US3601409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Head arrangement for stereo tape players
Assignee: Individual
•
Filing: 1967-12-01
•
Granted: 1971-08-24
•
Expires: 1987-12-01
Abstract
Abstract A head arrangement for a stereo tape player comprises a vertically movable support plate having an erasing head and a recording and playback head mounted thereon. A stationary guide is arranged between the heads to maintain a four or eight track stereo tape in its proper position during movement past the heads.
Inventors
- 👤 Ralph D Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:15
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
171 words
An erasing and recording head arrangement in a cartridge-type stereo tape player comprising a plate having first and second arms arranged to extend forwardly thereof, horizontally disposed pivot pin means stationarily mounted in said player and operatively connected to said plate for permitting vertical movements of said plate and arms and for preventing vibration thereof, an erasing head means immovably attached to a forward end of said first arm, a recording and playback head means immovably attached to a forward end of said second arm, and tape guide means stationarily mounted in said player and arranged between and in substantial linear alignment with said erasing head means and said recording and playback head means for limiting vertical and lateral movements of a stereo tape and to aid in maintaining proper tape tension, said erasing head means and said recording and playback head means substantially arranged to lie in the same horizontally disposed plane whereby a stereo tape may engage said erasing head means and said recording and playback head means simultaneously.
Claim 2
Dependent Claim
171 words
An erasing and recording head arrangement in a cartridge-type stereo tape player comprising a plate having first and second arms arranged to extend forwardly thereof, horizontally disposed pivot pin means stationarily mounted in said player and operatively connected to said plate for permitting vertical movements of said plate and arms and for preventing vibration thereof, an erasing head means immovably attached to a forward end of said first arm, a recording and playback head means immovably attached to a forward end of said second arm, and tape guide means stationarily mounted in said player and arranged between and in substantial linear alignment with said erasing head means and said recording and playback head means for limiting vertical and lateral movements of a stereo tape and to aid in maintaining proper tape tension, said erasing head means and said recording and playback head means substantially arranged to lie in the same horizontally disposed plane whereby a stereo tape may engage said erasing head means and said recording and playback head means simultaneously.
Claim 3
Dependent Claim
45 words
The invention of claim 1 wherein said guide means is arranged at a distance from said recording and playback head means which is from 20 percent to 45 percent of the total distance between said erasing head means and said recording and playback head means.
Claim 4
Dependent Claim
31 words
The invention of claim 1 wherein said tape guide means comprises means forming a notch therein, said notch arranged in substantial alignment with said erasing and recording and playback head means.
Claim 5
Dependent Claim
64 words
The invention of claim 1 further comprising a stereo tape cartridge arranged adjacent to said two head means and further arranged to substantially lie in said horizontally disposed plane, said cartridge comprising a spool rotatably mounted in said cartridge and an endless stereo tape having at least one pair of tracks formed thereon, said stereo tape arranged to engage said two head means simultaneously.
Claim 6
Dependent Claim
69 words
The invention of claim 1 further comprising a multifaced cam means mounted for rotation vertically below said plate, screw means adjustably mounted in said plate and arranged to engage said cam means for selectively positioning said plate vertically upon rotation of said cam means and spring means stationarily mounted in said player and operatively connected to said plate to urge said screw means into engagement with said cam means.
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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) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |