US4378917A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape-end detecting device
Assignee: Faurecia Clarion Electronics Co Ltd
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Filing: 1980-11-05
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Granted: 1983-04-05
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Expires: 2000-11-05
Abstract
Abstract A tape-end detecting device wherein a magnet member fitted to a lower portion of a reel turntable is disposed so as to be spaced from a chassis, a printed circuit board is disposed in the so formed space between the magnet member and the chassis and a magnetic sensing element is fixed to the chassis by the printed circuit board.
Inventors
- 👤 Tokuji Negishi
- 👤 Yukio Ito
- 👤 Satoshi Takagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:12
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/02; G11B15/05; G11B15/093
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
94 words
In a tape-end detecting device for use in a tape recorder, said tape recorder having a chassis and a reel turntable spaced from and supported for rotation with respect to said chassis, which comprises a magnet member supported on a lower portion of said reel turntable so as to rotate conjointly therewith and detector means for detecting variation in a magnetic field caused by rotation of said magnet member, wherein the improvement comprises: a printed circuit board disposed on said chassis, said detector means being fixed to said chassis through said printed circuit board.
Claim 2
Dependent Claim
94 words
In a tape-end detecting device for use in a tape recorder, said tape recorder having a chassis and a reel turntable spaced from and supported for rotation with respect to said chassis, which comprises a magnet member supported on a lower portion of said reel turntable so as to rotate conjointly therewith and detector means for detecting variation in a magnetic field caused by rotation of said magnet member, wherein the improvement comprises: a printed circuit board disposed on said chassis, said detector means being fixed to said chassis through said printed circuit board.
Claim 3
Dependent Claim
34 words
A device according to claim 1, wherein said detector means is a magnetic sensing element and said printed circuit board has at least a circuit for processing an output of the magnetic sensing element.
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) | 1986-04-04 | 1986-10-04 | 1987-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-04 | 1990-10-04 | 1991-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-04 | 1994-10-04 | 1995-04-05 | $7700.00 | Window Closed / Lapsed |