Patent US4646349A successfully refreshed from Google Patents.
US4646349A
Expired / Lapsed
US
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Equipment for the stereophonic sound reproduction in a television receiver
Assignee: Nokia Deutschland GmbH
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Filing: 1985-02-11
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Granted: 1987-02-24
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Expires: 2005-02-11
Abstract
Abstract In the novel equipment for the stereophonic sound reproduction in the television receiver all essential components, such as loudspeakers, crossover networks, etc., are accommodated in one single enclosure which fits into the space above the picture tube, in which it is mounted.
Inventors
- 👤 Bernhard Puls
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:23
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/64; H04N5/642
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
78 words
A stereophonic sound reproduction system for use in a television receiver, said television receiver comprising a cabinet containing a picture tube having an arcuate portion, said system comprising: at least a loudspeaker for reproducing a low frequency band; a crossover network connected to said loudspeaker; a unitary, elongated enclosure containing said loudspeaker and said crossover network, said enclosure formed so that when installed in said cabinet, it straddles and conforms to said arcuate portion of said picture tube.
Claim 2
Dependent Claim
78 words
A stereophonic sound reproduction system for use in a television receiver, said television receiver comprising a cabinet containing a picture tube having an arcuate portion, said system comprising: at least a loudspeaker for reproducing a low frequency band; a crossover network connected to said loudspeaker; a unitary, elongated enclosure containing said loudspeaker and said crossover network, said enclosure formed so that when installed in said cabinet, it straddles and conforms to said arcuate portion of said picture tube.
Claim 3
Dependent Claim
18 words
A system as claimed in claim 1, further comprising means dividing said enclosure in to two equal volumes.
Claim 4
Dependent Claim
50 words
A system as claimed in claim 1, further comprising a partition wall dividing said enclosure into two unequal volumes, said wall having mounted therein at least one woofer chassis, and at least one of said unequal volumes is connected to ambient atmosphere via a port opening and a duct tube.
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Cited
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Cited
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Cited
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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) | 1990-02-23 | 1990-08-25 | 1991-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-23 | 1994-08-25 | 1995-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-23 | 1998-08-25 | 1999-02-24 | $7700.00 | Window Closed / Lapsed |