US3729202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cassette tape recorder
Assignee: Individual
•
Filing: 1970-07-13
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Granted: 1973-04-24
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Expires: 1990-07-13
Abstract
Abstract A cassette tape recorder, wherein, when a cassette is placed on a deck, a main lever carrying magnetic heads, a pinch roller and the other required members are released to move toward the cassette, so that the magnetic heads engage the stretched portion of a magnetic tape and the pinch roller pinches the tape with a capstan shaft to drive the tape by the rotation of the capstan shaft.
Inventors
- 👤 R Wakabayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:44
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/02; G11B15/10; G11B15/675; G11B15/67581; G11B15/67584
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
481 words
A cassette tape recorder comprising: a recorder casing having a frame and a space for receiving a tape cassette; a forward and a reverse rotating member carried by said frame and disposed in said space coaxially with the axes of a pair of reels rotatably disposed in said cassette so as to cause a cassette tape to be displaced from one reel to the other reel, said forward rotating member being operated at least in recording and reproducing and said reverse rotating member being operated in rewinding the cassette tape; a main lever carried by said frame and displaceable toward the cassette; means for causing said lever to be released in the setting of said cassette in said space and returned to its initial position upon the removal of the cassette from said space; magnetic heads attached to said lever and positioned to face that portion of the cassette tape stretched between said reels through windows formed on a side of said cassette; means for urging said lever toward said cassette in a manner to cause said lever to be so displaced, when released, as to cause said magnetic heads to engage the stretched portion of said cassette tape; a capstan shaft carried by said frame; a pinch roller attached to said lever for depressing the stretched portion of said cassette tape toward the periphery of said capstan shaft upon the displacement of said lever; power transmitting means for driving said forward and reverse rotating members comprising a first device carried by said frame for transmitting power to said forward rotating member when said lever is displaced toward said cassette and a second device carried by said frame for transmitting power to said reverse rotating member, said second device being inoperative upon the movement of said lever toward said cassette and becoming operative for transmitting power to said reverse rotating member when said lever is displaced from said cassette; said first power transmitting device including a rockable lever carried by said frame and movable according to the displacement of said lever, a wheel carried by said forward rotating member, a wheel carried by said capstan shaft, a belt entrained about said wheels and a tensioning roller carried by said rockable lever and engaging said belt, and said second power transmitting device includes a second rockable lever carrying a friction roller, a wheel carried by said reverse rotating member, a second wheel carried by said capstan shaft, a belt entrained about said second wheel and said friction roller, a spring connected to said frame and said second rockable lever for moving said friction roller into engagement with said wheel on said reverse rotating member, said second rockable lever engaging said lever to cause said friction roller to be disengaged from said wheel on said reverse rotating member against the force of said spring upon the movement of said lever toward said cassette.
Claim 2
Dependent Claim
481 words
A cassette tape recorder comprising: a recorder casing having a frame and a space for receiving a tape cassette; a forward and a reverse rotating member carried by said frame and disposed in said space coaxially with the axes of a pair of reels rotatably disposed in said cassette so as to cause a cassette tape to be displaced from one reel to the other reel, said forward rotating member being operated at least in recording and reproducing and said reverse rotating member being operated in rewinding the cassette tape; a main lever carried by said frame and displaceable toward the cassette; means for causing said lever to be released in the setting of said cassette in said space and returned to its initial position upon the removal of the cassette from said space; magnetic heads attached to said lever and positioned to face that portion of the cassette tape stretched between said reels through windows formed on a side of said cassette; means for urging said lever toward said cassette in a manner to cause said lever to be so displaced, when released, as to cause said magnetic heads to engage the stretched portion of said cassette tape; a capstan shaft carried by said frame; a pinch roller attached to said lever for depressing the stretched portion of said cassette tape toward the periphery of said capstan shaft upon the displacement of said lever; power transmitting means for driving said forward and reverse rotating members comprising a first device carried by said frame for transmitting power to said forward rotating member when said lever is displaced toward said cassette and a second device carried by said frame for transmitting power to said reverse rotating member, said second device being inoperative upon the movement of said lever toward said cassette and becoming operative for transmitting power to said reverse rotating member when said lever is displaced from said cassette; said first power transmitting device including a rockable lever carried by said frame and movable according to the displacement of said lever, a wheel carried by said forward rotating member, a wheel carried by said capstan shaft, a belt entrained about said wheels and a tensioning roller carried by said rockable lever and engaging said belt, and said second power transmitting device includes a second rockable lever carrying a friction roller, a wheel carried by said reverse rotating member, a second wheel carried by said capstan shaft, a belt entrained about said second wheel and said friction roller, a spring connected to said frame and said second rockable lever for moving said friction roller into engagement with said wheel on said reverse rotating member, said second rockable lever engaging said lever to cause said friction roller to be disengaged from said wheel on said reverse rotating member against the force of said spring upon the movement of said lever toward said cassette.
Claim 3
Dependent Claim
84 words
A cassette tape recorder as set forth in claim 1 wherein said power transmitting means embodies a third device, said third device includes a third lever carried by said frame and having a roller engageable with said wheel of said forward rotating member and said friction roller on said second rockable lever, said roller transmitting the drive of said friction roller to said wheel of said forward rotating member upon the disengagement of said friction roller from said wheel of said reverse rotating member.
Claim 4
Dependent Claim
52 words
A cassette tape recorder as set forth in claim 2 wherein the lever of said third power transmitting device is rockably mounted on said frame and a spring engages one end of said lever with said frame for urging said transmitting roller into engagement with the wheel of said forward rotating member.
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) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |