Patent US4142217A successfully refreshed from Google Patents.
US4142217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switching device for a tape recorder
Assignee: DEWEK VEREINIGTE DEUTSCHE ELECTRONIC-WERKE GmbH
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Filing: 1977-10-17
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Granted: 1979-02-27
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Expires: 1997-10-17
Abstract
Abstract A tape recorder with a motor-containing-drive device for normal forward running (record or playback) and for fast rewinding of the recording tape, and a carrier plate on which the magnetic heads are arranged. The carrier plate is displaceable in its plane with the corresponding drive device of the tape by operating elements for setting of the operating modes "record" or "playback," whereby by the displacement of the carrier plate into its operating position, a switch, which sets the motor of the drive device in operation, is closed and by which the magnetic heads are brought into engagement on the recording tape. The operating elements for the fast rewinding are set for a displacement of the carrier plate however only over a portion of its displacement path. The switch for the motor current is coupled with the carrier plate such that it closes with the displacement of the carrier plate over this portion of its displacement path in the direction of the operating position of the carrier plate.
Inventors
- 👤 Helmut Laufer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:35
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/02; G11B15/10; G11B15/18
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
199 words
A tape playback device comprising first drive means for driving a recording tape for playback, second drive means for driving the recording tape for fast winding, a motor means for being selectively operatively coupleable with said first and second drive means for driving the recording tape, respectively, said motor means including a motor circuit, a magnetic head means for playback of sound events, a carrier plate constituting a carrier for said magnetic head means and arranged displaceable in its plane, a first operating element means arranged for bringing said first drive means into operation with the tape and for displacing said carrier plate through a first displacement to a first operating position wherein the tape abuts said magnetic head means, second operating element means arranged for bringing said second drive means into operation with the tape and for displacing said carrier plate to a second operating position the latter constituting a portion of said first displacement to said first operating position, switch means for closing said motor circuit, said switch means being coupled with said carrier plate such that said switch means is closed when said carrier plate is displaced into said first and second second operating positions, respectively.
Claim 2
Dependent Claim
199 words
A tape playback device comprising first drive means for driving a recording tape for playback, second drive means for driving the recording tape for fast winding, a motor means for being selectively operatively coupleable with said first and second drive means for driving the recording tape, respectively, said motor means including a motor circuit, a magnetic head means for playback of sound events, a carrier plate constituting a carrier for said magnetic head means and arranged displaceable in its plane, a first operating element means arranged for bringing said first drive means into operation with the tape and for displacing said carrier plate through a first displacement to a first operating position wherein the tape abuts said magnetic head means, second operating element means arranged for bringing said second drive means into operation with the tape and for displacing said carrier plate to a second operating position the latter constituting a portion of said first displacement to said first operating position, switch means for closing said motor circuit, said switch means being coupled with said carrier plate such that said switch means is closed when said carrier plate is displaced into said first and second second operating positions, respectively.
Claim 3
Dependent Claim
86 words
The tape playback device as set forth in claim 1, wherein said carrier plate is formed with an edge adjacent said operating element means, said operating element means are pivotally mounted and include driver means for abutting said edge of said carrier plate for displacing the latter upon pivotal actuation of said operating element means, said edge is formed with recesses adjacent said second operating element means, the latter constituting means for operatively coupling said motor means with said second drive means for the fast winding.
Claim 4
Dependent Claim
81 words
The tape playback device as set forth in claim 2, wherein said second operating element means constitutes a manually selectively actuatable fast forward selector pushbutton and a fast rewind selector pushbutton, and said first operating element means constitutes a manually selectively actuatable playback selector pushbutton, said driver means are integral portions of said operating element means, respectively, forming an L-shaped double armed lever therewith, said driver means for directly pushing said edge of said carrier plate when said pushbutton is actuated.
Claim 5
Dependent Claim
84 words
The tape playback device as set forth in claim 1, wherein said switch means includes a contact spring having thereon a first contact of said motor means, a pin mounted on said carrier plate, said contact spring abuts said pin, said switch means includes a second contact of said motor means disposed adjacent said first contact, said first and second contacts are spaced apart in an inoperative position of said carrier plate and contact each other in both said first and second operating positions.
Claim 6
Dependent Claim
138 words
The type playback device as set forth in claim 1, wherein said switch means for closing said motor circuit constitutes a sole operative switch for closing said circuit, said first and second operating element means both for displacing said carrier plate in said displacement path in a same first direction to both said first and second operating positions, respectively, said carrier plate having an inoperative position in an opposite direction from said first direction, said inoperative position of said carrier plate constitutes a different position of said carrier plate from said first and second operating positions, said switch means for being open so as to open circuit said motor circuit when said carrier plate is in said inoperative position, said second operating position is located between said first operating position and said inoperative position of said carrier plate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-26 | 1982-08-28 | 1983-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-26 | 1986-08-28 | 1987-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-26 | 1990-08-28 | 1991-02-27 | $7700.00 | Window Closed / Lapsed |