US5432835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone device for amplifying opposite party's voice after user's telephone is placed on-hook
Assignee: Hashimoto Corp
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Filing: 1993-09-29
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Granted: 1995-07-11
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Expires: 2013-09-29
Abstract
Abstract This device is designed so that although voice of the opposite party will be amplified when telephone 1 on the side of the device is first placed on-hook during a telephone conversation, amplification will not occur if the opposite party places his or her phone on-hook first during a telephone conversation or if the user places telephone 1 on-hook before the opposite party picks up the telephone. The structure, which is shown in FIG. 1 such that during a telephone conversation between telephone 1 and telephone 12, when telephone 1 is placed on-hook first, the on-hook status is detected by means of the photocouplers PC-1 or PC-2, and the voice of the opposite party at telephone 12 is amplified by means of contacts y1-1 and y1-2, which are in the make position, line transformer 2, amplifier 3 and speaker 4. Further, when the opposite party's telephone 12 is placed on-hook first, the voice of the opposite party will not be amplified because a reversal of polarity and a brief disconnection on telephone line 13 are detected by means of photocouplers PC-1 and PC-2.
Inventors
- 👤 Kazuo Hashimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:56
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/60; H04M1/6033
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
139 words
A telephone device for amplifying an opposite party's voice after user's telephone is placed on-hook, said telephone device comprising: ringing signal detection means for detecting a ringing signal from an unspecified second telephone; off-hook detection means for detecting off-hook condition of a first telephone after said ringing signal is detected by said ringing signal detection means; first on-hook detection means for detecting on-hook condition of said first telephone after said first telephone is placed off-hook; second on-hook detection means for detecting on-hook condition of said second telephone; and voice amplification means for amplifying sound signals on telephone line, wherein depending on output of said first on-hook detection means and said second on-hook detection means, said voice amplification means operates when said first telephone is placed on-hook first but does not operate when said second telephone is placed on-hook first.
Claim 2
Dependent Claim
139 words
A telephone device for amplifying an opposite party's voice after user's telephone is placed on-hook, said telephone device comprising: ringing signal detection means for detecting a ringing signal from an unspecified second telephone; off-hook detection means for detecting off-hook condition of a first telephone after said ringing signal is detected by said ringing signal detection means; first on-hook detection means for detecting on-hook condition of said first telephone after said first telephone is placed off-hook; second on-hook detection means for detecting on-hook condition of said second telephone; and voice amplification means for amplifying sound signals on telephone line, wherein depending on output of said first on-hook detection means and said second on-hook detection means, said voice amplification means operates when said first telephone is placed on-hook first but does not operate when said second telephone is placed on-hook first.
Claim 3
Dependent Claim
116 words
A telephone device for amplifying an opposite party's voice after user's telephone is placed on-hook, said telephone device comprising: a first telephone for calling an unspecified second telephone; first off-hook detection means for detecting off-hook condition of said first telephone; first on-hook detection means for detecting on-hook condition of said first telephone; second on-hook detection means for detecting on-hook condition of said second telephone; and voice amplification means for amplifying sound signals on telephone line, wherein depending on output of said first on-hook detection means and said second on-hook detection means, said voice amplification means operates when said first telephone is placed on-hook first but does not operate when said second telephone is placed on-hook first.
Claim 4
Dependent Claim
116 words
A telephone device for amplifying an opposite party's voice after user's telephone is placed on-hook, said telephone device comprising: a first telephone for calling an unspecified second telephone; first off-hook detection means for detecting off-hook condition of said first telephone; first on-hook detection means for detecting on-hook condition of said first telephone; second on-hook detection means for detecting on-hook condition of said second telephone; and voice amplification means for amplifying sound signals on telephone line, wherein depending on output of said first on-hook detection means and said second on-hook detection means, said voice amplification means operates when said first telephone is placed on-hook first but does not operate when said second telephone is placed on-hook first.
Claim 5
Dependent Claim
57 words
A telephone device for amplifying an opposite party's voice after user's telephone is placed on-hook as set forth in claim 2, wherein said voice amplification means does not operate if said first telephone is placed on-hook while said second telephone is not placed off-hook yet in spite of said first telephone's attempt to call said second telephone.
References Cited (Backward Citations)
US4317964A
Cited
US4477698A
Cited
US4496797A
Cited
US4903291A
Cited
US4847896A
Cited
US4759054A
Cited
US5140631A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-07-10 | 1999-01-09 | 1999-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-07-10 | 2003-01-09 | 2003-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-07-10 | 2007-01-09 | 2007-07-11 | $7700.00 | Window Closed / Lapsed |