US4847718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cassette with erasing means
Assignee: NFO RES Inc
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Filing: 1987-12-11
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Granted: 1989-07-11
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Expires: 2007-12-11
Abstract
Abstract A cassette having improved erasing means is disclosed. The cassette has a top and a base which define a front wall. The front wall defines an opening through which the tape passes on its way to a take-up reel mounted in the base. A magnet which is aligned in a horizontal orientation is mounted adjacent the opening. As the tape passes the magnet, the signals on the tape are erased. The magnet is moved out of its erase position to allow redubbing of the tape.
Inventors
- 👤 Roger L. Miller
- 👤 Matthew D. Miklovic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:20
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/04; G11B23/08; G11B23/087; G11B5/00; G11B5/48; G11B5/488; G11B5/4893
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
145 words
A cassette having a base, a top and a pivoting door adjacent the top, a supply reel and a take-up reel mounted for movement on said base, tape mounted on said supply reel and extending along a path to said take-up reel, such path including a portion extending along a front edge of said base and said top adjacent said door, said top and said base defining a front wall adjacent said path portion, said front wall defining an opening for receiving said video tape as it moves from said path portion to said take-up reel, a magnet assembly mounted on said front wall adjacent said opening, said magnet assembly comprising a magnet and a member extending outwardly from said magnet, said member being mounted on and overlying said front wall, whereby the signals on the tape are erased as the tape passes said magnet.
Claim 2
Dependent Claim
145 words
A cassette having a base, a top and a pivoting door adjacent the top, a supply reel and a take-up reel mounted for movement on said base, tape mounted on said supply reel and extending along a path to said take-up reel, such path including a portion extending along a front edge of said base and said top adjacent said door, said top and said base defining a front wall adjacent said path portion, said front wall defining an opening for receiving said video tape as it moves from said path portion to said take-up reel, a magnet assembly mounted on said front wall adjacent said opening, said magnet assembly comprising a magnet and a member extending outwardly from said magnet, said member being mounted on and overlying said front wall, whereby the signals on the tape are erased as the tape passes said magnet.
Claim 3
Dependent Claim
33 words
A cassette, according to claim 1, wherein said magnet is mounted by said front wall closely adjacent said opening, whereby disassembly of the cassette is not required to remove the magnet for redubbing.
Claim 4
Dependent Claim
20 words
A cassette, according to claim 1, wherein the tape is spaced from said magnet when the tape passes the magnet.
Claim 5
Dependent Claim
148 words
A cassette having a base, a top and a pivoting door adjacent the top, a supply reel and a take-up reel mounted for movement on said base, tape mounted on said supply reel and extending along a path to said take-up reel, such path including a portion extending along a front edge of said base and said top adjacent said door, said top and said base defining a front wall adjacent said path portion, said front wall defining an opening for receiving said video tape as it moves from said path portion to said take-up reel and a magnet assembly mounted on said front wall adjacent said opening, said magnet assembly comprising a housing which receives a magnet and a leg extending outwardly from said housing, said leg being mounted on said front wall, whereby the signals on the tape are erased as the tape passes said magnet.
Claim 6
Dependent Claim
148 words
A cassette having a base, a top and a pivoting door adjacent the top, a supply reel and a take-up reel mounted for movement on said base, tape mounted on said supply reel and extending along a path to said take-up reel, such path including a portion extending along a front edge of said base and said top adjacent said door, said top and said base defining a front wall adjacent said path portion, said front wall defining an opening for receiving said video tape as it moves from said path portion to said take-up reel and a magnet assembly mounted on said front wall adjacent said opening, said magnet assembly comprising a housing which receives a magnet and a leg extending outwardly from said housing, said leg being mounted on said front wall, whereby the signals on the tape are erased as the tape passes said magnet.
Claim 7
Dependent Claim
136 words
A cassette having a base, a top and a pivoting door adjacent the top, a supply reel and a take-up reel mounted for movement on said base, tape mounted on said supply reel and extending along a path to said take-up reel, such path including a portion extending along a front edge of said base and said top adjacent said door, said top and said base defining a front wall adjacent said path portion, said front wall defining an opening for receiving said video tape as it moves from said path portion to said take-up reel, a spring biased arm pivotally mounted adjacent said front wall, a magnet mounted on said arm, wherein said magnet is adjacent said tape during normal play, and means for moving said magnet to an inactive position spaced from said tape.
Claim 8
Dependent Claim
136 words
A cassette having a base, a top and a pivoting door adjacent the top, a supply reel and a take-up reel mounted for movement on said base, tape mounted on said supply reel and extending along a path to said take-up reel, such path including a portion extending along a front edge of said base and said top adjacent said door, said top and said base defining a front wall adjacent said path portion, said front wall defining an opening for receiving said video tape as it moves from said path portion to said take-up reel, a spring biased arm pivotally mounted adjacent said front wall, a magnet mounted on said arm, wherein said magnet is adjacent said tape during normal play, and means for moving said magnet to an inactive position spaced from said tape.
Claim 9
Dependent Claim
147 words
A cassette having a base, a top and a pivoting door adjacent the top, a supply reel and a take-up reel mounted for movement on said base, tape mounted on said supply reel and extending along a path to said base and said top adjacent said door, said top and said base defining a front wall adjacent said path portion, said front wall defining an opening for receiving said video tape as it moves from said path portion to said take-up reel, a spring biased first lever pivotally mounted adjacent said front wall, said first lever having a magnet arm and an operating arm, a magnet mounted on said magnet arm, wherein said magnet is adjacent said tape during normal play, a second lever mounted on said base, said second lever engaging said operating arm to move said magnet to an inactive position spaced from said tape.
Claim 10
Dependent Claim
147 words
A cassette having a base, a top and a pivoting door adjacent the top, a supply reel and a take-up reel mounted for movement on said base, tape mounted on said supply reel and extending along a path to said base and said top adjacent said door, said top and said base defining a front wall adjacent said path portion, said front wall defining an opening for receiving said video tape as it moves from said path portion to said take-up reel, a spring biased first lever pivotally mounted adjacent said front wall, said first lever having a magnet arm and an operating arm, a magnet mounted on said magnet arm, wherein said magnet is adjacent said tape during normal play, a second lever mounted on said base, said second lever engaging said operating arm to move said magnet to an inactive position spaced from said tape.
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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) | 1992-07-10 | 1993-01-09 | 1993-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-10 | 1997-01-09 | 1997-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-10 | 2001-01-09 | 2001-07-11 | $7700.00 | Window Closed / Lapsed |