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US4033431A Expired / Lapsed US ⏱️ 0.0 years remaining

Acoustic crossover speaker enclosure

Assignee: Individual
•
Filing: 1975-11-19
•
Granted: 1977-07-05
•
Expires: 1995-11-19
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Abstract

Abstract An acoustic crossover speaker enclosure comprising a multi-sided box having an apertured baffle supporting a horn which in conjunction with the interior of the box defines an air chamber. The horn is supported in an upright position such that the throat of the horn opens at the baffle end of the box where the front end of a driver projects into the horn throat, while the back side of the driver projects into the air chamber of the box. The horn opens at the top end of the box wherein sound waves emitted from the mouth of the horn are laterally reflected by means of a sound deflector panel. The air chamber transmits sound from the rearward side of the driver to a bass reflex port in one wall of the box such that a sound radiated from the rear of the driver may be added to the sound emitted from the front of the driver.

Inventors

  • 👤 James G. Ebejer

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 17:31
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/20; H04R1/22; H04R1/30; G; G10; G10K; G10K11/00; G10K11/18; G10K11/26; G10K11/28

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 272 words
A speaker enclosure comprising: an enclosed cabinet disposed in an upright position having an opening at the top end; a horn disposed in an upright position within said cabinet, said horn having a throat opening at the near bottom end of said cabinet, said horn having a mouth opening through said top end of said cabinet, the exterior walls of said horn and the interior wall of said cabinet defining an annular air chamber extending 360 degrees around said horn exterior walls and substantially along the full length of said horn between said throat, and means mounting said horn in said cabinet to define said 360 degree annular air chamber; and a driver carried at the throat end of said horn such that the front of said driver projects therein for radiating compression waves therein, the back side of said driver projecting compression waves into said annular air chamber, said cabinet having a back wall with a port extending therethrough, said air chamber communicating the sound waves radiated from the rearward side of said driver to said port; a deflection panel carried at the top end of said cabinet adjacent the mouth of said horn such that sound waves emitted from the mouth of said horn are laterally deflected by said deflection panel for deflecting the sound from the front of said cabinet into the listening area, whereby the energy emitted in a rearward direction by said driver is communicated via said air chamber to said port to add said rearwardly emitted radiation of said driver to the radiation emitted from the front of said driver which is directed through said horn.
Claim 2
Dependent Claim 272 words
A speaker enclosure comprising: an enclosed cabinet disposed in an upright position having an opening at the top end; a horn disposed in an upright position within said cabinet, said horn having a throat opening at the near bottom end of said cabinet, said horn having a mouth opening through said top end of said cabinet, the exterior walls of said horn and the interior wall of said cabinet defining an annular air chamber extending 360 degrees around said horn exterior walls and substantially along the full length of said horn between said throat, and means mounting said horn in said cabinet to define said 360 degree annular air chamber; and a driver carried at the throat end of said horn such that the front of said driver projects therein for radiating compression waves therein, the back side of said driver projecting compression waves into said annular air chamber, said cabinet having a back wall with a port extending therethrough, said air chamber communicating the sound waves radiated from the rearward side of said driver to said port; a deflection panel carried at the top end of said cabinet adjacent the mouth of said horn such that sound waves emitted from the mouth of said horn are laterally deflected by said deflection panel for deflecting the sound from the front of said cabinet into the listening area, whereby the energy emitted in a rearward direction by said driver is communicated via said air chamber to said port to add said rearwardly emitted radiation of said driver to the radiation emitted from the front of said driver which is directed through said horn.
Claim 3
Dependent Claim 29 words
The speaker enclosure defined in claim 1 wherein said horn has a plurality of side walls, a selected number of which are tapered from said mouth to said throat.

References Cited (Backward Citations)

US1689009A Cited
US2205804A Cited
US2390834A Cited
US2815087A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-07-04 1981-01-03 1981-07-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-07-04 1985-01-03 1985-07-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-07-04 1989-01-03 1989-07-05 $7700.00 Window Closed / Lapsed

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