Patent US4116493A successfully refreshed from Google Patents.
Patent US3747941A successfully refreshed from Google Patents.
US3747941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape recording and/or play-back apparatus
Assignee: Individual
•
Filing: 1971-04-13
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Granted: 1973-07-24
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Expires: 1991-04-13
Abstract
Abstract An apparatus for recording and/or playing back magnetic tape recordings from a cassette, is provided with a fixed mounting plate on which are arranged two winding spindles and a capstan. A movable mounting plate, on which are arranged at least one magnetic head and a pressure roller is also provided. The movable mounting plate is locked in a retracted position by a latch member. The latch is released when the cassette is placed on the first mounting plate. The movable plate is thus moved by a spring force into an operating position in which the magnetic heads and the pressure roller project into the cassette. Two ejection keys are provided which are positioned so that they may be operated by the thumb and a finger of one hand to return the movable plate from the operating position to the retracted position. The latch will thereby return to the latching position and simultaneously strike the cassette so that the latter springs from the fixed mounting plate into the palm of the operating hand.
Inventors
- 👤 P Lely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:13
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/675; G11B15/67563; G11B15/67573
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
437 words
An apparatus for recording and/or playing back recordings from a magnetic tape which is accommodated in a cassette, said cassette having openings in a first wall thereof for receiving winding spindles and a driving capstan of said apparatus, and additional openings in a side wall pependicular to said first wall for receiving magnetic head means and a pressure roller of said apparatus for engaging the tape within said cassette, said apparatus comprising a housing, a fixed mounting plate accommodated within saiD housing for supporting said cassette, a pair of winding spindles and driving capstan rotatably mounted on said fixed mounting plate for receiving said cassette and driving the tape therein, a movable mounting plate arranged within said housing for movement between a retracted position and an operating position, magnetic head means and a pressure roller mounted on said movable mounting plate so as to be displacable toward and away from the openings in the side wall of said cassette, said magnetic head means and pressure roller being inserted into said openings when said movable mounting plate is displaced to the operating position, spring means acting on said movable mounting plate for urging said plate into theoperating position, latching means movable between a latched and unlatched position for engaging said movable mounting plate when in the latched position to lock said movable mounting plate in its retracted position, spring means actng on said latching means for urging it into said latched position, a latch releasng member connected to said latching means and engageable by said cassette when said cassette is placed in the operating position on said fixed mounting plate to displace said latching means against the force of said spring means acting thereon so as to release said movable mounting plate allowing it to move to said operating position under the influence of the spring means acting thereon, and manually operable resetting means for returning said movable mounting plate to its retracted position comprising at least one ejection key disposed beside a bearing surface for the cassette formed by said fixed mounting plate movable in a plane parallel to this plate, and lever means connected at one end thereof to said key and acting at its other end on said movable mounting plate against the action of the spring means acting thereon so that when said key is depressed said movable mounting plate will be returned to said retracted position and said latching means will be urged into the latched position by said spring means acting thereon which also causes said latch release member to act against said cassette to disengage it from the fixed mounting plate.
Claim 2
Independent Claim
437 words
An apparatus for recording and/or playing back recordings from a magnetic tape which is accommodated in a cassette, said cassette having openings in a first wall thereof for receiving winding spindles and a driving capstan of said apparatus, and additional openings in a side wall pependicular to said first wall for receiving magnetic head means and a pressure roller of said apparatus for engaging the tape within said cassette, said apparatus comprising a housing, a fixed mounting plate accommodated within saiD housing for supporting said cassette, a pair of winding spindles and driving capstan rotatably mounted on said fixed mounting plate for receiving said cassette and driving the tape therein, a movable mounting plate arranged within said housing for movement between a retracted position and an operating position, magnetic head means and a pressure roller mounted on said movable mounting plate so as to be displacable toward and away from the openings in the side wall of said cassette, said magnetic head means and pressure roller being inserted into said openings when said movable mounting plate is displaced to the operating position, spring means acting on said movable mounting plate for urging said plate into theoperating position, latching means movable between a latched and unlatched position for engaging said movable mounting plate when in the latched position to lock said movable mounting plate in its retracted position, spring means actng on said latching means for urging it into said latched position, a latch releasng member connected to said latching means and engageable by said cassette when said cassette is placed in the operating position on said fixed mounting plate to displace said latching means against the force of said spring means acting thereon so as to release said movable mounting plate allowing it to move to said operating position under the influence of the spring means acting thereon, and manually operable resetting means for returning said movable mounting plate to its retracted position comprising at least one ejection key disposed beside a bearing surface for the cassette formed by said fixed mounting plate movable in a plane parallel to this plate, and lever means connected at one end thereof to said key and acting at its other end on said movable mounting plate against the action of the spring means acting thereon so that when said key is depressed said movable mounting plate will be returned to said retracted position and said latching means will be urged into the latched position by said spring means acting thereon which also causes said latch release member to act against said cassette to disengage it from the fixed mounting plate.
Claim 3
Dependent Claim
53 words
The apparatus according to claim 1 wherein said resetting means comprises two ejection keys movable in a plane beneath and parallel to the fixed mounting plate and projecting through side walls of said housing which bound the cassette bearing surface and extend at right angles to the plane containing the two windings spindles.
Claim 4
Dependent Claim
54 words
The apparatus according to claim 1 wherein said lever means is a bell-crank lever pivotably mounted about a pivot fixedly arranged in the apparatus, said key being connected to one arm of said bell-crank lever, the other arm of the bell crank lever being coupled to the movable mounting plate through a pin-and-slot connection.
Claim 5
Dependent Claim
80 words
The apparatus according to claim 3 wherein said latching means which is releasable against a spring force comprises a leaf spring secured to the housing beneath the fixed mounting plate, a free end thereof being bent so as to form a lug which engages and locks said movable mounting plate when it is in the retracted position and wherein said latch releasing member comprises of a pin which projects through said fixed mounting plate and bears against said leaf spring.
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) | 1976-07-23 | 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 |