Patent US4001893A successfully refreshed from Google Patents.
US4001893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable tape-recorder
Assignee: Panasonic Holdings Corp
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Filing: 1974-10-04
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Granted: 1977-01-04
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Expires: 1994-10-04
Abstract
Abstract A sound-reflector, for instance a tilted plate, is set over a microphone on the top face of a chest-pocket size small tape-recorder, so that voice of a person who is talking to the person who carries the tape-recorder is reflected to effectively reach the microphone provided on the top face. By means of the sound-reflector, both the voice of the tape-recorder carrying person and the voice of his companion are recorded with more even levels in comparison with recordings by conventional chest-pocket type tape-recorders without such a sound-reflector.
Inventors
- 👤 Kozo Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:11
CPC Classifications
G; G11; G11B; G11B25/00; G11B25/06; G11B25/063
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
120 words
A chest-pocket type tape-recorder having a microphone on a narrow top face thereof, characterized in that a movable sound reflector for reflecting sounds from the front direction to the microphone is attached over the microphone, the narrow top face of the tape-recorder having a pause knob having an inoperative position separate from a pause position and a rewind-and-fast-forward knob having an inoperative position separate from a rewind-and-fast-forward position, said movable sound reflector being hinged to the top face in a manner that the sound reflector can be held in tilted position for sound reflection, and the sound reflector having dents or holes which, in the closed position, interlocks both the pause knob and the rewind-and-fast-forward knob in their inoperative positions.
Claim 2
Dependent Claim
120 words
A chest-pocket type tape-recorder having a microphone on a narrow top face thereof, characterized in that a movable sound reflector for reflecting sounds from the front direction to the microphone is attached over the microphone, the narrow top face of the tape-recorder having a pause knob having an inoperative position separate from a pause position and a rewind-and-fast-forward knob having an inoperative position separate from a rewind-and-fast-forward position, said movable sound reflector being hinged to the top face in a manner that the sound reflector can be held in tilted position for sound reflection, and the sound reflector having dents or holes which, in the closed position, interlocks both the pause knob and the rewind-and-fast-forward knob in their inoperative positions.
Claim 3
Dependent Claim
132 words
A chest-pocket type tape-recorder having a microphone on a narrow top face thereof, characterized in that a movable sound reflector for reflecting sounds from the front direction to the microphone is attached over the microphone, a side face of the tape-recorder having a playing knob having an inoperative position separate from a playing position and a recording knob having an inoperative position separate from a recording position, said movable sound reflector being hinged to the top face in a manner that the sound reflector can be held in tilted position for sound reflection, and the sound reflector having an interlocking lever on the side face in a manner that in the closed position of the sound reflector the interlocking lever interlocks the playing knob and the recording knob in their inoperative positions.
Claim 4
Dependent Claim
132 words
A chest-pocket type tape-recorder having a microphone on a narrow top face thereof, characterized in that a movable sound reflector for reflecting sounds from the front direction to the microphone is attached over the microphone, a side face of the tape-recorder having a playing knob having an inoperative position separate from a playing position and a recording knob having an inoperative position separate from a recording position, said movable sound reflector being hinged to the top face in a manner that the sound reflector can be held in tilted position for sound reflection, and the sound reflector having an interlocking lever on the side face in a manner that in the closed position of the sound reflector the interlocking lever interlocks the playing knob and the recording knob in their inoperative positions.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-01-04 | 1980-07-05 | 1981-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-04 | 1984-07-05 | 1985-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-04 | 1988-07-05 | 1989-01-04 | $7700.00 | Window Closed / Lapsed |