US4498115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic-tape cassette having a capstan cleaning device
Assignee: US Philips Corp
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Filing: 1982-07-16
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Granted: 1985-02-05
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Expires: 2002-07-16
Abstract
Abstract A magnetic-tape cassette provided with a device for cleaning the capstan of a magnetic-tape cassette apparatus comprises at least one wiper which is connected to the housing of the cassette and which comprises a wiping edge near its free end. During tape recording or playback the wiper extends to a location near the contact area of the magnetic tape and the capstan, the wiping edge being positioned against the capstan.
Inventors
- 👤 Heinrich Hofmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:35
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/04; G11B23/049
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
165 words
A magnetic-tape cassette having a device for cleaning the capstan of a magnetic-tape cassette apparatus, comprising: a housing, two reel hubs mounted within said housing for rotation, and a length of magnetic recording tape wound on and extending between said reel hubs, characterized in that the device comprises at least one wiper having a fixed end fixed with respect to the housing, and a free end having a wiping edge, the wiper extending from said fixed to said free ends in a direction opposite the direction of transport of the tape, to a location behind the tape near an area of contact of the magnetic tape with a capstan of a magnetic-tape apparatus into which the cassette has been inserted, said free end having a wiping edge arranged to bear against the capstan which is inserted behind the tape, said wiper including means for resiliently urging said free end against said capstan with moderate pressure, whereby capstan cleaning is accomplished during tape recording or playback.
Claim 2
Dependent Claim
165 words
A magnetic-tape cassette having a device for cleaning the capstan of a magnetic-tape cassette apparatus, comprising: a housing, two reel hubs mounted within said housing for rotation, and a length of magnetic recording tape wound on and extending between said reel hubs, characterized in that the device comprises at least one wiper having a fixed end fixed with respect to the housing, and a free end having a wiping edge, the wiper extending from said fixed to said free ends in a direction opposite the direction of transport of the tape, to a location behind the tape near an area of contact of the magnetic tape with a capstan of a magnetic-tape apparatus into which the cassette has been inserted, said free end having a wiping edge arranged to bear against the capstan which is inserted behind the tape, said wiper including means for resiliently urging said free end against said capstan with moderate pressure, whereby capstan cleaning is accomplished during tape recording or playback.
Claim 3
Dependent Claim
24 words
A cassette as claimed in claim 1, characterized in that said wiper comprises a felt pad glued directly to the housing of the cassette.
Claim 4
Dependent Claim
35 words
A cassette as claimed in claim 2, characterized in that said wiping edge is formed by a plastic material attached to the felt, and bears against the capstan surface against the direction of capstan rotation.
Claim 5
Dependent Claim
23 words
A cassette as claimed in claim 1, characterized in that said wiper is formed of a plastic material molded integrally with the housing.
Claim 6
Dependent Claim
23 words
A cassette as claimed in claim 4, wherein in said wiping edge bears against the capstan surface against the direction of capstan rotation.
Claim 7
Dependent Claim
40 words
A cassette as claimed in claim 5, characterized in that said wiper narrows from the fixed end to the free end, and defines a space between the wiper and an adjacent housing wall for collecting contaminants scraped from the capstan.
Claim 8
Dependent Claim
40 words
A cassette as claimed in claim 4, characterized in that said wiper narrows from the fixed end to the free end, and defines a space between the wiper and an adjacent housing wall for collecting contaminants scraped from the capstan.
Claim 9
Dependent Claim
22 words
A cassette as claimed in any one of claims 1-7, characterized in that the device comprises two wipers extending in opposite directions.
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) | 1988-02-05 | 1988-08-06 | 1989-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-05 | 1992-08-06 | 1993-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-05 | 1996-08-06 | 1997-02-05 | $7700.00 | Window Closed / Lapsed |