Patent US3673351A successfully refreshed from Google Patents.
US3673351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape feed indicator device for a tape recorder
Assignee: Toshiba Corp
•
Filing: 1971-03-26
•
Granted: 1972-06-27
•
Expires: 1991-03-26
Abstract
Abstract A tape feed indicator device for a tape recorder comprising a switch for changing over a power source to a first or a second circuit in interlocking relationship with a device for changing a tape feed from a low to a high speed or vice versa; low tape feed indicator means included in the first circuit to be controlled by the power source; and means included in the second circuit for intermittently generating voltage when the second circuit is connected to the power source, thereby controlling the indication means by the intermittent voltage.
Inventors
- 👤 Takeharu Niioka
- 👤 Ryoji Hosokawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:45
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/54; G11B5/55; G11B15/00; G11B15/02; G11B15/10; G11B15/18; G11B15/46
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
106 words
For use with a tape recorder of the type having a source of voltage and switch means to produce low and high tape speeds, a tape feed indicator comprising: visual indication means; an intermittent voltage generating circuit; and a switch interlocked with the switch means of the tape recorder for connecting said visual indication means directly to the voltage source of the recorder to produce a steady state indication corresponding to one speed of tape travel and for connecting said visual indication means to the power source through said intermittent voltage generating circuit to produce an intermittent indication corresponding to a different speed of tape travel.
Claim 2
Dependent Claim
106 words
For use with a tape recorder of the type having a source of voltage and switch means to produce low and high tape speeds, a tape feed indicator comprising: visual indication means; an intermittent voltage generating circuit; and a switch interlocked with the switch means of the tape recorder for connecting said visual indication means directly to the voltage source of the recorder to produce a steady state indication corresponding to one speed of tape travel and for connecting said visual indication means to the power source through said intermittent voltage generating circuit to produce an intermittent indication corresponding to a different speed of tape travel.
Claim 3
Dependent Claim
19 words
A tape feed indicator as defined by claim 1 in which said visual indication means comprises an indicator light.
Claim 4
Dependent Claim
20 words
A tape feed indicator as defined by claim 1 in which said intermittent voltage generating circuit comprising an astable multi-vibrator.
Claim 5
Dependent Claim
167 words
For use with a tape recorder of the type having a source of voltage, first switch means to produce low and high tape speeds, and second switch means to position a head over a desired one of a plurality of tracks on the tape, a tape feed indicator comprising: a plurality of indicator lights equal in number to the number of tracks on the tape; an intermittent voltage generating circuit; a first switch interlocked with the second switch means to select one of said indicator lights corresponding to the tape track being used; and a second switch interlocked with the first switch means to energize that indicator light selected by said first switch directly from the voltage source of the recorder to produce a steady state indication corresponding to one speed of tape travel and for connecting the selected one of said indicator lights to the voltage source through said intermittent voltage generating circuit to produce an intermittent indication corresponding to a different speed of tape travel.
Claim 6
Dependent Claim
167 words
For use with a tape recorder of the type having a source of voltage, first switch means to produce low and high tape speeds, and second switch means to position a head over a desired one of a plurality of tracks on the tape, a tape feed indicator comprising: a plurality of indicator lights equal in number to the number of tracks on the tape; an intermittent voltage generating circuit; a first switch interlocked with the second switch means to select one of said indicator lights corresponding to the tape track being used; and a second switch interlocked with the first switch means to energize that indicator light selected by said first switch directly from the voltage source of the recorder to produce a steady state indication corresponding to one speed of tape travel and for connecting the selected one of said indicator lights to the voltage source through said intermittent voltage generating circuit to produce an intermittent indication corresponding to a different speed of tape travel.
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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |