US5448647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric apparatus having speaker
Assignee: Sony Corp
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Filing: 1993-09-10
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Granted: 1995-09-05
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Expires: 2013-09-10
Abstract
Abstract A speaker system comprising a speaker housing detachable from the body of the television receiver, the detachable speaker housing having first and second sides; a low frequency component speaker disposed in a lower portion of the first side of the detachable speaker housing; and, two high frequency component speakers, wherein a first of the two high frequency component speakers is disposed in an upper portion of the first side of the detachable speaker housing and a second of the two high frequency component speakers is disposed in a lower portion of the second side of the detachable speaker housing.
Inventors
- 👤 Hiroshi Koizumi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:48
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/20; H04R1/22; H04R1/28; H04R1/2807; H04R1/2815; H04R1/2823; H04R1/2826; H04N; H04N5/00; H04N5/64; H04N5/642; H04R5/00; H04R5/02; H04R1/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
165 words
A speaker system for a television receiver, comprising: a speaker housing detachable from the body of said television receiver, said detachable speaker housing having a first side and a second side, wherein said second side defines an opening in an upper portion therein; a low frequency component speaker disposed in a lower portion of said first side of said detachable speaker housing, said low frequency component speaker having a rear wall; two high frequency component speakers, wherein a first of said two high frequency component speakers is disposed in an upper portion of said first side of said detachable speaker housing and a second of said two high frequency component speakers is disposed in a lower portion of said second side of said detachable speaker housing; and, a duct connected to said opening and projecting radially inward from said detachable speaker housing, wherein a phase of sound output from said rear wall of said low frequency component speaker is inverted and radiated from said opening.
Claim 2
Dependent Claim
165 words
A speaker system for a television receiver, comprising: a speaker housing detachable from the body of said television receiver, said detachable speaker housing having a first side and a second side, wherein said second side defines an opening in an upper portion therein; a low frequency component speaker disposed in a lower portion of said first side of said detachable speaker housing, said low frequency component speaker having a rear wall; two high frequency component speakers, wherein a first of said two high frequency component speakers is disposed in an upper portion of said first side of said detachable speaker housing and a second of said two high frequency component speakers is disposed in a lower portion of said second side of said detachable speaker housing; and, a duct connected to said opening and projecting radially inward from said detachable speaker housing, wherein a phase of sound output from said rear wall of said low frequency component speaker is inverted and radiated from said opening.
Claim 3
Dependent Claim
29 words
The speaker system of claim 1, wherein the diameter of said opening is substantially equal to the diameter of said high frequency component speaker disposed on said second side.
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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) | 1998-09-04 | 1999-03-06 | 1999-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-09-04 | 2003-03-06 | 2003-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-09-04 | 2007-03-06 | 2007-09-05 | $7700.00 | Window Closed / Lapsed |