US4706778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
In-the-ear-canal hearing aid
Assignee: Topholm and Westermann ApS
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Filing: 1986-10-20
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Granted: 1987-11-17
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Expires: 2006-10-20
Abstract
Abstract The invention relates to an in-the-ear hearing aid for people with impaired or defective hearing, with an ear-piece containing a microphone, amplifier, telephone, battery compartment with battery, on/off switch and volume control and closed by a cover plate; a hollow space (6) to the auricular canal is provided for at the inner end of the ear-piece (1) between the sound outlet connector (4) of the telephone (3) and the sound outlet (5) of the hearing air, this hollow space forming a resonator in conjunction with the sound outlet.
Inventors
- 👤 Jan Topholm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:45
CPC Classifications
H; H04; H04R; H04R25/00; H04R25/48
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
131 words
In-the-ear-canal hearing aid for people with impaired or defective hearing comprising: an ear-piece (1) containing a microphone, amplifier, telephone, battery compartment with battery, on/off switch and volume control and closed by a cover plate, the improvement wherein a hollow space (6) is formed at the inner end of the ear-piece between the sound outlet connector (4) of the telephone (3) and the sound outlet (5) of the hearing aid to the auricular canal, forming a resonator in conjunction with the sound outlet, and wherein a replaceable cerumen collector (7) with at least one bore (8) is fitted at the sound outlet (5) of the hearing aid, forming an integrated part of the resonator, which can be tuned by changing the dimensions of the at least one bore in the cerumen collector.
Claim 2
Dependent Claim
131 words
In-the-ear-canal hearing aid for people with impaired or defective hearing comprising: an ear-piece (1) containing a microphone, amplifier, telephone, battery compartment with battery, on/off switch and volume control and closed by a cover plate, the improvement wherein a hollow space (6) is formed at the inner end of the ear-piece between the sound outlet connector (4) of the telephone (3) and the sound outlet (5) of the hearing aid to the auricular canal, forming a resonator in conjunction with the sound outlet, and wherein a replaceable cerumen collector (7) with at least one bore (8) is fitted at the sound outlet (5) of the hearing aid, forming an integrated part of the resonator, which can be tuned by changing the dimensions of the at least one bore in the cerumen collector.
Claim 3
Dependent Claim
50 words
Hearing aid in accordance with claim 1, characterized by the fact that the resonance chamber (6) is closed off by a collar (9) which touches the inner wall of the ear-piece on all sides, supports the telephone and is penetrated by the sound outlet connector (4) of the telephone (3).
Claim 4
Dependent Claim
39 words
Hearing aid in accordance with claim 1, wherein a bellied sound outlet duct constitutes said hollow space acting as a resonator (6) between the sound outlet connector of the telephone (3) and the sound outlet of the hearing aid.
Claim 5
Dependent Claim
25 words
Hearing aid in accordance with claims 1 and 2, wherein the cerumen collector (7) has several bores (8) leading from the outside to the inside.
Claim 6
Dependent Claim
27 words
Hearing aid in accordance with claim 4, wherein several bores (8) join together to form a common duct, constituting the sound (5) outlet of the hearing aid.
References Cited (Backward Citations)
US4010820A
Cited
US4311206A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-11-16 | 1991-05-18 | 1991-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-16 | 1995-05-18 | 1995-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-16 | 1999-05-18 | 1999-11-17 | $7700.00 | Window Closed / Lapsed |