Patent US4017902A successfully refreshed from Google Patents.
US4017902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cassette ejector for tape recorder
Assignee: Olympus Corp
•
Filing: 1975-10-03
•
Granted: 1977-04-12
•
Expires: 1995-10-03
Abstract
Abstract A cassette ejector for use in a tape recorder which uses a cassette utilizes a forward movement of a magnetic head and/or pinch roller into a window of a cassette when recording or playing back, to displace a cassette ejection member outside its operable region, thus making it incapable of an ejecting operation.
Inventors
- 👤 Masaaki Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:42
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/675; G11B15/67563; G11B15/67573
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
298 words
A cassette ejector for use with a cassette tape recorder having a slidable cassette cover movable from a closed to an open position, comprising: a sliding plate which carries at least one member associated with a recording or play back operation of the tape recorder, the sliding plate being movable from an operative position wherein the at least one member associated with a recording or play back operation is in operative contact with the cassette to an inoperative position wherein the at least one member associated with a recording or play back operation is out of operative contact with the cassette, the sliding plate being movable into the operative position when the slidable cassette cover is moved into the closed position and movable into the inoperative position when the slidable cassette cover is moved into the open position; an actuating roller mounted on the slidable cassette cover for movement with the slidable cassette cover; an operating pawl and an eject lever pivotally mounted on the sliding plate about a single axis, the operating pawl being movable from a first position wherein the operating pawl is positioned in the path of movement of the activating roller to a second position wherein the operating pawl is removed from the path of movement of the activating roller; means for causing the eject lever to rotate with the operating pawl and to cause an ejecting operation of the cassette when the operating pawl is engaged by the actuating roller when the slidable cassette cover is being moved from the closed to the open position; means for removing the operating pawl from the path of movement of the actuating roller when the sliding plate is in the operative position, thereby preventing an ejecting operating when the sliding plate is in the operative position.
Claim 2
Dependent Claim
298 words
A cassette ejector for use with a cassette tape recorder having a slidable cassette cover movable from a closed to an open position, comprising: a sliding plate which carries at least one member associated with a recording or play back operation of the tape recorder, the sliding plate being movable from an operative position wherein the at least one member associated with a recording or play back operation is in operative contact with the cassette to an inoperative position wherein the at least one member associated with a recording or play back operation is out of operative contact with the cassette, the sliding plate being movable into the operative position when the slidable cassette cover is moved into the closed position and movable into the inoperative position when the slidable cassette cover is moved into the open position; an actuating roller mounted on the slidable cassette cover for movement with the slidable cassette cover; an operating pawl and an eject lever pivotally mounted on the sliding plate about a single axis, the operating pawl being movable from a first position wherein the operating pawl is positioned in the path of movement of the activating roller to a second position wherein the operating pawl is removed from the path of movement of the activating roller; means for causing the eject lever to rotate with the operating pawl and to cause an ejecting operation of the cassette when the operating pawl is engaged by the actuating roller when the slidable cassette cover is being moved from the closed to the open position; means for removing the operating pawl from the path of movement of the actuating roller when the sliding plate is in the operative position, thereby preventing an ejecting operating when the sliding plate is in the operative position.
Claim 3
Dependent Claim
52 words
A cassette ejector in accordance with claim 1 wherein the means for causing the eject lever to rotate with the operating pawl comprises a detent formed on the eject lever which is engaged by the operating pawl when the operating pawl is caused to rotate by the action of the actuating roller.
Claim 4
Dependent Claim
133 words
A cassette ejector in accordance with claim 1 wherein the means for removing the operating pawl from the path of movement of the actuating roller comprises: an extension in the sliding plate extending in a plane perpendicular to the path of movement of the cassette cover, the extension including a cam slot therein; a rocking lever pivotally mounted at one end on the body of the tape recorder and at the other end on a shaft extending through the cam slot in the extension of the sliding plate, the operating pawl and eject lever being mounted on the shaft; the cam slot including a pair of upper and lower regions which extend in a path parallel to the path of movement of the sliding plate which are interconnected by an intermediate inclined region.
Claim 5
Dependent Claim
125 words
Apparatus for preventing erroneous ejection of a cassette in a cassette type tape recorder, said recorder having: a recess for receiving a cassette; first means movable between a first and second position for respectively uncovering and covering said recess; second means responsive to movement of said first means from said first to said second position for ejecting a cassette; a record/playback assembly; third means movable between a first and second position for respectively moving said assembly into an engaged and a disengaged position with the cassette, said third means including means for displacing said second means out of the path of movement of said first means when said third means is in the first position to prevent the accidental occurrence of a cassette ejection operation.
Claim 6
Dependent Claim
125 words
Apparatus for preventing erroneous ejection of a cassette in a cassette type tape recorder, said recorder having: a recess for receiving a cassette; first means movable between a first and second position for respectively uncovering and covering said recess; second means responsive to movement of said first means from said first to said second position for ejecting a cassette; a record/playback assembly; third means movable between a first and second position for respectively moving said assembly into an engaged and a disengaged position with the cassette, said third means including means for displacing said second means out of the path of movement of said first means when said third means is in the first position to prevent the accidental occurrence of a cassette ejection operation.
Claim 7
Dependent Claim
201 words
A cassette ejector for use with a cassette tape recorder, comprising a rocking lever which is pivotally mounted at one end on a body of the tape recorder; a rocking shaft carried by the other end of the rocking lever and extending in a direction perpendicular to the axis thereof; a cam slot formed in a sliding plate which carries at least one member associated with a recording or play back operation of the tape recorder, the rocking shaft freely extending through the cam slot; an eject lever pivotally mounted on the rocking shaft and having its one end located opposite to the bottom of a cassette which is loaded into the tape recorder, the eject lever including an engaging portion; and an actuating member mounted on the body of the tape recorder for urging the engaging portion of the eject lever, a movement of the sliding plate to its recording or play back position being effective to rock the rocking shaft, whereby the engaging portion of the eject lever is retracted from the path of movement of the actuating member, thus preventing an ejecting operation by the eject lever during a recording or play back operation of the tape recorder.
Claim 8
Dependent Claim
201 words
A cassette ejector for use with a cassette tape recorder, comprising a rocking lever which is pivotally mounted at one end on a body of the tape recorder; a rocking shaft carried by the other end of the rocking lever and extending in a direction perpendicular to the axis thereof; a cam slot formed in a sliding plate which carries at least one member associated with a recording or play back operation of the tape recorder, the rocking shaft freely extending through the cam slot; an eject lever pivotally mounted on the rocking shaft and having its one end located opposite to the bottom of a cassette which is loaded into the tape recorder, the eject lever including an engaging portion; and an actuating member mounted on the body of the tape recorder for urging the engaging portion of the eject lever, a movement of the sliding plate to its recording or play back position being effective to rock the rocking shaft, whereby the engaging portion of the eject lever is retracted from the path of movement of the actuating member, thus preventing an ejecting operation by the eject lever during a recording or play back operation of the tape recorder.
References Cited (Backward Citations)
US3810242A
Cited
US3759529A
Cited
US3893186A
Cited
US3747941A
Cited
US3855627A
Cited
US3902681A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-11 | 1980-10-11 | 1981-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-11 | 1984-10-11 | 1985-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-11 | 1988-10-11 | 1989-04-12 | $7700.00 | Window Closed / Lapsed |