Patent US3902193A successfully refreshed from Google Patents.
US3902193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cassette type tape recorder/reproducer with cassette moving carriage
Assignee: Blaupunkt Werke GmbH
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Filing: 1973-08-30
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Granted: 1975-08-26
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Expires: 1993-08-30
Abstract
Abstract The carrier plate for the tape drive and magnetic heads is mounted on a scissors mount at each side. When a cassette is inserted all the way to an operating position in a guideway, the carrier plate is unlatched and descends on the scissors mount from a standby position to an operating position, while a catch prevents outward pressure against the cassette. In the meanwhile, the equipment has been switched on and an electromagnet holds a release lever in place. When the end of the tape is reached, or when the device is switched off, the electromagnet is deenergized, releasing a holding catch and setting in motion a mechanism that will raise the operating mechanism on its carrier and scissors mount and release the counter-pressure to eject the cassette, after which the standby position is restored. The various movements and latchings are powered by springs. Loading of the cassette provides energy to the spring system.
Inventors
- 👤 Walter Hapke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:57
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/675; G11B15/6751; G11B15/67513; G11B15/67515
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
289 words
A magnetic tape sound recorder and/or reproducer for operation with tape cassettes, comprising: a chassis (30) provided with a substantially horizontal cassette guideway (31) into which a cassette (51) is insertable; movable carrier means (10) on which are mounted drive means for causing tape contained in a cassette that is inserted in said guideway to be moved from place to place in said cassette; scissor mount means (11,12) at each side of said chassis and of said carrier means supporting said carrier means on said chassis; first latch means (43,87,110,66) and electromagnet means (48) arranged for holding or releasing said first latch means; control means responsive to insertion of a cassette into said guideway for moving said carrier means vertically downward toward said cassette to engage said operating mechanism therewith immediately after said cassette reaches its operating position in said guideway, and responsive to release of said first latch means for moving said carrier means vertically away from said cassette to disengage said drive means therefrom and thereafter to at least partially eject said cassette, said control means including, as a source of power for moving said carrier means, a system of springs arranged to be loaded by insertion of a cassette into operating position; second latch means for latching said carrier means in a standby position, after a predetermined movement of said carrier means away from said cassette, said second latch means being arranged so as not to be releasable to release said carrier following latching thereof until the cassette is substantially fully ejected or removed from said guideway; and means for controlling said electromagnet means to produce release of said first latch means in response to interruption of the supply of electric power to the sound recorder/reproducer.
Claim 2
Dependent Claim
289 words
A magnetic tape sound recorder and/or reproducer for operation with tape cassettes, comprising: a chassis (30) provided with a substantially horizontal cassette guideway (31) into which a cassette (51) is insertable; movable carrier means (10) on which are mounted drive means for causing tape contained in a cassette that is inserted in said guideway to be moved from place to place in said cassette; scissor mount means (11,12) at each side of said chassis and of said carrier means supporting said carrier means on said chassis; first latch means (43,87,110,66) and electromagnet means (48) arranged for holding or releasing said first latch means; control means responsive to insertion of a cassette into said guideway for moving said carrier means vertically downward toward said cassette to engage said operating mechanism therewith immediately after said cassette reaches its operating position in said guideway, and responsive to release of said first latch means for moving said carrier means vertically away from said cassette to disengage said drive means therefrom and thereafter to at least partially eject said cassette, said control means including, as a source of power for moving said carrier means, a system of springs arranged to be loaded by insertion of a cassette into operating position; second latch means for latching said carrier means in a standby position, after a predetermined movement of said carrier means away from said cassette, said second latch means being arranged so as not to be releasable to release said carrier following latching thereof until the cassette is substantially fully ejected or removed from said guideway; and means for controlling said electromagnet means to produce release of said first latch means in response to interruption of the supply of electric power to the sound recorder/reproducer.
Claim 3
Dependent Claim
49 words
A magnetic tape recorder and/or reproducer as defined in claim 1 in which said control means includes third latch means (39,83,102,61) for preventing application of ejection pressure on said cassette after it has been pushed into its operating position and before disengagement of said operating mechanism from said cassette.
Claim 4
Dependent Claim
126 words
A magnetic tape recorder and/or reproducer as defined in claim 1 in which: said control means includes on each side of said chassis a tension plate (33) pivoted (P1) on said chassis; each of said tension plates (33) is connected by a coupling member (34) to an arm (20,22) of one of said scissor mount means (11,12); each of said tension plates (33) is coupled with a pawl (35) provided with a guide slot (36); and a slider is provided in said guideway (31) and arranged to be displaced by insertion of a cassette, said slider having studs (32) projecting respectively beyond each side of said guideway, each such stud (32) passing through the said guide slot (36) of the adjacent one of said pawls (35).
Claim 5
Dependent Claim
63 words
A magnetic tape recorder and/or reproducer as defined in claim 3 in which said coupling member (34) between each of said scissors mount means (11,12) and the adjacent tension plate (33) is a spring means arranged for flipping so as to urge said scissors mount away from an intermediate position (which need not be the same intermediate position for both directing of movement).
Claim 6
Dependent Claim
43 words
A magnetic tape recorder and/or reproducer as defined in claim 4 in which said control means includes also tension spring means (37) between each stud (32) of said slider and the connection point of the corresponding pawl (35) to its tension plate (33).
Claim 7
Dependent Claim
97 words
A magnetic tape recorder and/or reproducer as defined in claim 3 in which said second latch means is provided by a pivoted control lever (38) having two angularly disposed arms on the end of one of which a edge projection (40) is provided to engage a stud at a connection of said scissor mount means and said carrier means for holding said carRier means (10) in its stand-by position (FIG. 3) and at the end of the other of which arms a catch is provided which is engageable with one of said studs (32) of said slider.
Claim 8
Dependent Claim
94 words
A magnetic tape recorder and/or reproducer as defined in claim 6 in which said sawtooth projection edge (40) of each control lever (38) constituting said second latch means has a long cam profile (42) and in which, further, studs (24) on arms (13,14) of said scissors mount means (11,12) at or near connections of said arms to said carrier means (10) engage said long cam profiles (42), after release of said first latch means by said electromagnet means (48), to cause said control lever (38) to release said slider for ejection of said cassette.
Claim 9
Dependent Claim
72 words
A magnetic tape recorder and/or reproducer as defined in claim 6 in which said first latch means controlled by said electromagnetic means (48) includes a release lever (43) having a first operating arm (44) for operative engagement with a tab (45) of said tension plate (33), and a second operating arm (46) arranged to engage said pawl (35) upon being released by said electromagnetic means (48), and thereby to release said pawl.
Claim 10
Dependent Claim
47 words
A magnetic tape recorder and/or reproducer as defined in claim 8 in which said control means includes main spring means (49) connected at one side or end with a tab (50) of said first operating arm (44) of said release lever (43) of said first latch means.
Claim 11
Dependent Claim
179 words
A magnetic tape recorder and/or reproducer as defined in claim 1 in which said control means include: a tension lever (75) on each side of said chassis (30) coupled by a spring (77) with a cross arm (76) and pivoted on said chassis on a common fulcrum (P6) with said cross arm (76); a slider (79) in said guideway (31) protruding through slots (78) in opposite walls of said guideway (31) for force-transmitting engagement with said tension levers (75); and an angle lever (81) on each side said chassis (30) pivoted thereon and having one arm (83) arranged to respond to engagement by said slider (79) and to latch said slider and a second arm (82) constituting said second latch means and arranged to hold a stud (92) provided on said slider (79); and in which said first latch means comprises release pawls (87) pivoted (P8) on each side of said chassis (30) arranged to be held or released by said electromagnet means (48) and arranged when so held to arrest movement of one end of said crossarm (76).
Claim 12
Dependent Claim
63 words
A magnetic tape recorder and/or reproducer as defined in claim 10 in which said carrier means (10) is provided at each side with actuating studs (89,90) which are disposed for moving said carrier means (10) on said scissors mount (11,12) vertically without substantial lateral or rotational deviation, said studs (89,90) being arranged for engagement, respectively, with opposite ends of said cross arm (76).
Claim 13
Dependent Claim
81 words
A magnetic tape recorder and/or reproducer as defined in claim 11, in which the respective ends of each of said angle levers (81) have cam edges (84,85), one of which (85) is adapted to move said angle lever by engagement with said slider (79), and the other of which (84) is adapted to move said angle lever by engagement of one of said first-mentioned studs (92) provided on said carrier means (10), thereby to release said slider and eject said cassette.
Claim 14
Dependent Claim
37 words
A magnetic tape recorder and/or reproducer as defined in claim 12 in which said first latch means includes release levers (87) each having an edge (88) serving as a stop for one of said cross arms (76).
Claim 15
Dependent Claim
32 words
A magnetic tape recorder and/or reproducer as defined in claim 13 in which each cross arm (76) is provided with a holding tab (93) arranged for engagement with said tension lever (75).
Claim 16
Dependent Claim
28 words
A magnetic tape recorder and/or reproducer as defined in claim 14 in which said angle lever (81) and said tension lever (75) are coupled by a spring (86).
Claim 17
Dependent Claim
38 words
A magnetic tape recorder and/or reproducer as defined in claim 15 in which said control means includes a spring for each of said scissors mount means arranged with one end on each of the mutually pivoted members thereof.
Claim 18
Dependent Claim
151 words
A magnetic tape recorder and/or reproducer as defined in claim 1 in which said first latch means (110) is constituted by members pivoted (P10) on each side of said chassis (30) and respectively arranged to arrest movement of said cam levers (105) by engagement in each case with a projection (107) on the cam lever (105), and in which, further, said control means includes, on each side of said chassis: a control lever (102) and a cam lever (105) pivoted on a common pivot (P9) on said chassis (30) and coupled by a first spring means (108); a slider (100) in said guideway (31) in engagement with said control lever (102); and a second spring means (112) connected between an arm of said control lever (102) and said chassis (30) for urging said control lever and said cam lever in a direction to favor engagement thereof with said first latch means.
Claim 19
Dependent Claim
141 words
A magnetic tape recorder and/or reproducer as defined in claim 17 in which: said control lever has a curved camming edge (104) limited by a projection (103), on which camming edge is supported a stud (24) of said carrier means (10) in the standby position of said carrier; and said camming lever (105) has a curved camming edge (106) having said projection (107) of said camming lever at one end, on which edge said stud (24) of said carrier means (10) is supported in the operating position of said carrier means and also following the release of said first latching means (110) by said electromagnet means (48) said projection (107) being arranged to be held latched by said first latch means (110) both when said carrier means (10) is in its standby position and when it is in its operating position.
Claim 20
Dependent Claim
35 words
A magnetic tape recorder and/or reproducer as defined in claim 18 in which a stop stud (109) is provided on said control lever (102) to limit the path of movement of said camming lever (105).
Claim 21
Dependent Claim
52 words
A magnetic tape recorder and/or reproducer as defined in claim 19 in which third spring means are provided on each of said scissors mount means for urging relative displacement of the arms of said scissors mount means in the sense to urge displacement of said carrier means (10) towards its operating position.
Claim 22
Dependent Claim
301 words
A magnetic tape recorder and/or reproducer as defined in claim 1 in which said control means includes: a control plate (58) on each side of said chassis linearly movable to front and rear on rollers (56,57) mounted on said chassis (30); a projection (62) on each of said control plates (58) extending through a slot in the adjacent wall of said guideway (31) into said guideway for engagement with a cassette therein; said control plates (58) each having a supporting edge (60) for supporting said carrier means (10) on a stud (24) thereof in its standby position except when a cassette is fully inserted in said guideway (31) and a guiding edge (61) forming a corner with said supporting edge (60) for guiding said carrier means to its operating position when a fully inserted cassette acting on said projection (62) of said control plate (58) has displaced said control plate rearwardly and for keeping said control plate from pressing said slider and ejecting said cassette until said carrier means has regained its standby position; holding lever means (66) pivoted (P4) on said chassis (30) having a camming edge (72) for engagement with a stud (55) mounted on an arm of said scissors mount means (11,12), and spring means (63) connected between each holding lever (66) and a point (64) on the adjacent control plate (58) for urging said camming surface (72) towards adjacent stud (55) of scissors mount means (11,12); said first latch means including pawl means (70,69) pivoted (P5) on said chassis (30) for latching each holding lever (66) against the force of said spring means (63) and said electromagnet means (48) beinG arranged to hold said pawl means (69,70) to arrest said holding levers (66) and to release said pawl means (69,70) and thereby release said holding levers (66).
Claim 23
Dependent Claim
40 words
A magnetic tape recorder and/or reproducer as defined in claim 21 in which said holding levers (66), for the purpose of their engagement with said studs (55) of said scissors mount means (11,12) each have a curved camming edge (72).
Claim 24
Dependent Claim
42 words
A magnetic tape recorder and/or reproducer as defined in claim 22 in which said pawl means (69) has an angularly projecting latching tab (70) and has a link member (63) with connecting the pawl means on both sides of said chassis (30).
Claim 25
Dependent Claim
47 words
A magnetic tape recorder and/or reproducer as defined in claim 23 in which second spring means (71) are provided for urging relative movement of arms of said scissors mount means (11,12) so as to bring said carrier means (10) towards its operating position from its standby position.
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) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |