US3688055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guide plate for use with tape record/playback mechanism
Assignee: Sony Corp
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Filing: 1970-10-30
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Granted: 1972-08-29
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Expires: 1990-10-30
Abstract
Abstract A guide plate for use with a tape record/playback mechanism which is useful for insuring that a tape loop is properly placed around a drum having magnetic heads therein and an inclined tape guide member. Movable fingers form the tape into a loop and transport it and then drop the tape around the drum and inclined guide. If the tape is prematurely dropped it will not be in contact with the inclined guide. The guide plate will intercept a premature drop and lead the tape around the inclined guide.
Inventors
- 👤 Katsu Inaga
- 👤 Yotaro Miura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:07
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/60; G11B15/66; G11B15/665; G11B15/6653; H; H04; H04N; H04N5/00; H04N5/76; H04N5/78; H04N5/782
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
225 words
In an apparatus for recording and/or reproducing signals on a magnetic tape; the combination of a chassis, tape supply means containing a supply of the magnetic tape and being positioned on said chassis, a tape guide drum spaced from said tape supply means on the chassis and having at least one rotary magnetic head associated therewith for movement in a circular path corresponding to the circumference of said drum, tape guiding means for pulling out the tape from said tape supply means and forming the pulled-out tape into a loop that is disposed above the guide drum and that encompasses and is spaced outwardly from said drum, and for releasing the tape loop from said tape guiding means so that the tape loop drops therefrom about said drum to engage the surface of the tape at the inside of said loop with at least a portion of said circumference of the guide drum, at least one tape guidepost spaced from said drum and engageable by the tape when the latter is released from said tape guiding means for determining an angle formed between the tape engaged with said portion of the drum circumference and the plane of said circular path in which said head moves, and means for leading said tape loop about said guidepost when the tape loop drops from said tape guiding means.
Claim 2
Dependent Claim
225 words
In an apparatus for recording and/or reproducing signals on a magnetic tape; the combination of a chassis, tape supply means containing a supply of the magnetic tape and being positioned on said chassis, a tape guide drum spaced from said tape supply means on the chassis and having at least one rotary magnetic head associated therewith for movement in a circular path corresponding to the circumference of said drum, tape guiding means for pulling out the tape from said tape supply means and forming the pulled-out tape into a loop that is disposed above the guide drum and that encompasses and is spaced outwardly from said drum, and for releasing the tape loop from said tape guiding means so that the tape loop drops therefrom about said drum to engage the surface of the tape at the inside of said loop with at least a portion of said circumference of the guide drum, at least one tape guidepost spaced from said drum and engageable by the tape when the latter is released from said tape guiding means for determining an angle formed between the tape engaged with said portion of the drum circumference and the plane of said circular path in which said head moves, and means for leading said tape loop about said guidepost when the tape loop drops from said tape guiding means.
Claim 3
Dependent Claim
41 words
An apparatus according to claim 1, in which said means for leading the tape loop about said guidepost includes a guide member having a curved portion extending downwardly from a point adjacent said drum to a point directly above said guidepost.
Claim 4
Dependent Claim
50 words
An apparatus according to claim 1, in which said means for leading the tape loop about said guidepost includes a guide member having one end secured to an upstanding member adjacent said drum and the other end of said guide member is secured to the upper end of said guidepost.
Claim 5
Dependent Claim
63 words
An apparatus according to claim 1, in which said tape supply means is positioned on said chassis at a level substantially corresponding to an upper of said drum, and said tape guidepost is disposed below said level of the tape supply means between the latter and said drum and is slanted from the vertical in the direction extending upwardly away from said drum.
Claim 6
Dependent Claim
37 words
An apparatus according to claim 1, in which said tape supply means is a cassette containing reels on which the tape is wound, and a holder is mounted on said chassis for receiving and positioning said cassette.
Claim 7
Dependent Claim
65 words
An apparatus according to claim 5, in which said tape guiding means includes a plurality of fingers extendable into an opening of said cassette received by said holder and being movable out of said cassette opening in a substantially planar path that is disposed above said guide drum and has an arcuate section extending around at least said portion of the circumference of said drum.
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) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |