US4524925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical data tape cartridge having wide angle read/write surface
Assignee: LaserCard Corp
•
Filing: 1984-02-17
•
Granted: 1985-06-25
•
Expires: 2004-02-17
Abstract
Abstract A tape cartridge for optical data recording and storage tape has a large diameter capstan tangent on three sides to transparent windows. Simultaneous operations may be performed both widthwise and lengthwise on the tape tracks by multiple laser energy beams and detectors. The capstan may be driven by external mechanical or magnetic means.
Inventors
- 👤 Richard Haddock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:36
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/04; G11B23/041; G11B23/048; G11B7/00; G11B7/002; G11B7/003
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
70 words
A cartridge for optical recording and storage tape comprising, a housing having a top wall, a bottom wall, and side walls, tape supply and take-up spools and a capstan with a tape path extending from the supply spool around the periphery of the capstan to the take-up spool, and at least one transparent window, defined in each said side wall parallel to tangent planes of the capstan in three locations.
Claim 2
Dependent Claim
70 words
A cartridge for optical recording and storage tape comprising, a housing having a top wall, a bottom wall, and side walls, tape supply and take-up spools and a capstan with a tape path extending from the supply spool around the periphery of the capstan to the take-up spool, and at least one transparent window, defined in each said side wall parallel to tangent planes of the capstan in three locations.
Claim 3
Dependent Claim
20 words
The apparatus of claim 1 wherein the diameter of the capstan is at least twice the diameter of said spools.
Claim 4
Dependent Claim
13 words
The apparatus of claim 1 wherein the number of side walls is six.
Claim 5
Dependent Claim
20 words
The apparatus of claim 1 wherein the walls of said cartridge are continuous, thereby forming a sealed optical tape cartridge.
Claim 6
Dependent Claim
18 words
The apparatus of claim 1 wherein the wrap angle of the tape path around the capstan exceeds 180°.
Claim 7
Dependent Claim
91 words
A cartridge for optical recording and storage tape comprising, a housing having a top wall, a bottom wall and side walls, tape supply and take-up spools and a capstan with a tape path extending from the supply spool to around the periphery of the capstan to the take-up spool, and at least one transparent window defined in each said side wall having regions parallel to tangent planes of the capstan in three locations, the furthest points of tangency forming an angle exceeding 90° when subtended to the center of said capstan.
Claim 8
Dependent Claim
91 words
A cartridge for optical recording and storage tape comprising, a housing having a top wall, a bottom wall and side walls, tape supply and take-up spools and a capstan with a tape path extending from the supply spool to around the periphery of the capstan to the take-up spool, and at least one transparent window defined in each said side wall having regions parallel to tangent planes of the capstan in three locations, the furthest points of tangency forming an angle exceeding 90° when subtended to the center of said capstan.
Claim 9
Dependent Claim
20 words
The apparatus of claim 6 wherein the diameter of the capstan is at least twice the diameter of said spools.
Claim 10
Dependent Claim
13 words
The apparatus of claim 6 wherein the number of side walls is six.
Claim 11
Dependent Claim
20 words
The apparatus of claim 6 wherein the walls of said cartridge are continuous, thereby forming a sealed optical tape cartridge.
Claim 12
Dependent Claim
18 words
The apparatus of claim 6 wherein the wrap angle of the tape path around the capstan exceeds 180°.
References Cited (Backward Citations)
US2159998A
Cited
US4037951A
Cited
US3854804A
Cited
US3950785A
Cited
US4138700A
Cited
EP0026552A2
Cited
EP0026550A2
Cited
US4431146A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-24 | 1988-12-24 | 1989-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-24 | 1992-12-24 | 1993-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-24 | 1996-12-24 | 1997-06-25 | $7700.00 | Window Closed / Lapsed |