US4421488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aid for curing or mitigating stammering
Assignee: Individual
•
Filing: 1981-03-03
•
Granted: 1983-12-20
•
Expires: 2001-03-03
Abstract
Abstract An aid for curing or mitigating stammering comprises two earphones and at least one microphone which are connected with an amplifier, and a delay unit in which the signal from the amplifier to one earphone is delayed in relation to the signal which is transmitted to the other earphone.
Inventors
- 👤 Paul Parlenvi
- 👤 Ingemar H. G. Almslatt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:53
CPC Classifications
A; A61; A61F; A61F5/00; A61F5/58
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
107 words
A device for curing or mitigating stammering of a person, comprising: at least one microphone, an amplifier operatively connected to said microphone, two earphones operatively connected to said amplifier, and a delay unit in the connection between said amplifier and one of said earphones for delaying a signal from the amplifier to said one earphone in relation to the signal from the amplifier to the other earphone so that the signal transmitted without delay to one ear of the person via said other earphone is perceived faster to the dominating cerebral hemisphere of the person than to the other cerebral hemisphere to thereby at least mitigate stammering.
Claim 2
Independent Claim
107 words
A device for curing or mitigating stammering of a person, comprising: at least one microphone, an amplifier operatively connected to said microphone, two earphones operatively connected to said amplifier, and a delay unit in the connection between said amplifier and one of said earphones for delaying a signal from the amplifier to said one earphone in relation to the signal from the amplifier to the other earphone so that the signal transmitted without delay to one ear of the person via said other earphone is perceived faster to the dominating cerebral hemisphere of the person than to the other cerebral hemisphere to thereby at least mitigate stammering.
Claim 3
Dependent Claim
20 words
A device according to claim 1, wherein said earphones and said microphone are coupled together to form a portable unit.
Claim 4
Dependent Claim
28 words
A device according to claim 1 or 2, wherein said delay unit has an adjusting device, by means of which the time delay between the signals is adjustable.
Claim 5
Dependent Claim
23 words
A device according to claim 1 or 2, wherein said delay unit is assembled together with the amplifier to form a portable unit.
Claim 6
Dependent Claim
24 words
A device according to claim 1 or 2, wherein said two earphones have controls for individual adjustment of the volume of the respective earphone.
References Cited (Backward Citations)
US3101081A
Cited
US3349179A
Cited
US3504120A
Cited
US3566858A
Cited
US3773032A
Cited
FR2260153A1
Cited
US3894196A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-12-19 | 1987-06-20 | 1987-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-19 | 1991-06-20 | 1991-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-19 | 1995-06-20 | 1995-12-20 | $7700.00 | Window Closed / Lapsed |