US3638753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Barrel speaker enclosure
Assignee: Individual
•
Filing: 1970-08-31
•
Granted: 1972-02-01
•
Expires: 1990-08-31
Abstract
Abstract A speaker enclosure having a barrel-shaped drum with an open front end and an open rear end. The speaker is axially mounted across the open front of the drum and an aerodynamically curved, dome-shaped reflector is mounted to surround the rear portion of the drum and is spaced therefrom. The open end of the reflector is thus aligned to direct sound emitted from it in a substantially forward axial direction.
Inventors
- 👤 Paul E Cunningham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:20
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/20; H04R1/32; H04R1/34; H04R1/345; H04R1/02; H04R1/028
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
196 words
A speaker and associated enclosure apparatus for reproducing sound from electronic audio signals, the apparatus comprising: a. a barrel-shaped drum having two open circular ends, one end in a selected position being a front end and the opposite end being a rear end and being substantially parallel with and substantially equal in size to the front end, intermediate portions of the drum being circular in cross section and having greater diameters than the ends, the axial length of the drum being substantially longer than any diameter thereof; b. a substantially axially aligned speaker mounted at the front end of the drum for directing the sound in opposite substantially axial directions; and c. an aerodynamically curved reflector having an open front end, and a closed rear end, the reflector mounted to surround the rear portion of said drum and spaced therefrom so that the sides thereof are substantially parallel with the adjacent sides of the drum and so that the reflector extends from the rear of said drum forward more than half way the length of said drum, the open end of the reflector being aligned to direct sound emitted therefrom in a substantially forward axial direction.
Claim 2
Dependent Claim
196 words
A speaker and associated enclosure apparatus for reproducing sound from electronic audio signals, the apparatus comprising: a. a barrel-shaped drum having two open circular ends, one end in a selected position being a front end and the opposite end being a rear end and being substantially parallel with and substantially equal in size to the front end, intermediate portions of the drum being circular in cross section and having greater diameters than the ends, the axial length of the drum being substantially longer than any diameter thereof; b. a substantially axially aligned speaker mounted at the front end of the drum for directing the sound in opposite substantially axial directions; and c. an aerodynamically curved reflector having an open front end, and a closed rear end, the reflector mounted to surround the rear portion of said drum and spaced therefrom so that the sides thereof are substantially parallel with the adjacent sides of the drum and so that the reflector extends from the rear of said drum forward more than half way the length of said drum, the open end of the reflector being aligned to direct sound emitted therefrom in a substantially forward axial direction.
Claim 3
Dependent Claim
19 words
An apparatus according to claim 1, wherein the speaker extends entirely across the open front end of the drum.
Claim 4
Dependent Claim
46 words
An apparatus according to claim 1, wherein the closed end of the reflector is formed with an inwardly, forwardly directed aerodynamically curved peak which is coaxially aligned with said drum and which is mounted to and secured by a bolt to the rear of said drum.
Claim 5
Dependent Claim
33 words
An apparatus according to claim 1, wherein the drum and the reflector are circularly, symmetrical about their axes, and coaxially mounted, and the drum radius is approximately 80 percent of the reflector radius.
Claim 6
Dependent Claim
40 words
An apparatus according to claim 4, wherein the speaker extends entirely across the open front end of the drum and the closed end of the reflector is formed with an inwardly directed peak which is coaxially aligned with said drum.
References Cited (Backward Citations)
US2949163A
Cited
US3065817A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |