Patent US3584878A successfully refreshed from Google Patents.
US3584878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape recorder controls
Assignee: Individual
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Filing: 1970-02-17
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Granted: 1971-06-15
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Expires: 1990-02-17
Abstract
Abstract A tape recorder having controls for aligning the magnetic head with preselected tracks of a tape. The head is carried by a support structure for movement transversely of the tape to locations aligned with different tracks thereof. A cam coacts with the supporting structure to locate the latter at different positions, and a ratchet coacts with the cam to displace the latter from one camming position to another camming position. A rock lever has at one end a pawl tooth coacting with the ratchet and at its other end a rotary friction component which is eccentrically mounted, and a continuously rotating drive shaft is adapted to coact with the friction component to act therethrough to swing the rock lever through an operating cycle. An electromagnetic releasable holding device coacts with the rock lever to hold the latter normally in a rest position while being actuated to release the rock lever for movement back and forth through a predetermined operating cycle.
Inventors
- 👤 Renato Seregni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:21
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/54; G11B5/55; G11B15/00; G11B15/02; G11B15/10; G11B15/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
299 words
In a tape recorder, a magnetic head, a support means supporting said head for movement transversely with respect to a moving tape into alignment with preselected tracks thereof, cam means coacting with said support means and having a series of camming portions respectively coacting with said support means for situating the latter and said head therewith at positions where said head is respectively in alignment with given tracks of a tape, cam-moving means coacting with said cam means for moving the latter to displace one camming portion out of engagement with said support means and another camming portion into engagement with said support means for changing the position of said head with respect to a tape, drive means operating continuously as long as the tape recorder is turned on, cyclically operating motion-transmitting means coacting with said drive means and cammoving means for operating through a cycle during which said motion-transmitting means transmits movement from said drive means to said cam-moving means for operating the latter sufficiently to displace one camming portion of said cam means out of engagement with said support means and another camming portion of said cam means into engagement with said support means, during one cycle of operation of said motion-transmitting means, releasable holding means releasably holding said motiontransmitting means out of operative engagement with said drive means until said holding means is released, for freeing said motion-transmitting means from movement into operative engagement with said drive means, said releasable holding means coacting with said motion-transmitting means for automatically retaining the latter out of engagement with said drive means after one operating cycle of said motion-transmitting means has been completed, and release means coacting with said releasable holding means for releasing the latter to bring about operation of said motion-transmitting means through one operating cycle thereof.
Claim 2
Dependent Claim
299 words
In a tape recorder, a magnetic head, a support means supporting said head for movement transversely with respect to a moving tape into alignment with preselected tracks thereof, cam means coacting with said support means and having a series of camming portions respectively coacting with said support means for situating the latter and said head therewith at positions where said head is respectively in alignment with given tracks of a tape, cam-moving means coacting with said cam means for moving the latter to displace one camming portion out of engagement with said support means and another camming portion into engagement with said support means for changing the position of said head with respect to a tape, drive means operating continuously as long as the tape recorder is turned on, cyclically operating motion-transmitting means coacting with said drive means and cammoving means for operating through a cycle during which said motion-transmitting means transmits movement from said drive means to said cam-moving means for operating the latter sufficiently to displace one camming portion of said cam means out of engagement with said support means and another camming portion of said cam means into engagement with said support means, during one cycle of operation of said motion-transmitting means, releasable holding means releasably holding said motiontransmitting means out of operative engagement with said drive means until said holding means is released, for freeing said motion-transmitting means from movement into operative engagement with said drive means, said releasable holding means coacting with said motion-transmitting means for automatically retaining the latter out of engagement with said drive means after one operating cycle of said motion-transmitting means has been completed, and release means coacting with said releasable holding means for releasing the latter to bring about operation of said motion-transmitting means through one operating cycle thereof.
Claim 3
Dependent Claim
13 words
The combination of claim 1 and wherein said release means is manually actuated.
Claim 4
Dependent Claim
39 words
The combination of claim 1 and wherein said release means includes a switch located in the path of movement of tracks of a tape to be automatically actuated thereby for bringing about a predetermined release of said holding means.
Claim 5
Dependent Claim
64 words
The combination of claim 1 and wherein a spring means coacts with said support means for urging a part of the latter into engagement with said cam means, said part of said support means acting as a cam follower, and said cam portions being in the form of steps of said cam means which successively become aligned with said part of said support means.
Claim 6
Dependent Claim
26 words
The combination of claim 4 and wherein said cam means is of a circular configuration and has an axis about which said steps are circumferentially distributed.
Claim 7
Dependent Claim
48 words
The combination of claim 5 and wherein said cam-moving means includes a ratchet wheel coaxially fixed with said cam means, said motion-traNsmitting means including a pawl coacting with said ratchet wheel for angularly displacing the latter through a given increment during an operating cycle of said motion-transmitting means.
Claim 8
Dependent Claim
68 words
The combination of claim 6 and wherein said drive means includes a rotary drive shaft, said motion-transmitting means including a rock lever carrying said pawl at one end thereof and carrying at its opposite end a friction component for frictionally engaging said shaft of said drive means to be driven thereby to rock said shaft for displacing said pawl sufficiently to turn said ratchet wheel through said increment.
Claim 9
Dependent Claim
34 words
The combination of claim 7 and wherein said friction component is a rotary friction wheel eccentrically carried by said rock lever for rocking the latter as said wheel turns while frictionally engaging said shaft.
Claim 10
Dependent Claim
65 words
The combination of claim 8 and wherein said releasable holding means is formed by an armature and electromagnet, said armature normally holding said rock lever at a position where said friction component is spaced from said drive shaft and said electromagnet when energized displacing said armature to a position releasing said rock shaft for movement to a location where said friction component engages said shaft.
Claim 11
Dependent Claim
56 words
The combination of claim 9 and wherein said friction component has a hub provided with a flat face and said rock lever carries a spring coacting with said flat face of said hub for snapping said friction component at the end of an operating cycle to a location where it is displaced away from said shaft.
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) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |