US3827699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Head cleaner for cassette tapes
Assignee: US CAPACITORS Inc Corp TRUST Co
•
Filing: 1972-12-07
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Granted: 1974-08-06
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Expires: 1992-12-07
Abstract
Abstract A cleaning leader for magnetic tapes comprising a plastic substrate and a non-abrasive coating having unoriented metal oxide particles dispersed through a binder, providing high and low spots on a surface of the coating.
Inventors
- 👤 J Waugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:43
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/20; G11B23/26; G11B23/02; G11B23/04; G11B23/049; G11B5/00; G11B5/41; Y; Y10; Y10S; Y10S15/00; Y10S15/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
19 words
An elongated tape according to claim 1 wherein said cleaning section is at the lead end of said tape.
Claim 2
Dependent Claim
19 words
An elongated tape according to claim 1 wherein said cleaning section is at the trailing end of said tape.
Claim 3
Dependent Claim
18 words
An elongated tape according to claim 1 wherein said cleaning section is at both ends of said tape.
Claim 4
Dependent Claim
15 words
An elongated tape according to claim 1 wherein said binder is a polyurethane based binder.
Claim 5
Dependent Claim
27 words
An elongated tape according to claim 5 wherein said titanium dioxide is in an amount of from about 30 to 80 percent by weight of said coating.
Claim 6
Dependent Claim
43 words
A sensing head cleaning tape comprising: a. a polyester substrate and b. a non-abrasive coating carried by said substrate comprising unoriented titanium dioxide particles dispersed throughout a binder, said titanium dioxide particles providing high and low spots on a suRface of said coating.
Claim 7
Dependent Claim
17 words
A sensing head cleaning tape according to claim 7 wherein said binder is a polyurethane based binder.
Claim 8
Dependent Claim
29 words
A sensing head cleaning tape according to claim 8 wherein said titanium dioxide is in an amount of from about 30 to 80 percent by weight of said coating.
Claim 9
Dependent Claim
70 words
In a cassette wherein a magnetic tape having an information bearing section is passed over and in engagement with a sensing head, the improvement comprising: providing a cleaning portion as part of said tape, said cleaning portion comprising a plastic substrate and a non-abrasive coating thereon having unoriented titanium dioxide particles dispersed throughout a binder, said titanium dioxide particles providing high and low spots on a surface of said coating.
Claim 10
Dependent Claim
21 words
In a cassette according to claim 10 wherein said substrate is a polyester and said binder is a polyurethane based binder.
Claim 11
Dependent Claim
28 words
In a cassette according to claim 11 wherein said titanium dioxide particles are in the amount of from about 30 to 80 percent by weight of said coating.
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) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |