US4490761A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Casette recorder cleaning unit
Assignee: LAKE MARY ACQUISITION Corp
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Filing: 1982-08-02
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Granted: 1984-12-25
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Expires: 2002-08-02
Abstract
Abstract A disposable bobbin for a cassette cleaner unit includes a filament spool which holds a cleaning filament that is prewetted with a cleaning fluid. The bobbin is packaged in an impermeable pouch which prevents evaporation of the cleaning fluid until its use in a video cassette player. The bobbin may be used in either Beta or VHS cassette cleaner units.
Inventors
- 👤 Victor W. Wolynski
- 👤 James G. Horian
- 👤 Robert L. Horian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:37
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/41; G11B23/00; G11B23/02; G11B23/04; G11B23/049
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
140 words
A replaceable bobbin for a cassette cleaner unit used for the purpose of cleaning a record and/or playback device, the combination comprising: a filament spool having a central hub with a pair of spaced retainer flanges which extend radially outward from the respective ends of the hub, and having coupling means on each end of the hub for engaging a bobbin spool in the cassette cleaner unit, a cleaning filament having one end attached to the filament spool and being wound around the hub and disposed between the flanges, said cleaning filament being moistened with a liquid cleaning agent to improve the cleaning action of the filament, and said spool and moistened filament being sealed in packaging material which prevents evaporation of the liquid cleaning agent prior to distribution to the end user for installation in the cassette cleaner unit.
Claim 2
Dependent Claim
140 words
A replaceable bobbin for a cassette cleaner unit used for the purpose of cleaning a record and/or playback device, the combination comprising: a filament spool having a central hub with a pair of spaced retainer flanges which extend radially outward from the respective ends of the hub, and having coupling means on each end of the hub for engaging a bobbin spool in the cassette cleaner unit, a cleaning filament having one end attached to the filament spool and being wound around the hub and disposed between the flanges, said cleaning filament being moistened with a liquid cleaning agent to improve the cleaning action of the filament, and said spool and moistened filament being sealed in packaging material which prevents evaporation of the liquid cleaning agent prior to distribution to the end user for installation in the cassette cleaner unit.
Claim 3
Dependent Claim
93 words
The replaceable bobbin as recited in claim 1 in which a measured amount of liquid cleaning agent is disposed on the cleaning filament, and an impermeable package material surrounds the filament spool and cleaning filament to prevent evaporation of the liquid cleaning agent, wherein the amount of liquid cleaning agent is selected such that upon removal of the impermeable package material and use of the replaceable bobbin in a cassette cleaner unit, the liquid cleaning agent has substantially evaporated before the cleaning filament has been totally processed through the equipment to be cleaned.
Claim 4
Dependent Claim
16 words
The replaceable bobbin as recited in claim 1 in which the liquid cleaning agent includes alcohol.
Claim 5
Dependent Claim
27 words
The replaceable bobbin as recited in claim 1 in which the liquid cleaning agent includes a fluorocarbon material and the impermeable package material is made of nylon.
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) | 1987-12-25 | 1988-06-25 | 1988-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-25 | 1992-06-25 | 1992-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-25 | 1996-06-25 | 1996-12-25 | $7700.00 | Window Closed / Lapsed |