Patent US3681539A successfully refreshed from Google Patents.
US3681539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape diverting device in a tape recorder apparatus with drum shift during tape engagement
Assignee: US Philips Corp
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Filing: 1970-07-20
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Granted: 1972-08-01
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Expires: 1990-07-20
Abstract
Abstract An apparatus for recording and/or playback of signals having a wide frequency spectrum carried on a tape carrier accommodated on a cassette. The cassette is provided with an opening across which the tape extends when not being played or not in an operative condition. The tape cassette is placed on the apparatus in a playback position on a supporting base. The apparatus has a cylindrically shaped drum mounted adjacent the cassette having its longitudinal axis at an angle to the axis normal to the principal plane of the cassette. A tape diverting device having a support member mounted for rotational movement about said drum and having at least one tape guide stud mounted thereon and projecting through the opening in the cassette when the cassette is placed on the apparatus for engaging the tape as the tape diverting device is rotated about the drum. Rotation of the supporting member of the tape diverting device will cause the tape guide stud to engage the tape and draw the tape out of the cassette and wind it, in a helical path, around the cylindrical surface of the drum to thereby place the tape in an operative position for playback in contact with transducer heads.
Inventors
- 👤 Walter Eibensteiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:30
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/60; G11B15/66; G11B15/665; G11B15/6653; G11B15/6655
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
313 words
In an apparatus for recording and/or playback of signals having a wide frequency spectrum carried on a tape carrier accommodated in a cassette, said cassette having an opening across which said tape will extend when not in the operative playback condition, said apparatus comprising a base for supporting thereon said cassette, a drum having a cylindrical surface supported on said base adjacent said cassette, said tape being helically wound thereabout when in an operative position, a tape diverting device movable between an inoperative condition and an operative condition for engaging and drawing a portion of said tape out of said cassette and around part of said drum surface in a helical path, said device comprising a support member formed integrally with said drum and being arranged on said apparatus for pivotal movement about an axis of rotation which is parallel to the longitudinal axis of said drum and offset therefrom, said longitudinal axis of said drum being shifted from a position further from the cassette than the axis of said supporting member prior to moving the tape diverting device to the operative condition to a position closer to said cassette than the axis of said supporting member when said supporting member and drum have been pivoted about said supporting member axis and said tape has been wound about the surface of said drum, and at least one tape guide stud mounted on said support member, said stud projecting through said cassette opening when said cassette is placed in a position on said apparatus for playback, whereby said tape stud will engage said tape and draw said tape out of the cassette and wrap said tape about a portion of said drum as said support member is pivoted about said axis of rotation so that said tape will be wound about said drum in a helical path and into an operative position for playback.
Claim 2
Dependent Claim
313 words
In an apparatus for recording and/or playback of signals having a wide frequency spectrum carried on a tape carrier accommodated in a cassette, said cassette having an opening across which said tape will extend when not in the operative playback condition, said apparatus comprising a base for supporting thereon said cassette, a drum having a cylindrical surface supported on said base adjacent said cassette, said tape being helically wound thereabout when in an operative position, a tape diverting device movable between an inoperative condition and an operative condition for engaging and drawing a portion of said tape out of said cassette and around part of said drum surface in a helical path, said device comprising a support member formed integrally with said drum and being arranged on said apparatus for pivotal movement about an axis of rotation which is parallel to the longitudinal axis of said drum and offset therefrom, said longitudinal axis of said drum being shifted from a position further from the cassette than the axis of said supporting member prior to moving the tape diverting device to the operative condition to a position closer to said cassette than the axis of said supporting member when said supporting member and drum have been pivoted about said supporting member axis and said tape has been wound about the surface of said drum, and at least one tape guide stud mounted on said support member, said stud projecting through said cassette opening when said cassette is placed in a position on said apparatus for playback, whereby said tape stud will engage said tape and draw said tape out of the cassette and wrap said tape about a portion of said drum as said support member is pivoted about said axis of rotation so that said tape will be wound about said drum in a helical path and into an operative position for playback.
Claim 3
Dependent Claim
77 words
The apparatus according to claim 1 further comprisIng a tape guide member located on said drum for guiding the tape along an edge thereof which faces said base of the apparatus, whereby the tape will bear upon said tape guide member when the cassette is placed on the apparatus with the tape diverting device in the inoperative condition, in which condition said tape guide stud will project through the opening of said cassette and engage the tape.
Claim 4
Dependent Claim
97 words
The apparatus according to claim 1 wherein said tape diverting device comprises two tape guide studs mounted on said supporting member, said studs projecting through said cassette opening for engagement with said tape when said cassette is placed on said apparatus, one of said tape guide studs engaging said tape for guiding the tape in one direction about said drum when said diverting device is rotated in that direction, the other of said studs engaging said tape in the same direction for maintaining said tape in a spaced relation between said first mentioned stud and the cassette.
Claim 5
Dependent Claim
18 words
The apparatus according to claim 1 wherein said tape is wrapped no more than 180* about said drum.
Claim 6
Dependent Claim
37 words
The apparatus according to claim 1 wherein said axis of rotation about which said supporting member is pivoted is arranged normal to the principal plane of the cassette when the cassette is placed in the playback position.
Claim 7
Dependent Claim
28 words
The apparatus according to claim 5 wherein the axis of said drum is inclined at an angle to the axis normal to the principal plane of the cassette.
Claim 8
Dependent Claim
55 words
The apparatus according to claim 1 further comprising means for rotating said tape diverting device, means for driving said tape when said tape has been drawn out around said drum into the operative playback condition and means for engaging said tape when said tape is in the operative playback condition for picking up said signals.
Claim 9
Dependent Claim
19 words
The apparatus according to claim 7 wherein said means for rotating said tape diverting device comprises a servo motor.
Claim 10
Dependent Claim
27 words
The apparatus according to claim 7 wherein said means for rotating said tape diverting device comprises a handle mounted on said support and extending above said drum.
Claim 11
Dependent Claim
18 words
The apparatus according to claim 7 wherein said means for picking up said signals comprises a magnetic head.
Claim 12
Dependent Claim
47 words
The apparatus according to claim 1 further comprising locking members mounted on said apparatus for locking said cassette in its playback position on the apparatus when said tape has been wound about said drum and means cooperating with said tape diverting device for actuating said locking member.
Claim 13
Dependent Claim
33 words
The apparatus according to claim 11 wherein said locking members operate to prevent further cassettes from being placed on the apparatus when said tape diverting device has been moved to the operative position.
Claim 14
Dependent Claim
42 words
The apparatus according to claim 12 wherein said locking members comprise a pair of bolts pivotally mounted on said apparatus, spring means attached to said bolts and link-members cooperating with said tape diverting device to pivot said bolts into the locking position.
Claim 15
Dependent Claim
46 words
The apparatus according to claim 1 further comprising means for preventing operation of said apparatus during the rotational movement of said tape diverting device, said apparatus being allowed to operate when said tape has been moved to an operative playback condition by said tape diverting device.
Claim 16
Dependent Claim
61 words
The apparatus according to claim 14 wherein said means for preventing operation of said apparatus comprises a switch mounted on said apparatus, and projecting means mounted on said support member of said diverting device for engagement with said switch whereby said switch is closed to allow operation of the apparatus when said supporting member has been rotated to the operative condition.
Claim 17
Dependent Claim
32 words
The apparatus according to claim 15 further comprising means for terminating operation of the apparatus which may have been initiated at the beginning of the rotational movement of said tape diverting device.
Claim 18
Dependent Claim
55 words
The apparatus according to claim 16 wherein said means for terminating operAtion of said apparatus comprises a lever pivotally mounted on said apparatus for engaging the operative switches of said apparatus and projecting means mounted on said support member for engaging said lever and displacing said lever for returning said switches to their inoperative positions.
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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |