Patent US3756487A successfully refreshed from Google Patents.
US3756487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple selective single tape cartridge drive from a constant drive mechanism
Assignee: PRECISION DESIGN CORP
•
Filing: 1972-08-14
•
Granted: 1973-09-04
•
Expires: 1992-08-14
Abstract
Abstract A constant drive mechanism for driving multiple single tape cartridges, having a slotted sleeve fitting over a constant drive capstan spindle and positioned between the pressure rollers of each of the tape cartridges, that when rotated allows selective ones of the pressure rollers of the tape cartridges to contact the capstan spindle and be selectively driven.
Inventors
- 👤 L Pechi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:41
CPC Classifications
B; B65; B65H; B65H20/00; B65H20/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
114 words
A single cartridge tape drive mechanism comprising, a spindle for driving pressure rollers in single cartridge tape units, means for constantly rotating said spindle, means for positioning a plurality of tape cartridges with their pressure rollers biased to contact the spindle along its length, a sleeve encircling said spindle and positioned between said spindle and said cartridges, said sleeve having slots spaced along the length thereof in alignment with said pressure rollers for allowing driving contact between the pressure rollers and said spindle, said slots being circumferentially spaced one to the other so that only one pressure roller contacts said spindle at a time, and said spindle being rotatable relative to the pressure rollers.
Claim 2
Dependent Claim
114 words
A single cartridge tape drive mechanism comprising, a spindle for driving pressure rollers in single cartridge tape units, means for constantly rotating said spindle, means for positioning a plurality of tape cartridges with their pressure rollers biased to contact the spindle along its length, a sleeve encircling said spindle and positioned between said spindle and said cartridges, said sleeve having slots spaced along the length thereof in alignment with said pressure rollers for allowing driving contact between the pressure rollers and said spindle, said slots being circumferentially spaced one to the other so that only one pressure roller contacts said spindle at a time, and said spindle being rotatable relative to the pressure rollers.
Claim 3
Dependent Claim
29 words
A single cartridge tape drive mechanism as claimed in claim 1 in which, each of said single cartridge tape units having pressure rollers being aligned parallel to said shaft.
Claim 4
Dependent Claim
26 words
A single cArtridge tape drive mechanism as claimed in claim 2 in which, the shafts of each of the pressure rollers being parallel to said spindle.
Claim 5
Dependent Claim
34 words
A single cartridge tape drive mechanism as claimed in claim 1 in which, said sleeve having indexing means for showing the relative positioning of each of the slots to each of the pressure rollers.
Claim 6
Dependent Claim
30 words
A single cartridge tape drive mechanism as slaimed in claim 1 in which, said slots only having an arcuate opening sufficient to allow said pressure roller to contact said spindle.
References Cited (Backward Citations)
US3388846A
Cited
US3432082A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |