Patent US3561700A successfully refreshed from Google Patents.
US3561700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape apparatus including tape speed sensing device
Assignee: UNITED RESEARCH LAB
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Filing: 1969-05-12
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Granted: 1971-02-09
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Expires: 1989-05-12
Abstract
Abstract A magnetic wheel having a plurality of north and south poles arranged on the shaft of a takeup reel of a tape apparatus in which tape is fed to the takeup reel via a capstan from a supply reel. The tape is urged against the capstan by a pinch roller and the magnetic wheel is employed to generate a signal which is employed to disengage the pinch roller under certain circumstances in which the tape might otherwise break.
Inventors
- 👤 George Adams
- 👤 John Hawkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:51
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/01; H03K5/02; G; G01; G01P; G01P3/00; G01P3/42; G01P3/44; G01P3/48; G03; G03B; G03B21/00; G03B21/14; G03B21/32; G03B21/43; G11; G11B; G11B15/00; G11B15/02; G11B15/10; G11B15/18; G11B15/22; G11B15/26; G11B15/28; G11B15/29; G11B15/46
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
58 words
Tape apparatus comprising tape supply and takeup means operable at various speeds, a capstan and pinch roller adapted for cooperatively engaging the tape between said supply and takeup means, and signal generating means associated with one of the first said means and responsive to the speed thereof to generate a signal for disengaging the capstan and pinch roller.
Claim 2
Dependent Claim
58 words
Tape apparatus comprising tape supply and takeup means operable at various speeds, a capstan and pinch roller adapted for cooperatively engaging the tape between said supply and takeup means, and signal generating means associated with one of the first said means and responsive to the speed thereof to generate a signal for disengaging the capstan and pinch roller.
Claim 3
Dependent Claim
46 words
Apparatus as claimed in claim 1, wherein said supply and takeup means include shafts and said signal generating means includes a magnetic wheel on and rotating with one of the shafts and a sensor head adjacent the wheel and generating signals upon rotation of the wheel.
Claim 4
Dependent Claim
27 words
Apparatus as claimed in claim 2, wherein said wheel is a monolithic structure of permanent magnetic material having regularly spaced north and south poles peripherally distributed thereabout.
Claim 5
Dependent Claim
23 words
Apparatus as claimed in claim 2, wherein said wheel includes a solid support of nonmagnetic material and magnetic pieces distributed throughout said support.
Claim 6
Dependent Claim
27 words
Apparatus as claimed in claim 2, comprising brake means associated with at least one of said shafts and coupled to and controlled by said signal generating means.
Claim 7
Dependent Claim
22 words
Apparatus as claimed in claim 5, comprising solenoids coupled to said signal generating means and operating the pinch roller and break means.
Claim 8
Dependent Claim
20 words
Apparatus as claimed in claim 6, wherein the signal generating means includes signal level adjustment means coupled to said head.
Claim 9
Dependent Claim
47 words
Apparatus as claimed in claim 7, wherein the signal generating means includes an amplifier coupled to the adjustment means, a rectifier means coupled to the amplifier, a relay driver coupled to said rectifier, and relay means coupled to and driven by said driver and controlling said solenoids.
Claim 10
Dependent Claim
50 words
Apparatus as claimed in claim 8 comprising switches in series with the solenoids associated with said brake means and pinch roller, said relay means including contact elements adapted to cooperate with the switch in series with the pinch roller solenoid to bypass the switch in series with the brake means.
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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |