Patent US3747939A successfully refreshed from Google Patents.
US3747939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape cartridge exchanging device
Assignee: Pioneer Corp
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Filing: 1970-11-10
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Granted: 1973-07-24
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Expires: 1990-11-10
Abstract
Abstract A tape cartridge exchanging device to be utilized on magnetic tape recorders for the purpose of exchanging two tape cartridges inserted into the magnetic tape recorder. The cartridge exchanging device has a forked lever that is activated by a plunger for simultaneously depressing and releasing the respective pinch rollers on a pair of tape cartridges. Spring connections bias the various levers to a neutral position.
Inventors
- 👤 T Iwasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:32
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/675; G11B15/68; G11B15/682; G11B15/683
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
242 words
A cartridge exchange device for exchanging two cartridges in a magnetic recorder, each cartridge having a movably mounted pinch roller therein, and said recorder including a driving capstan and a magnetic pickup head, said device comprising: a. support means for supporting the cartridges; b. engaging means for engaging one of said pinch rollers and said driving capstan while disengaging the other pinch roller and the driving capstan, and said engaging means including: a first pivotal support means positioned adjacent said supporting means; a forked lever positioned on said first pivotal support means having a first pair of projections on the side of said first pivotal support means towards said supporting means and a second pair of projections on the other side of said first pivotal support means; a second pivotal support means; and a plate lever having an angular recess, said second pivotal support means engaging said plate lever in said angular recess wherein said plate lever is operatively positioned between said second pair of projects; and c. actuating means, operatively coupled to said engaging means, for moving said forked lever about said first pivotal support means such that pivotal movement in a first direction causes said first pair of projections to force the engagement of one of said pinch rollers and said driving capstan and pivotal movement in the other direction causes said first pair of projections to force engagement of the other of said pinch rollers and said driving capstan.
Claim 2
Dependent Claim
242 words
A cartridge exchange device for exchanging two cartridges in a magnetic recorder, each cartridge having a movably mounted pinch roller therein, and said recorder including a driving capstan and a magnetic pickup head, said device comprising: a. support means for supporting the cartridges; b. engaging means for engaging one of said pinch rollers and said driving capstan while disengaging the other pinch roller and the driving capstan, and said engaging means including: a first pivotal support means positioned adjacent said supporting means; a forked lever positioned on said first pivotal support means having a first pair of projections on the side of said first pivotal support means towards said supporting means and a second pair of projections on the other side of said first pivotal support means; a second pivotal support means; and a plate lever having an angular recess, said second pivotal support means engaging said plate lever in said angular recess wherein said plate lever is operatively positioned between said second pair of projects; and c. actuating means, operatively coupled to said engaging means, for moving said forked lever about said first pivotal support means such that pivotal movement in a first direction causes said first pair of projections to force the engagement of one of said pinch rollers and said driving capstan and pivotal movement in the other direction causes said first pair of projections to force engagement of the other of said pinch rollers and said driving capstan.
Claim 3
Dependent Claim
34 words
The device of claim 1 wherein the actuating means includes a bar having a pin operatively positiOned in the angular recess of the plate lever for exerting a rotational movement to the plate lever.
Claim 4
Dependent Claim
31 words
The device of claim 2 further including a first and second spring means for resiliently holding, respectively, the forked lever and the bar of the plunger means in a fixed position.
Claim 5
Dependent Claim
28 words
The device of claim 3 where the first spring means is a U-shaped spring and the forked lever further includes a projection operatively extending between the U-shaped spring.
Claim 6
Dependent Claim
22 words
The device of claim 3 where the second spring means is connected between the bar of the plunger and the forked lever.
References Cited (Backward Citations)
US3217997A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |