Patent US3881186A successfully refreshed from Google Patents.
US3881186A
Expired / Lapsed
US
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Incremental tape drive apparatus for tape recorders
Assignee: Kokusai Gijutsu Kaihatsu Co Ltd
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Filing: 1973-09-05
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Granted: 1975-04-29
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Expires: 1993-09-05
Abstract
Abstract In an incremental digital magnetic tape recorder wherein a magnetic tape is advanced intermittently for recording intermittent input signals, there is provided means for deflecting the mangetic tape away from the direction of its normal travel between a magnetic head and a tape take up reel.
Inventors
- 👤 Shunsaku Nakauchi
- 👤 Takeo Kato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:00
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/20
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
202 words
An incremental tape drive apparatus for intermittently advancing a tape past a recording head for the recording of intermittent signals, including in combination tape take-up and pay-out means, tape drive means for moving said tape in a take-up direction, recording head means past which said tape is to be intermittently advanced, tension roller means engaging the tape and having a relatively large mass for constantly applying to the tape a tension in the take-up direction, said tension roller means being interposed intermediate said tape drive means and said recording head means with the tension applied to the tape being insufficient to overcome the frictional resistance of said tape drive means whereby movement of the tape in the reverse direction is prevented, a single clamp means coacting with said recording head means for restraining said tape in recording position during intermittent recording operations, the tensioning force of said tension roller means being insufficient alone to overcome the frictional resistance of said clamp means, and tape deflecting means disposed intermediate said recording means and said tension roller means for deflecting said tape in a direction perpendicular to the normal travel thereof, whereby longitudinal stepping motion of the tape in the take-up direction is achieved.
Claim 2
Dependent Claim
202 words
An incremental tape drive apparatus for intermittently advancing a tape past a recording head for the recording of intermittent signals, including in combination tape take-up and pay-out means, tape drive means for moving said tape in a take-up direction, recording head means past which said tape is to be intermittently advanced, tension roller means engaging the tape and having a relatively large mass for constantly applying to the tape a tension in the take-up direction, said tension roller means being interposed intermediate said tape drive means and said recording head means with the tension applied to the tape being insufficient to overcome the frictional resistance of said tape drive means whereby movement of the tape in the reverse direction is prevented, a single clamp means coacting with said recording head means for restraining said tape in recording position during intermittent recording operations, the tensioning force of said tension roller means being insufficient alone to overcome the frictional resistance of said clamp means, and tape deflecting means disposed intermediate said recording means and said tension roller means for deflecting said tape in a direction perpendicular to the normal travel thereof, whereby longitudinal stepping motion of the tape in the take-up direction is achieved.
Claim 3
Dependent Claim
26 words
An incremental tape drive apparatus according to claim 1 wherein said tape deflecting means is operated in response to an intermittent input signal to be recorded.
Claim 4
Dependent Claim
50 words
An incremental tape drive apparatus according to claim 1 which further conprises a tape tensioning device located between said clamp means and the pay-out means for providing a predetermined amount of slack in said tape therebetween under a predetermined tension less than the tension applied by said tension roller means.
Claim 5
Dependent Claim
84 words
An incremental tape drive apparatus according to claim 1 which further comprises a second tape deflecting means for deflecting said tape away from the direction of its normal travel, and second clamp means interlocked with said second tape deflection means for fixedly clamping said tape, said second tape deflection means and said second clamp means being located between said recording head means and the tape pay-out means whereby when said second tape deflection means is operated, said tape is moved in the opposite direction.
Claim 6
Dependent Claim
22 words
An incremental tape drive apparatus according to claim 1 wherein said tape deflecting means is operated by a moving coil type actuator.
Claim 7
Dependent Claim
58 words
An incremental tape drive apparatus according to claim 1 furtHer including turn-on and turn-off control switch means controlling operation of said tape drive means, said turn-on and turn-off control switch means sensing the position of said tension roller means and responding to predetermined maximum and minimum positions of travel thereof for controlling operation of said tape drive means.
Claim 8
Dependent Claim
26 words
An incremental tape drive apparatus according to claim 6 wherein said tape deflecting means is operated in response to an intermittent input signal to be recorded.
Claim 9
Dependent Claim
50 words
An incremental tape drive apparatus according to claim 7 which further comprises a tape tensioning device located between said clamp means and the pay-out means for providing a predetermined amount of slack in said tape therebetween under a predetermined tension less than the tension applied by said tension roller means.
Claim 10
Dependent Claim
18 words
An incremental tape drive apparatus according to claim 8 wherein the apparatus is for a magnetic tape recorder.
Claim 11
Dependent Claim
22 words
An incremental tape drive apparatus according to claim 8 wherein said tape deflecting means is operated by a moving coil type actuator.
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) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |