US4363046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deflectable transducer head assembly
Assignee: Sony Corp
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Filing: 1980-11-10
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Granted: 1982-12-07
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Expires: 2000-11-10
Abstract
Abstract A transducer head assembly for a video tape machine capable of supporting the magnetic head so that it can be moved transversely to the tape so that the head will be aligned with the magnetic signal track for different speeds and direction of movement of the tape as well as for situations when the tape is stopped. A pair of flexible supporting means are generally triangular shaped and have their rear edges attached to opposite sides of a supporting block and have their free ends connected to a connecting bar upon which the magnetic head is mounted. A coil is attached to the connecting bar and moves between one or more magnets such that when electrical signals are applied to the coil the connecting bar is moved to align the magnetic head. The spacing between the two flexible members is substantial so that a pantograph is formed which assures that the magnetic head moves substantially parallel to the surface of the tape and does not move in an arc.
Inventors
- 👤 Etsuro Saito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:20
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/58; G11B5/584; G11B5/588
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
133 words
A deflectable transducer head assembly comprising: (a) a transducer means for transducing signals; (b) a base member; (c) a pair of deflectable members spaced apart and mounted with first ends attached to said base member and extending parallel to each other and with second ends remote from said first ends and moveable together; (d) means connecting said second ends of said deflectable members together; (e) a moving coil mounted to move with said deflectable members in response to a control signal applied thereto; (f) magnetic means mounted adjacent said moving coil for supplying a magnetic flux thereto; and (g) said transducer means mounted on said connecting means and displaced in a predetermined direction to trace a signal track accurately in response to movement of said moving coil means relatively to said magnetic means.
Claim 2
Dependent Claim
133 words
A deflectable transducer head assembly comprising: (a) a transducer means for transducing signals; (b) a base member; (c) a pair of deflectable members spaced apart and mounted with first ends attached to said base member and extending parallel to each other and with second ends remote from said first ends and moveable together; (d) means connecting said second ends of said deflectable members together; (e) a moving coil mounted to move with said deflectable members in response to a control signal applied thereto; (f) magnetic means mounted adjacent said moving coil for supplying a magnetic flux thereto; and (g) said transducer means mounted on said connecting means and displaced in a predetermined direction to trace a signal track accurately in response to movement of said moving coil means relatively to said magnetic means.
Claim 3
Dependent Claim
19 words
A deflectable transducer head assembly according to claim 1 wherein said transducer means is connected to said connecting means.
Claim 4
Dependent Claim
21 words
A deflectable transducer head assembly according to claim 1 wherein said moving coil is connected to one of said deflectable means.
Claim 5
Dependent Claim
20 words
A deflectable transducer head assembly according to claim 1 wherein said moving coil means is connected to said connecting means.
Claim 6
Dependent Claim
21 words
A deflectable transducer head assembly according to claim 1 wherein said transducer means is connected to one of said deflectable means.
Claim 7
Dependent Claim
22 words
A deflectable transducer head assembly according to claim 1 wherein at least one of said deflectable member has a substantially triangular shape.
Claim 8
Dependent Claim
34 words
A deflectable transducer head assembly according to claim 6 wherein said one deflectable member has a triangular hole formed therein, a rib extending into said hole on at least one edge of said hole.
Claim 9
Dependent Claim
21 words
A deflectable transducer according to claim 7 wherein ribs extend into said hole on at least two edges of said hole.
Claim 10
Dependent Claim
18 words
A deflectable transducer according to claim 7 wherein ribs extend into said hole on all three sides thereof.
Claim 11
Dependent Claim
19 words
A deflectable transducer according to claim 6 wherein said one deflectable member is formed with a plurality of openings.
Claim 12
Dependent Claim
17 words
A deflectable transducer according to claim 10 wherein a plurality of arms separate said plurality of openings.
Claim 13
Dependent Claim
15 words
A deflectable transducer according to claim 11 wherein said arms are arcuate shaped in cross-section.
Claim 14
Dependent Claim
54 words
A deflectable transducer according to claim 3 wherein at least one of said deflectable members is formed with a round opening and said moving coil is round and is connected to said deflectable member about said round opening and said magnetic means is cylindrical shaped and is moveable into said opening and said coil.
Claim 15
Dependent Claim
17 words
A deflectable transducer according to claim 1 wherein said deflectable members are spaced a substantial distance apart.
Claim 16
Dependent Claim
24 words
A deflectable transducer according to claim 4 wherein said moving coil is planar and is mounted in a slot formed in said connecting means.
Claim 17
Dependent Claim
26 words
A deflectable transducer according to claim 15 comprising magnetic yoke means connected to said base means and said magnetic means connected to said magnetic yoke means.
Claim 18
Dependent Claim
30 words
A deflectable transducer according to claim 1 comprising a magnetic shield means attached to said base member to shield said transducer means from said magnetic means and said moving coil.
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) | 1985-12-06 | 1986-06-07 | 1986-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-06 | 1990-06-07 | 1990-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-06 | 1994-06-07 | 1994-12-07 | $7700.00 | Window Closed / Lapsed |