Patent US4639967A successfully refreshed from Google Patents.
US4639967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape wiping brush, particularly for magnetic tape cassettes and the like
Assignee: ATB SpA
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Filing: 1984-03-14
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Granted: 1987-02-03
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Expires: 2004-03-14
Abstract
Abstract The brush comprises a flexible reed having a mounting portion for attachment to the cassette such that the reed can be held adjacent the tape path, a tape contact zone being provided at the opposite end to the mounting portion having a contact liner adhering on one side of the reed and having a flap extending, at the opposite end to the mounting portion, beyond a tape contacting edge.
Inventors
- 👤 Abramo Bordignon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:26
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/04; G11B23/08; G11B23/087; G11B23/08707; G11B23/08721; G11B23/50; G11B23/502
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
116 words
A tape wiping brush, particularly for magnetic tape cassettes and the like, comprising a flexible reed extending over a substantially flat length and defining, at opposed ends, a mounting zone for attachment to a cassette and a tape pressure zone having a contact liner attached thereto, characterized in that said contact liner has a flap extending along a tape contacting edge at the opposite end to said mounting zone, said flexible reed being formed, at said contact edge, with a fold line extending in a substantially orthogonal direction to the direction of movement of said tape to define a portion sloping away from said tape, said flap being secured on said sloping portion of said reed.
Claim 2
Dependent Claim
116 words
A tape wiping brush, particularly for magnetic tape cassettes and the like, comprising a flexible reed extending over a substantially flat length and defining, at opposed ends, a mounting zone for attachment to a cassette and a tape pressure zone having a contact liner attached thereto, characterized in that said contact liner has a flap extending along a tape contacting edge at the opposite end to said mounting zone, said flexible reed being formed, at said contact edge, with a fold line extending in a substantially orthogonal direction to the direction of movement of said tape to define a portion sloping away from said tape, said flap being secured on said sloping portion of said reed.
Claim 3
Dependent Claim
69 words
A tape wiping brush according to claim 1, said mounting portion of said reed being adapted for coupling to a seat on said magnetic tape cassette, comprising at least one tab extending over a substantially middle section of said mounting portion and being inclined on the plane containing said flexible reed to diverge away from said plane toward said pressure zone on the same side as said contact liner.
Claim 4
Dependent Claim
37 words
A tape wiping brush according to claim 1, characterized in that said sloping portion diverges away from said tape with respect to the plane containing said flexible reed by an angle in the 1° to 89° range.
Claim 5
Dependent Claim
37 words
A tape wiping brush according to claim 1, characterized in that said sloping portion diverges away from said tape with respect to the plane containing said flexible reed by an angle in the 25° to 35° range.
Claim 6
Dependent Claim
33 words
A tape wiping brush according to claim 1, comprising, formed in said flexible reed between said mounting zone and said tape pressure zone, windows effective to improve the flexing properties of said reed.
Claim 7
Dependent Claim
41 words
A package of tape wiping brushes of the type according to claim 1, characterized in that a plurality of such brushes are arranged side-by-side and similarly oriented, adjacent brushes being mutually connected by crosspieces to form a continuous wiping brush web.
Claim 8
Dependent Claim
131 words
A tape wiping device, particularly for magnetic tape cassettes and the like, comprising a lamina having one end portion thereof defining a mounting zone for attachment to a cassette, remote from said mounting zone another end portion of said lamina defining a tape facing surface on one side of said lamina and a back surface on the opposite side of said lamina and a wiping liner covering said tape facing surface and leaving free said back surface, said wiping liner having a tape contacting surface portion and a further surface portion departing from said tape contacting surface portion in a direction away from said mounting zone, said further surface portion forming an angle with respect to said tape contacting surface portion at least in an operative condition of said wiping device.
Claim 9
Dependent Claim
131 words
A tape wiping device, particularly for magnetic tape cassettes and the like, comprising a lamina having one end portion thereof defining a mounting zone for attachment to a cassette, remote from said mounting zone another end portion of said lamina defining a tape facing surface on one side of said lamina and a back surface on the opposite side of said lamina and a wiping liner covering said tape facing surface and leaving free said back surface, said wiping liner having a tape contacting surface portion and a further surface portion departing from said tape contacting surface portion in a direction away from said mounting zone, said further surface portion forming an angle with respect to said tape contacting surface portion at least in an operative condition of said wiping device.
Claim 10
Dependent Claim
32 words
A device according to claim 7, wherein said further surface portion of said wiping liner defines a flap formation of said wiping liner extending beyond said another end portion of said lamina.
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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) | 1990-02-02 | 1990-08-04 | 1991-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-02 | 1994-08-04 | 1995-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-02 | 1998-08-04 | 1999-02-03 | $7700.00 | Window Closed / Lapsed |