US3834650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape cartridge
Assignee: MICROFILM RECORDING CO Ltd
•
Filing: 1973-03-30
•
Granted: 1974-09-10
•
Expires: 1993-03-30
Abstract
Abstract A tape cartridge for fully winding a tape and a leader of greater width than the tape within the storage chamber formed within the housing. A pair of oppositely disposed winding shoulders are formed one on each end wall of the housing and extend substantially circumferentially thereof to receive the marginal edges of the leader while permitting the narrower tape to pass therebetween to be wound onto a spool which is rotatable within the housing. A passage opens outwardly from the chamber from within the housing to provide access to a leader mounted on the shoulder to permit the leader to be driven out of the chamber by being engaged by a roller or the like.
Inventors
- 👤 P Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:50
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/04; G11B23/08; G11B23/107; G03; G03B; G03B21/00; G03B21/14; G03B21/32; G03B21/321; G03B21/323; G03B21/43; G03B27/00; G03B27/32; G03B27/52; G03B27/58; G03B27/587; G03B27/588
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
136 words
A tape cartridge comprising: a. a housing having a storage chamber formed therein adapted to rotatably receive a cylindrical spool bearing a tape and a leader, the leader being wider than the tape and having marginal edge portions projecting outwardly beyond the film; b. said chamber having a pair of oppositely disposed end walls; c. a pair of oppositely disposed annular winding shoulders integrally formed one on each end wall concentric with the spool and extending substantially circumferentially thereabout at a radius greater than the radius of the tape when wound on the spool, said shoulders being aligned to receive and support the marginal edges of said leader and spaced to permit the tape to pass therebetween and d. passage means opening into said chamber affording access to a leader supported on said shoulders in use.
Claim 2
Dependent Claim
136 words
A tape cartridge comprising: a. a housing having a storage chamber formed therein adapted to rotatably receive a cylindrical spool bearing a tape and a leader, the leader being wider than the tape and having marginal edge portions projecting outwardly beyond the film; b. said chamber having a pair of oppositely disposed end walls; c. a pair of oppositely disposed annular winding shoulders integrally formed one on each end wall concentric with the spool and extending substantially circumferentially thereabout at a radius greater than the radius of the tape when wound on the spool, said shoulders being aligned to receive and support the marginal edges of said leader and spaced to permit the tape to pass therebetween and d. passage means opening into said chamber affording access to a leader supported on said shoulders in use.
Claim 3
Dependent Claim
35 words
A tape cartridge as claimed in Claim 1 including conical bearing means formed on said oppositely disposed side walls, and cooperative conical bearing surfaces on the spool and supporting the spool on said bearing means
Claim 4
Dependent Claim
156 words
A tape cartridge comprising: a. a housing having a storage chamber formed therein having a pair of oppositely disposed end walls and side wall means extending therebetween; b. a cylindrical spool for winding a tape thereon of the type having a leader which is wider than the tape and has marginal edges projecting outwardly beyond the tape; c. bearing means formed on said end walls for mounting said spool for rotation in said chamber; d. a pair of oppositely disposed annular winding shoulders integrally formed one on each end wall concentric with the spool and extending substantially circumferentially thereabout at a radius greater than the radius of the tape when wound on the spool, said shoulders being aligned to receive and support the marginal edges of said leader and spaced to permit the tape to pass therebetween, and e. passage means opening into said chamber affording access to a leader supported on said shoulders in use.
Claim 5
Dependent Claim
156 words
A tape cartridge comprising: a. a housing having a storage chamber formed therein having a pair of oppositely disposed end walls and side wall means extending therebetween; b. a cylindrical spool for winding a tape thereon of the type having a leader which is wider than the tape and has marginal edges projecting outwardly beyond the tape; c. bearing means formed on said end walls for mounting said spool for rotation in said chamber; d. a pair of oppositely disposed annular winding shoulders integrally formed one on each end wall concentric with the spool and extending substantially circumferentially thereabout at a radius greater than the radius of the tape when wound on the spool, said shoulders being aligned to receive and support the marginal edges of said leader and spaced to permit the tape to pass therebetween, and e. passage means opening into said chamber affording access to a leader supported on said shoulders in use.
Claim 6
Dependent Claim
49 words
A tape cartridge as claimed in claim 3 wherein at least one of said end walls is formed with a drive shaft clearance passage axially aligned with said spool, said spool having passage means formed axially therein adapted to receive a drive shaft to rotate said spool in use.
Claim 7
Dependent Claim
35 words
A tape cartridge as claimed in claim 1 including a tape wound on said spool, said tape having a leader which has a length which is less than twice the circumferential length of said shoulders.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |