Patent US3131783A successfully refreshed from Google Patents.
US3131783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Loud-speaker enclosure
Assignee: Individual
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Filing: 1960-11-04
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Granted: 1964-05-05
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Expires: 1980-11-04
Abstract
No abstract record available.
Inventors
- 👤 Santos J Mares
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:36
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/20; H04R1/22; H04R1/28; H04R1/2807; H04R1/2853; H04R1/2857; H04R1/32; H04R1/323
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
258 words
A LOUDSPEAKER ENCLOSURE PARTICULARLY ADAPTED TO CREATE BINAURAL AUDIO REPRODUCTION COMPRISING: ENCLOSURE BOX MEANS FORMING A PAIR OF COMPLEMENTARY SEALED CHAMBERS; EACH SAID CHAMBER HAVING A FIRST VERTICAL SIDE WALL RELATIVELY MOUNTED IN A SUBSTANTIALLY 90* RELATIONSHIP TO THE FIRST SIDE WALL OF THE OTHER CHAMBER; EACH SAID FIRST SIDE WALL FORMING A LOUDSPEAKER RECEIVING APERTURE OF COMPLEMENTARY SIZE TO ALLOW A LOUDSPEAKER TO BE MOUNTED WITHIN THE CHAMBER OVER THE APERTURE; A VERTICAL DEFLECTOR PLATE EXTENDING OUTWARD AT A REARWARD ANGLE FROM SAID FIRST SIDE WALL TO COVER LESS THAN ALL OF THE SPEAKER APERTURE; AN AIR OUTLET PORT FORMED BY EACH SAID FIRST SIDE WALL SPACED FROM SAID LOUDSPEAKER RECEIVING APERTURE; PARTITION MEANS DIVIDING EACH SAID CHAMBER INTO A COMPRESSION AREA IMMEDIATELY ADJACENT THE LOUDSPEAKER RECEIVING APERTURE; A FIRST RECTANGULAR HORN AREA, AND A SECOND RECTANGULAR HORN AREA; SAID PARTITION MEANS BEING ANGULARLY DISPOSED TO PROVIDE A WIDER AREA AT THE SECOND END OF EACH HORN AREA THAN AT THE FIRST END OF EACH HORN AREA; A PASSAGEWAY FORMED BY SAID PARTITION MEANS TO FORM AN AIR COMMUNICATION PORT BETWEEN SAID COMPRESSION AREA AND THE FIRST END OF SAID FIRST HORN AREA; AND A SECOND PASSAGEWAY FORMED BY SAID PARTITION MEANS FORMING AN AIR COMMUNICATION PORT BETWEEN SAID FIRST AND SECOND HORN AREAS LOCATED ADJACENT THE SECOND END OF SAID FIRST HORN AREA AND THE FIRST END OF SAID SECOND HORN AREA; SAID AIR OUTLET PORT FORMED BY SAID FIRST SIDE WALLS BEING LOCATED ADJACENT AND OPENING INTO THE SECOND END OF SAID SECOND HORN AREA.
Claim 2
Dependent Claim
258 words
A LOUDSPEAKER ENCLOSURE PARTICULARLY ADAPTED TO CREATE BINAURAL AUDIO REPRODUCTION COMPRISING: ENCLOSURE BOX MEANS FORMING A PAIR OF COMPLEMENTARY SEALED CHAMBERS; EACH SAID CHAMBER HAVING A FIRST VERTICAL SIDE WALL RELATIVELY MOUNTED IN A SUBSTANTIALLY 90* RELATIONSHIP TO THE FIRST SIDE WALL OF THE OTHER CHAMBER; EACH SAID FIRST SIDE WALL FORMING A LOUDSPEAKER RECEIVING APERTURE OF COMPLEMENTARY SIZE TO ALLOW A LOUDSPEAKER TO BE MOUNTED WITHIN THE CHAMBER OVER THE APERTURE; A VERTICAL DEFLECTOR PLATE EXTENDING OUTWARD AT A REARWARD ANGLE FROM SAID FIRST SIDE WALL TO COVER LESS THAN ALL OF THE SPEAKER APERTURE; AN AIR OUTLET PORT FORMED BY EACH SAID FIRST SIDE WALL SPACED FROM SAID LOUDSPEAKER RECEIVING APERTURE; PARTITION MEANS DIVIDING EACH SAID CHAMBER INTO A COMPRESSION AREA IMMEDIATELY ADJACENT THE LOUDSPEAKER RECEIVING APERTURE; A FIRST RECTANGULAR HORN AREA, AND A SECOND RECTANGULAR HORN AREA; SAID PARTITION MEANS BEING ANGULARLY DISPOSED TO PROVIDE A WIDER AREA AT THE SECOND END OF EACH HORN AREA THAN AT THE FIRST END OF EACH HORN AREA; A PASSAGEWAY FORMED BY SAID PARTITION MEANS TO FORM AN AIR COMMUNICATION PORT BETWEEN SAID COMPRESSION AREA AND THE FIRST END OF SAID FIRST HORN AREA; AND A SECOND PASSAGEWAY FORMED BY SAID PARTITION MEANS FORMING AN AIR COMMUNICATION PORT BETWEEN SAID FIRST AND SECOND HORN AREAS LOCATED ADJACENT THE SECOND END OF SAID FIRST HORN AREA AND THE FIRST END OF SAID SECOND HORN AREA; SAID AIR OUTLET PORT FORMED BY SAID FIRST SIDE WALLS BEING LOCATED ADJACENT AND OPENING INTO THE SECOND END OF SAID SECOND HORN AREA.
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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) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |