Patent US3360073A successfully refreshed from Google Patents.
US3360073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Loud speaker enclosure
Assignee: MUSI CLOUD Inc
•
Filing: 1966-08-08
•
Granted: 1967-12-26
•
Expires: 1986-08-08
Abstract
No abstract record available.
Inventors
- 👤 Edward J Murry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:30
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/20; H04R1/32; H04R1/34; H04R1/345
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
AN ENCLOSURE FOR A LOUD SPEAKER HAVING RELATIVELY HIGH AND LOW FREQUENCY SOUND COMPONENTS COMPRISING IN COMBINATION: A FRONT PLATE MEMBER GENERALLY TRIANGULAR IN SHAPE AND HAVING CONCAVE SIDES; A BACK PLATE MEMBER GENERALLY TRIANGULAR IN SHAPE AND HAVING STRAIGHT SIDES; DISPERSION CONE-HORN MEANS EXTENDING BETWEEN SAID FRONT AND BACK PLATE MEMBERS FOR PASSAGE OF RELATIVELY HIGHER FREQUENCY SOUND; THREE SOLID WEB MEMBERS EXTENDING FROM THE EXTERNAL WALL OF SAID DISPERSION CONE HORN MEANS BETWEEN THE SPACE BETWEEN SAID FRONT AND BACK PLATES TO DIVIDE SAID SPACE INTO THREE EQUAL PARTS SAID ENCLOSURE HAVING A BACK OPENING ADAPTED TO RECEIVE A DIAPHRAGM SPEAKER; AND VENT MEANS WHEREBY THE COMPRESSION OF AIR BEHIND SAID SPEAKER ENCLOSURE IS ADJUSTABLE SAID VENT MEANS COMPRISING TUBULAR MEMBERS CONTROLLING THE ESCAPE OF AIR FROM THE SPACE BEHIND SAID CLOSURE.
Claim 2
Dependent Claim
134 words
AN ENCLOSURE FOR A LOUD SPEAKER HAVING RELATIVELY HIGH AND LOW FREQUENCY SOUND COMPONENTS COMPRISING IN COMBINATION: A FRONT PLATE MEMBER GENERALLY TRIANGULAR IN SHAPE AND HAVING CONCAVE SIDES; A BACK PLATE MEMBER GENERALLY TRIANGULAR IN SHAPE AND HAVING STRAIGHT SIDES; DISPERSION CONE-HORN MEANS EXTENDING BETWEEN SAID FRONT AND BACK PLATE MEMBERS FOR PASSAGE OF RELATIVELY HIGHER FREQUENCY SOUND; THREE SOLID WEB MEMBERS EXTENDING FROM THE EXTERNAL WALL OF SAID DISPERSION CONE HORN MEANS BETWEEN THE SPACE BETWEEN SAID FRONT AND BACK PLATES TO DIVIDE SAID SPACE INTO THREE EQUAL PARTS SAID ENCLOSURE HAVING A BACK OPENING ADAPTED TO RECEIVE A DIAPHRAGM SPEAKER; AND VENT MEANS WHEREBY THE COMPRESSION OF AIR BEHIND SAID SPEAKER ENCLOSURE IS ADJUSTABLE SAID VENT MEANS COMPRISING TUBULAR MEMBERS CONTROLLING THE ESCAPE OF AIR FROM THE SPACE BEHIND SAID CLOSURE.
References Cited (Backward Citations)
FR791142A
Cited
US2214591A
Cited
US2167625A
Cited
US2206012A
Cited
US2757751A
Cited
US2955669A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |