US3638874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reel brake for an endless tape cartridge
Assignee: Pioneer Corp
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Filing: 1969-10-13
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Granted: 1972-02-01
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Expires: 1989-10-13
Abstract
Abstract An endless tape cartridge which comprises a rotatable reel carrying an endless tape, a tape guide roller, a pad and a pinch roller for feeding and guiding the endless tape, is further provided with a spring-biased, reciprocating reel-braking lever movable along a keyway guide groove in the bottom of the cartridge casing, with one toothed arcuate end engageable with a toothed annular recess within the reel and the other end engageable with a push rod mounted on the tape player to automatically release the brake acting on the reel upon insertion of the cartridge.
Inventors
- 👤 Nobuatsu Naito
- 👤 Kasuhiko Nakajima
- 👤 Yoshio Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:08
CPC Classifications
B; B65; B65H; B65H20/00; B65H20/26
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
227 words
An endless tape cartridge for use with a tape recorder or reproducer having a push rod extending into a cartridge receiving recess, said cartridge comprising: a reel rotatably mounted within said cartridge and carrying an endless tape, a tape guide roller, a pinch roller and a pad for feeding and guiding said tape during operation of said recorder, a brake lever carried by said cartridge and mounted for movement toward and away from said tape reel, including a slide portion engaging a groove formed within the bottom of said cartridge on the interior surface thereof, said brake lever having its outer end adapted to contact said push rod during insertion of said cartridge within said recorder recess, the inner end of said brake lever being formed with dovetail surfaces, cooperating dovetail surfaces provided within the cartridge groove to prevent movement of said lever in a direction away from said groove, said tape reel being provided with an annular recess on its lower face, circumferentially extending ratchet teeth carried by said annular recess, cooperating ratchet teeth carried by said brake lever at the inner end thereof and adapted to engage the ratchet teeth of said annular groove and means tending to bias said brake lever away from said reel to assure positive braking of said rotatable reel when said cartridge is removed from said recorder or reproducer recess.
Claim 2
Dependent Claim
227 words
An endless tape cartridge for use with a tape recorder or reproducer having a push rod extending into a cartridge receiving recess, said cartridge comprising: a reel rotatably mounted within said cartridge and carrying an endless tape, a tape guide roller, a pinch roller and a pad for feeding and guiding said tape during operation of said recorder, a brake lever carried by said cartridge and mounted for movement toward and away from said tape reel, including a slide portion engaging a groove formed within the bottom of said cartridge on the interior surface thereof, said brake lever having its outer end adapted to contact said push rod during insertion of said cartridge within said recorder recess, the inner end of said brake lever being formed with dovetail surfaces, cooperating dovetail surfaces provided within the cartridge groove to prevent movement of said lever in a direction away from said groove, said tape reel being provided with an annular recess on its lower face, circumferentially extending ratchet teeth carried by said annular recess, cooperating ratchet teeth carried by said brake lever at the inner end thereof and adapted to engage the ratchet teeth of said annular groove and means tending to bias said brake lever away from said reel to assure positive braking of said rotatable reel when said cartridge is removed from said recorder or reproducer recess.
Claim 3
Dependent Claim
37 words
The cartridge as claimed in claim 1 wherein said biasing means comprise: a coil spring having one end coupled to said brake lever intermediate of its ends and the other end fixed to a cartridge casing wall.
Claim 4
Dependent Claim
55 words
The cartridge as claimed in claim 2 wherein said groove receiving the sliding portion of said braking lever terminates inwardly of said casing wall, and said braking lever extends outwardly therefrom, through an opening in said casing wall to further guide said braking lever along its path of movement towards and away from said reel.
Claim 5
Dependent Claim
223 words
An endless tape cartridge for use with a tape recorder or reproducer having a member extendable into a cartridge receiving recess, said cartridge comprising: a reel rotatably mounted within said cartridge and carrying an endless tape, a tape guide roller, a pinch roller, a pad for feeding and guiding said tape during operation of said recorder, a brake lever carried by said cartridge and mounted for movement toward and away from said tape reel including a slide portion engaging a groove formed within the bottom of said cartridge on the interior surface thereof, said brake lever having its outer end adapted to contact said member during insertion of said cartridge within said recorder recess, the inner end of said brake lever being formed with dovetailed surfaces, cooperating dovetailed surfaces provided within the cartridge groove to prevent movement of said lever in a direction away from said groove, an annular recess formed within one face of said tape reel with circumferentially extending ratchet teeth carried by said annular recess, cooperating ratchet teeth carried by said brake lever at the inner end thereof and adapted to engage the ratchet teeth of said annular groove, and means tending to bias said brake lever away from said reel to assure positive braking of said rotatable reel when said cartridge is removed from said recorder or reproducer recess.
Claim 6
Dependent Claim
223 words
An endless tape cartridge for use with a tape recorder or reproducer having a member extendable into a cartridge receiving recess, said cartridge comprising: a reel rotatably mounted within said cartridge and carrying an endless tape, a tape guide roller, a pinch roller, a pad for feeding and guiding said tape during operation of said recorder, a brake lever carried by said cartridge and mounted for movement toward and away from said tape reel including a slide portion engaging a groove formed within the bottom of said cartridge on the interior surface thereof, said brake lever having its outer end adapted to contact said member during insertion of said cartridge within said recorder recess, the inner end of said brake lever being formed with dovetailed surfaces, cooperating dovetailed surfaces provided within the cartridge groove to prevent movement of said lever in a direction away from said groove, an annular recess formed within one face of said tape reel with circumferentially extending ratchet teeth carried by said annular recess, cooperating ratchet teeth carried by said brake lever at the inner end thereof and adapted to engage the ratchet teeth of said annular groove, and means tending to bias said brake lever away from said reel to assure positive braking of said rotatable reel when said cartridge is removed from said recorder or reproducer recess.
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) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |