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US3916442A Expired / Lapsed US ⏱️ 0.0 years remaining

Mechanical cartridge eject mechanism

Assignee: Motorola Solutions Inc
•
Filing: 1974-05-28
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Granted: 1975-10-28
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Expires: 1994-05-28
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Abstract

Abstract A cartridge ejection mechanism, for a magnetic tape cartridge player which includes a chassis having a support member and sidewalls to form a cartridge receiving cavity, has an ejector control coupled to an actuator lever mounted to the support member for movement in the direction of insertion of the cartridge. The actuator lever includes a projection portion which extends in the path of the cartridge when the cartridge is inserted into the playing position. The end of the actuator lever opposite the projection portion includes an angled tab which is engageable with a cam end of a bar member mounted to the support member and having a roller mounted on the end opposite the cam ends. The roller is engageable with the cartridge to hold the cartridge in playing position when the cartridge is fully inserted into the tape player. First and second arms are pivotally mounted in the chassis and engageable with each other such that the pivotal movement of the first arm engages and pivotally moves the second arm. The ejector control is connected through a linkage to the first arm to move the same. The pivotal movement of the second arm engages the bar member to move the roller away from engagement with the cartridge. The movement of the bar member results in a camming action with the actuator lever to move the cartridge away from the play position to facilitate removal of the cartridge from the player.

Inventors

  • 👤 Donald J Dattilo
  • 👤 Alfred J Renzetti

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 00:33
CPC Classifications
G; G11; G11B; G11B25/00; G11B25/06

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 300 words
In a magnetic tape player having a housing with an opening therein to receive a cartridge having magnetic tape therein, the player having a transducer head positioned adjacent the cartridge receiving opening for cooperation with the tape in the cartridge, a manual cartridge eject mechanism comprising: actuator means mounted for sliding movement in the housing between an outward at rest position and an inward play position, the actuator means having a projecting member on one end, the projecting member being engageable with the cartridge as the cartridge is inserted into the cartridge receiving opening; locking means slideably mounted in the housing for movement in a direction substantially perpendicular to the movement of the actuator means and formed for camming engagement with the actuator means, the locking means having a roller mounted on one end thereof, the locking means moveable between a first position wherein the roller holds the cartridge in a fully inserted play position against the transducer head and a second position wherein the roller is clear of a cartridge in the cartridge receiving opening; spring means mounted in the housing for biasing the locking means into the first position; a first L-shaped arm pivotally mounted in the housing; and a second L-shaped arm pivotally mounted in the housing for movement in a plane substantially perpendicular to the plane of movement of the first arm, the first arm being positioned to engage and move the second arm, the movement of the second arm causing the same to engage the locking means to move the same from the first position to the second position, movement of the locking means causing a camming action between the locking meanS and the actuator means whereby the actuator means is moved outwardly, the projecting member thereof moving the cartridge away from the play position.
Claim 2
Dependent Claim 300 words
In a magnetic tape player having a housing with an opening therein to receive a cartridge having magnetic tape therein, the player having a transducer head positioned adjacent the cartridge receiving opening for cooperation with the tape in the cartridge, a manual cartridge eject mechanism comprising: actuator means mounted for sliding movement in the housing between an outward at rest position and an inward play position, the actuator means having a projecting member on one end, the projecting member being engageable with the cartridge as the cartridge is inserted into the cartridge receiving opening; locking means slideably mounted in the housing for movement in a direction substantially perpendicular to the movement of the actuator means and formed for camming engagement with the actuator means, the locking means having a roller mounted on one end thereof, the locking means moveable between a first position wherein the roller holds the cartridge in a fully inserted play position against the transducer head and a second position wherein the roller is clear of a cartridge in the cartridge receiving opening; spring means mounted in the housing for biasing the locking means into the first position; a first L-shaped arm pivotally mounted in the housing; and a second L-shaped arm pivotally mounted in the housing for movement in a plane substantially perpendicular to the plane of movement of the first arm, the first arm being positioned to engage and move the second arm, the movement of the second arm causing the same to engage the locking means to move the same from the first position to the second position, movement of the locking means causing a camming action between the locking meanS and the actuator means whereby the actuator means is moved outwardly, the projecting member thereof moving the cartridge away from the play position.
Claim 3
Dependent Claim 32 words
The magnetic tape player according to claim 1 wherein the camming engagement between the actuator means and the locking means also controls the movement of the locking means into the first position.
Claim 4
Dependent Claim 16 words
The magnetic tape player according to claim 1 wherein the spring means is a torsion spring.
Claim 5
Dependent Claim 71 words
The magnetic tape player according to claim 1 further including ejection control means and wherein the ejection control means includes an ejection button and linkage means for coupling the ejection button to the first L-shaped arm, the ejection button being moveable to cause the linkage means to move the first arm to thereby engage the second L-shaped arm to move the locking means from the first position to the second position.

References Cited (Backward Citations)

US3485500A Cited
US3632897A Cited
US3773334A Cited
US3684299A Cited
US3684300A Cited
US3747940A Cited
US3812537A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-10-27 1979-04-28 1979-10-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-10-27 1983-04-28 1983-10-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-10-27 1987-04-28 1987-10-28 $7700.00 Window Closed / Lapsed

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