Patent US4814749A successfully refreshed from Google Patents.
US4814749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protection system
Assignee: DENNEY EARL L JR
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Filing: 1987-10-02
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Granted: 1989-03-21
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Expires: 2007-10-02
Abstract
Abstract An audio and/or video system for transferring information stored on a disc, tape or film which prevents unauthorized or unintentional use or disclosure to third parties of the information contained on the disc, tape of film. The disc, tape or film is contained within a cassette having structure for sensing intrusion into the cassette. The sensing structure triggers an abrasive or cutting device which destroys the information on the disc, tape or film when intrusion into the cassette is sensed.
Inventors
- 👤 Monte Abramson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:28
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/28; G11B23/281; G11B23/02; G11B23/03; G11B23/0301; G11B23/0313; G11B33/00; G11B33/02
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
97 words
In an audio and/or video means for transporting or transmitting information on a disc, tape or film, the improvement which comprises a cassette means for preventing unauthorized or unintentional disclosure of the information on said disc, tape or film by removal of said disc, tape or film from said cassette means, said cassette means being provided with means for sensing intrusion into said cassette means, a rotatable abrasive or cutting means, and means for placing said abrasive or cutting means in contact with said disc, tape or film, responsive to a sensed intrusion into said cassette means.
Claim 2
Dependent Claim
97 words
In an audio and/or video means for transporting or transmitting information on a disc, tape or film, the improvement which comprises a cassette means for preventing unauthorized or unintentional disclosure of the information on said disc, tape or film by removal of said disc, tape or film from said cassette means, said cassette means being provided with means for sensing intrusion into said cassette means, a rotatable abrasive or cutting means, and means for placing said abrasive or cutting means in contact with said disc, tape or film, responsive to a sensed intrusion into said cassette means.
Claim 3
Dependent Claim
39 words
The audio and/or video means of claim 1 wherein said rotatable means comprises a spring operated means for rotating said abrasive or cutting means and placing said abrasive or cutting means in contact with said disc, tape or film.
Claim 4
Dependent Claim
17 words
The audio and/or video means of claim 2 wherein said sensing means in an impact responsive means.
Claim 5
Dependent Claim
37 words
The audio and/or video means of claim 3 wherein said impact responsive means comprises a line extending within said means and line connector means adapted to release said line upon impact whereby the rotatable means is activated.
Claim 6
Dependent Claim
18 words
The audio and/or video means of claim 4 wherein said line is held taut by said rotatable means.
Claim 7
Dependent Claim
17 words
The audio and/or video means of claim 2 including motor means for winding said spring operated means.
Claim 8
Dependent Claim
22 words
The audio and/or video means of claim 1 including door means for inserting said disc, tape or film within said cassette means.
Claim 9
Dependent Claim
28 words
The means of claim 1 including impact responsive means for activating said means for placing the abrasive or cutting means in contact with said disc, film or tape.
Claim 10
Dependent Claim
33 words
The means of claim 1 wherein said cassette means includes a spring operated means for rotating said abrasive or cutting means and placing said means in contact with said disc, tape or film.
Claim 11
Dependent Claim
18 words
The means of claim 9 wherein said rotatable means is held from rotation by an impact responsive means.
Claim 12
Dependent Claim
29 words
The means of claim 10 wherein said impact responsive means comprises a line extending within said cassette means and line connector means adapted to release said line upon impact.
Claim 13
Dependent Claim
15 words
The means of claim 11 wherein said line is held taut by said rotatable means.
Claim 14
Dependent Claim
107 words
In an audio and/or video system for tranferring information stored on a disc, tape or film, the improvement comprising a cassette means for preventing the unauthorized or unintentional disclosure of said information on said disc, tape or film by intrusion into said cassette means, said cassette means being provided with access means for authorized retrieval of said information on said disc, tape or film, means for sensing unauthorized intrusion into said cassette means, an abrasive or cutting means, and means for moving said abrasive or cutting means in destructive contact with said disc, tape or film, when said means for sensing intrusion senses intrusion into said cassette.
Claim 15
Dependent Claim
107 words
In an audio and/or video system for tranferring information stored on a disc, tape or film, the improvement comprising a cassette means for preventing the unauthorized or unintentional disclosure of said information on said disc, tape or film by intrusion into said cassette means, said cassette means being provided with access means for authorized retrieval of said information on said disc, tape or film, means for sensing unauthorized intrusion into said cassette means, an abrasive or cutting means, and means for moving said abrasive or cutting means in destructive contact with said disc, tape or film, when said means for sensing intrusion senses intrusion into said cassette.
Claim 16
Dependent Claim
19 words
The system of claim 13, wherein said means for moving said abrasive or cutting means comprises spring operated means.
Claim 17
Dependent Claim
14 words
The system of claim 14, wherein said sensing means is an impact responsive means.
Claim 18
Dependent Claim
37 words
The system of claim 15, wherein said impact responsive means comprises a line extending within said cassette means, and line connector means adapted to release said line upon impact whereby the abrasive or cutting means is activated.
Claim 19
Dependent Claim
19 words
The system of claim 16, wherein said line is held taut by said spring operated abrasive or cutting means.
Claim 20
Dependent Claim
18 words
The system of claim 14, wherein said cassette means comprises motor means for winding said spring operated means.
Claim 21
Dependent Claim
23 words
The system of claim 13, wherein said cassette means comprises door means for inserting said disc, tape or film within said cassette means.
Claim 22
Dependent Claim
26 words
The system of claim 19, wherein said door means are adapted to receive guidance means for inserting said disc, tape or film into said cassette means.
Claim 23
Dependent Claim
32 words
The system of claim 20, further comprising information retrieval means adapted for entry into said cassette means through said door means and for retrieving information stored on said disc, tape or film.
Claim 24
Dependent Claim
15 words
The system of claim 21, wherein said information retrieval means comprises an auxiliary power source.
Claim 25
Dependent Claim
33 words
The system of claim 21, wherein said cassette means includes a spring operated means for moving said abrasive or cutting means and placing said means in contact with said disc, tape or film.
Claim 26
Dependent Claim
18 words
The system of claim 23, wherein said moving means is held from movement by an impact responsive means.
Claim 27
Dependent Claim
29 words
The system of claim 24, wherein said impact responsive means comprises a line extending within said cassette means and line connector means adapted to release said line upon impact.
Claim 28
Dependent Claim
15 words
The system of claim 25, wherein said line is held taut by said moving means.
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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) | 1992-03-20 | 1992-09-19 | 1993-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-20 | 1996-09-19 | 1997-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-20 | 2000-09-19 | 2001-03-21 | $7700.00 | Window Closed / Lapsed |