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US3578103A Expired / Lapsed US ⏱️ 0.0 years remaining

Speaker enclosure

Assignee: Individual
•
Filing: 1969-06-04
•
Granted: 1971-05-11
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Expires: 1989-06-04
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Abstract

Abstract An enclosure for a cone-type loudspeaker and having a mounting wall apertured to receive the speaker with the cone portion extending rearwardly therefrom, and a reflecting wall surface angled rearwardly from one edge of the mounting wall to traverse the space in the rear of the speaker cone and form with the opposite edge of the mounting wall a relatively large opening; the relative angular disposition between the mounting wall and the reflecting wall surface being such that sound vibrations emitted rearwardly from the speaker cone are reflected by the reflecting wall surface to pass freely through the opening in noninterfering relation to the sound vibrations emanating from the front of the speaker, as for example, at about 90* to the axis of the speaker cone.

Inventors

  • 👤 John B Lennes

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 23:39
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/20; H04R1/22; H04R1/28; H04R1/2869; H04R1/2884; H04R1/2888; H04R1/24; H04R1/26

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 156 words
A loudspeaker enclosure comprising a mounting wall which is apertured to receive the sPeaker with the speaker cone extending inwardly therefrom and with the axis of the cone being substantially perpendicular to said mounting wall, the aperture being substantially acoustically unobstructed so that sound vibrations emanating from the front of the cone pass through the aperture perpendicular to said axis, and a reflecting wall surface angled inwardly from adjacent one edge of the mounting wall at an angle of about 45* with respect to said mounting wall and said axis and traversing the space behind the speaker cone, said reflecting wall providing with the opposite edge of the mounting wall a relatively large and substantially acoustically unobstructed opening through which sound vibrations emitted rearwardly from the speaker and reflected through an angle of 90* by said reflecting wall surface pass freely in perpendicular noninterfering relation to the sound vibrations emanating from the front of the speaker.
Claim 2
Dependent Claim 156 words
A loudspeaker enclosure comprising a mounting wall which is apertured to receive the sPeaker with the speaker cone extending inwardly therefrom and with the axis of the cone being substantially perpendicular to said mounting wall, the aperture being substantially acoustically unobstructed so that sound vibrations emanating from the front of the cone pass through the aperture perpendicular to said axis, and a reflecting wall surface angled inwardly from adjacent one edge of the mounting wall at an angle of about 45* with respect to said mounting wall and said axis and traversing the space behind the speaker cone, said reflecting wall providing with the opposite edge of the mounting wall a relatively large and substantially acoustically unobstructed opening through which sound vibrations emitted rearwardly from the speaker and reflected through an angle of 90* by said reflecting wall surface pass freely in perpendicular noninterfering relation to the sound vibrations emanating from the front of the speaker.
Claim 3
Dependent Claim 18 words
A loudspeaker enclosure as set forth in claim 1, wherein the enclosure is in substantially symmetrical triangular form.
Claim 4
Dependent Claim 16 words
A loudspeaker enclosure as set forth in claim 1, wherein the reflecting wall surface is imperforate.
Claim 5
Dependent Claim 31 words
A loudspeaker enclosure as set forth in claim 1, wherein the reflecting wall surface is of sandwich form including spaced inner and outer panels and a filler in the space therebetween.
Claim 6
Dependent Claim 19 words
A loudspeaker enclosure as set forth in claim 4, wherein the filler is sand sandwiched between the said panels.
Claim 7
Dependent Claim 30 words
Right- and left-hand loudspeaker enclosures, each as claimed in claim 1, disposed in spaced relationship with open ends of the enclosures opening laterally outwardly and with the speakers facing forwardly.
Claim 8
Dependent Claim 31 words
Right- and left-hand loudspeaker enclosures, each as claimed in claim 1, disposed in spaced relationship with the open ends of the enclosures opening forwardly and with the speakers facing laterally outwardly.
Claim 9
Dependent Claim 33 words
Right- and left-hand loudspeaker enclosures, each as claimed in claim 1, disposed in spaced relationship with the open ends of the enclosures generally forwardly and with the speakers facing generally toward one another.
Claim 10
Dependent Claim 203 words
A loudspeaker system comprising an enclosure having a mounting wall with an aperture for exposure to a listening area, and a speaker secured to said mounting wall and having a vibratory cone across said aperture, said cone having its central axis substantially perpendicular to said wall and with one end of the cone lying within said enclosure, said enclosure including a sound-reflecting wall that is presented to said one end of the cone and is intersected by said central axis at an acute angle, means joining said sound-reflecting wall to said mounting wall remote from the periphery of said aperture, means forming in said enclosure a relatively large and acoustically unobstructed opening for exposure to said listening area, means for otherwise substantially acoustically closing said enclosure, the excursion of the cone along said axis emitting sound waves unobstructedly through said aperture and also unobstructedly toward said reflecting wall for subsequent reflection through said opening, the sound waves passing through said aperture and the sound waves passing through said opening being substantially at 90* angles with respect to each other and characterized as being in noninterfering relation with each other, and said enclosure being further characterized as permitting substantially free-vibrating motion of the cone.
Claim 11
Dependent Claim 203 words
A loudspeaker system comprising an enclosure having a mounting wall with an aperture for exposure to a listening area, and a speaker secured to said mounting wall and having a vibratory cone across said aperture, said cone having its central axis substantially perpendicular to said wall and with one end of the cone lying within said enclosure, said enclosure including a sound-reflecting wall that is presented to said one end of the cone and is intersected by said central axis at an acute angle, means joining said sound-reflecting wall to said mounting wall remote from the periphery of said aperture, means forming in said enclosure a relatively large and acoustically unobstructed opening for exposure to said listening area, means for otherwise substantially acoustically closing said enclosure, the excursion of the cone along said axis emitting sound waves unobstructedly through said aperture and also unobstructedly toward said reflecting wall for subsequent reflection through said opening, the sound waves passing through said aperture and the sound waves passing through said opening being substantially at 90* angles with respect to each other and characterized as being in noninterfering relation with each other, and said enclosure being further characterized as permitting substantially free-vibrating motion of the cone.

References Cited (Backward Citations)

US1866831A Cited
GB506042A Cited
FR929692A Cited
US3080012A Cited
GB890886A Cited
US3136383A Cited
US3327044A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-05-10 1974-11-09 1975-05-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-05-10 1978-11-09 1979-05-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-05-10 1982-11-09 1983-05-11 $7700.00 Window Closed / Lapsed

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