US3972073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic tape cartridge ejection mechanism for multitrack cartridge players
Assignee: Motorola Solutions Inc
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Filing: 1974-12-23
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Granted: 1976-07-27
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Expires: 1994-12-23
Abstract
Abstract When the ignition switch of the automobile is turned off, a solenoid in the tape player is de-energized and the release of its armature pulls a small resilient roller into contact with the tape drive capstan. The capstan forces the roller into a wedged position with a lever arm which in turn activates a cantilevered eject mechanism to eject a tape cartridge. As the cartridge is pushed away from the capstan, it removes power from the capstan. If an attempt is made to insert a cartridge while the key is still "off", the power to the capstan would be restored and, as before, cause ejection of the cartridge.
Inventors
- 👤 Edwin Stanley Bara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:17
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/675
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
112 words
In a magnetic tape recorder/reproducer mechanism for utilizing a multitrack tape cartridge, a device for ejecting the cartridge, the device comprising: a capstan; lever means for ejecting the cartridge; friction means for transferring actuating force from the capstan to the lever means, and including a movable support member, a linking means for activating the support member, a friction roller rotatably mounted on the support member, the roller deriving power for ejection from the capstan; and electromagnetic means for actuating the linking means and the movable support member to bring the friction roller into wedging contact with the rotating capstan and a portion of the lever means, whereby the lever means is activated.
Claim 2
Dependent Claim
112 words
In a magnetic tape recorder/reproducer mechanism for utilizing a multitrack tape cartridge, a device for ejecting the cartridge, the device comprising: a capstan; lever means for ejecting the cartridge; friction means for transferring actuating force from the capstan to the lever means, and including a movable support member, a linking means for activating the support member, a friction roller rotatably mounted on the support member, the roller deriving power for ejection from the capstan; and electromagnetic means for actuating the linking means and the movable support member to bring the friction roller into wedging contact with the rotating capstan and a portion of the lever means, whereby the lever means is activated.
Claim 3
Dependent Claim
62 words
A device as in claim 1 wherein the lever means comprises; a cantilevered eject mechanism having upper and lower fingers; and a pivotally mounted lever arm for cooperating with the friciton means to exert force on the lower finger of the cantilevered eject mechanism, the lower finger coacting with the upper finger to cause ejection of the cartridge from the recorder/reproducer mechanism.
Claim 4
Dependent Claim
32 words
A device as in claim 1 wherein the electromagnetic means comprises an armature for exerting force on the linking means of the friction means, and an electromagnetic coil for activating the armature.
Claim 5
Dependent Claim
15 words
A device as in claim 3 wherein the armature is also adapted for manual activation.
Claim 6
Dependent Claim
65 words
A device as in claim 3 wherein the armature pulls the friction roller of the friction means into contact with the capstan when the electromagnetic means is deenergized, the friction means also includes a spring for moving the friction roller away from the capstan following ejection of the tape cartridge, and wherein the capstan is empowered whenever a cartridge is fully inserted into the player.
Claim 7
Dependent Claim
62 words
A device as in claim 3 wherein the electromagnetic means causes ejection of the cartridge when the electromagnetic coil is energized, means for momentarily energizing the electromagnetic means by the removal of power from the tape recorder/reproducer mechanism and the friction means also includes a spring for positioning the friction roller away from the capstan when the electromagnetic means is not energized.
Claim 8
Dependent Claim
21 words
A device as in claim 3 wherein the electromagnetic means further includes switching means for non-automatic activation of the electromagnetic coil.
Claim 9
Dependent Claim
36 words
A device as in claim 3 wherein the capstan is empowered after the coil is deactivated and until the cartridge ejection has occured for automatically ejecting a cartridge when power is removed generally from the device.
Claim 10
Dependent Claim
102 words
In a magnetic tape recorder/reproducer mechanism for utilizing a multitrack tape cartridge, the mechanism including a capstan for causing motion of the tape through the mechanism and a tape drive system for supplying motive power to the capstan, a device for causing ejection of the tape cartridge from the mechanism, the device including in combination: a lever system for ejecting the cartridge; friction means including a friction roller; and electromagnetic means for bringing the roller into contact with the rotating capstan and a portion of the lever system, whereby the friction roller is empowered by the capstan to activate the lever system.
Claim 11
Dependent Claim
102 words
In a magnetic tape recorder/reproducer mechanism for utilizing a multitrack tape cartridge, the mechanism including a capstan for causing motion of the tape through the mechanism and a tape drive system for supplying motive power to the capstan, a device for causing ejection of the tape cartridge from the mechanism, the device including in combination: a lever system for ejecting the cartridge; friction means including a friction roller; and electromagnetic means for bringing the roller into contact with the rotating capstan and a portion of the lever system, whereby the friction roller is empowered by the capstan to activate the lever system.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-27 | 1980-01-26 | 1980-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-27 | 1984-01-26 | 1984-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-27 | 1988-01-26 | 1988-07-27 | $7700.00 | Window Closed / Lapsed |