing aid nubbin and acoustic damper An improved nubbin and acoustic damper for the elimination or production of resonance in the sound transmission tubing of a hearing aid. The nubbin and nubbin sound conduit include a right angle corner. The damper comprises a plug having three body portio... | 02/12/1985 |
| 4465159 | Nonlinear ear protecting device An ear protecting device for protecting a wearer from annoying and/or damaging noise levels. The device is comprised of a connecting member and a pair of muffs suitable for covering a wearer's ears. The muffs are suspended from opposite portions of the co... | 08/14/1984 |
| 4459707 | Ear protecting device An ear protecting device for protecting a wearer from annoying and/or damaging noise levels. The device is comprised of a connecting member and a pair of muffs suitable for covering a wearer's ears. The muffs are suspended from opposite portions of the co... | 07/17/1984 |
| 4457396 | Sound deflector for headset ear phones A sound deflector for attachment to a user's headset earphones is disclosed comprising means situated intermediate the headset earphone and a user's ear canal, said means comprising a hollow cylinder adapted to be operably connected to the headset earphon... | 07/03/1984 |
| 4450930 | Microphone with stepped response A microphone, particularly for hearing aid application, said microphone providing a stepped response characteristic relative to frequency wherein low frequency sounds will couple to the associated hearing aid with a restricted amount of amplification, whi... | 05/29/1984 |
| 4441576 | Nonlinear passive acoustic filtering In an ear muff intended for protection against excessive noise exposure, the passive means according to this invention automatically and continuously varies the amount of reduction provided for the sound arriving at the ear of the wearer; it retains subst... | 04/10/1984 |
| 4437538 | Ear-cap This invention concerns an ear protecting means and specially an ear-cap which protects the ear against dangerous noise. The object of the invention is to silence the dangerous noise while permitting talking communication between two persons. The inventio... | 03/20/1984 |
| 4438163 | Pad with shape adapting properties A pad with shape adapting properties, including at least two adjacently located layers of a preferably absorbing material which are joined together in the region of the outer peripheral edge portions of the layers the layers further including a free tongu... | 03/20/1984 |
| 4424880 | Acoustic device for a head protector An acoustic device which includes a sound generating element for generating sounds, a case member having an inner chamber for containing the sound generating element therein, and a sound conducting member extending from the case member for conducting the ... | 01/10/1984 |
| 4420657 | Adjustable headset A lightweight adjustable headset is disclosed for use with telephones. The headset includes a housing having a microphone boom mounted in a manner to permit rotational and translational movement. A support member is provided for affixing the headset to th... | 12/13/1983 |
| 4417104 | Plug for miniature receiver Plug for miniature receiver, especially for pocket hearing aids for the hard-of-hearing, with a plug body (7) and at least one plug pin (9) projecting out of the plug body (7). In order to avoid a gap between the receiver and the plugged-in plug, and ther... | 11/22/1983 |
| 4403120 | Earphone A high performance and extremely compact earphone is disclosed. The earphone includes a speaker unit and a case in which the speaker unit is mounted. The earphone is attachable to a cavity of a conha defined by the tragus and a confronting projection of t... | 09/06/1983 |
| 4381830 | Continuous flow earmold tubing connector A connector connects sound conduction tubing from a hearing aid to a sound conduction bore in an earmold. The connector is an elbow-shaped member with one end receiving an end of the sound conduction tubing while the other end has latching means that latc... | 05/03/1983 |
| 4308426 | Simulated ear for receiving a microphone A dummy head for use in recording binaural sounds includes a pick-up for the sounds in the form of two microphones. The head comprises a pair of simulated ears, each having a single smooth three-dimensional, curved surface extending radially in all direct... | 12/29/1981 |
| 4296829 | Hook-shaped part of a behind-the-ear hearing aid A hook shaped part (2) for a behind the ear hearing aid. The hook shaped part is hollow and at one end (5) formed to be connected to an acoustic output from the upper front end of the hearing aid case (1) and serving to transmit sound from the hearing aid... | 10/27/1981 |
| 4173715 | Acoustical device An acoustical device for the reception of sound such as music by humans. The device includes a stereo headset having an acoustic passage and terminal earphones at each end of the headset. The headset is mountable on the head of a human so that the termina... | 11/06/1979 |
| 4170275 | Ear cushion A pneumatic ear cushion for a headphone or ear defender is formed from two sheets of vinyl plastic. One sheet is molded to form concentric inner and outer walls about a central opening and a connecting sealing wall which is shaped to form a cavity that re... | 10/09/1979 |
| 4071717 | Headphone earpiece A headphone earpiece for wearing on a person's ear, comprises an annular pad adapted to engage around the ear and a sound transducer having a transducer diaphragm supported within said pad so as to define a coupling space between the transducer diaphragm ... | 01/31/1978 |
| 4023642 | Soundproof earcovers A pair of shells filled with foam and ear plugs to cover the ears and exclude all sound.... | 05/17/1977 |
| 3944018 | Acoustical seal An acoustical ear muff arrangement having an identical acoustical sealing muff for each ear, the muffs being connected together by an adjustable spring wire structure for holding a muff over each ear. Each muff has a dish-shaped portion with elastomeric f... | 03/16/1976 |
| 3938614 | Cushion member for sound-proof sealing A cushion member for sound-insulating and air-tight sealing, which cushion is to be attached substantially along the edge of a first surface, which at this edge is connected via the cushion with another surface, which need not have a form absolutely confo... | 02/17/1976 |
