US3672600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reel-to-reel tape storage apparatus
Assignee: DECISION DATA Inc A CORP OF
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Filing: 1969-04-02
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Granted: 1972-06-27
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Expires: 1989-04-02
Abstract
Abstract The disclosure describes an information tape storage apparatus without tape loop storage means or tape driving means interposed along the path of the tape as the tape moves from the information processing station to the take-up reel. To provide such tape motion, including the usual start-stop characteristics, a tachometer generates a signal indicative of tape speed which is compared differentially with a ramp signal to develop a control signal for a low inertia printed circuit motor that is connected to turn the take-up reel.
Inventors
- 👤 Robert A Carlson
- 👤 Thomas P Foley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:52
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/46; G11B15/54
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
189 words
In a reel-to-reel information tape storage system, tape transport apparatus comprising: tape supply means, a tape take-up reel supported rotatably and spaced from said supply means, an information processing station interposed between said supply means and said take-up reel, at least one tape guide means between said information processing station and said take-up reel to direct the tape past the information processing station in information transferring relationship and causing the tape to be moved to said take-up reel from said information processing station without intervening tape loop storage means or tape driving means, a motor coupled to said tape take-up reel to rotate the reel at controllably different angular velocities, sensing means to generate a speed signal representative of the speed of the tape and control means including a source of predetermined ascending and descending ramp waveform signals and means for comparing said speed signal with one of said ramp waveform signals and causing said motor speed to increase or decrease as necessary to make the rate of change of tape speed conform to said ramp waveform signal, thereby controlling the acceleration of said tape and said take-up reel.
Claim 2
Dependent Claim
189 words
In a reel-to-reel information tape storage system, tape transport apparatus comprising: tape supply means, a tape take-up reel supported rotatably and spaced from said supply means, an information processing station interposed between said supply means and said take-up reel, at least one tape guide means between said information processing station and said take-up reel to direct the tape past the information processing station in information transferring relationship and causing the tape to be moved to said take-up reel from said information processing station without intervening tape loop storage means or tape driving means, a motor coupled to said tape take-up reel to rotate the reel at controllably different angular velocities, sensing means to generate a speed signal representative of the speed of the tape and control means including a source of predetermined ascending and descending ramp waveform signals and means for comparing said speed signal with one of said ramp waveform signals and causing said motor speed to increase or decrease as necessary to make the rate of change of tape speed conform to said ramp waveform signal, thereby controlling the acceleration of said tape and said take-up reel.
Claim 3
Dependent Claim
61 words
A transport apparatus as set forth in claim 1 wherein said supply means includes a second motor, a tape supply reel coupled to said second motor, sensing means mounted to be responsive to changes in tension in the tape directed by said tape guide means, and means for controlling said motor speed at least partially in response to said sensing means.
Claim 4
Dependent Claim
25 words
A tape transport apparatus as set forth in claim 1 wherein said control means includes a tachometer to develop a voltage indicative of tape speed.
References Cited (Backward Citations)
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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 |