US4225010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Loudspeaker system
Assignee: Individual
•
Filing: 1979-04-18
•
Granted: 1980-09-30
•
Expires: 1999-04-18
Abstract
Abstract A loudspeaker system embodies an enclosure defining a sound chamber having a front wall with a sound emitting opening therein. An outwardly and forwardly flaring speaker cone is mounted within the enclosure and adjacent the opening therein with the innermost portion of the speaker cone emitting more distorted sound than the outermost portion thereof. At least one reflector is mounted outwardly of the enclosure and forwardly of an outer portion of the speaker cone with the innermost edge of the reflector being located at least 15 per cent of the radial distance measured outwardly from the outer edge of the loudspeaker voice coil to the outer edge of the cone diaphragm with the sound being reflected by the reflector being directed outwardly of the enclosure at least 90° from a line extending forwardly along the axis of the loudspeaker cone.
Inventors
- 👤 Lloyd B. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:18
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/20; H04R1/32; H04R1/34; H04R1/345
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
193 words
A loudspeaker system comprising: (a) an enclosure defining a sound chamber having a front wall with a sound emitting opening therein, (b) an outwardly and forwardly flaring loudspeaker cone mounted within said enclosure adjacent said sound emitting opening with the innermost portion of said loudspeaker cone emitting the most distorted sound and the outermost portion emitting the least distorted sound, and (c) at least one reflector mounted outwardly of said enclosure and forwardly of an outer portion of the loudspeaker cone with the outermost edge of said reflector being located outwardly of and beyond the outer edge of the cone diaphragm and outwardly of and beyond said enclosure as measured outwardly in a radial direction from a line extending forwardly along the axis of said loudspeaker cone with the innermost edge of said reflector being located at least 15 percent of the radial distance measured outwardly from the outer edge of the loudspeaker voice coil to the outer edge of the cone diaphragm and with the sound being reflected by said reflector being directed outwardly of said enclosure at least 90° from a line extending forwardly along the axis of the loudspeaker cone.
Claim 2
Dependent Claim
193 words
A loudspeaker system comprising: (a) an enclosure defining a sound chamber having a front wall with a sound emitting opening therein, (b) an outwardly and forwardly flaring loudspeaker cone mounted within said enclosure adjacent said sound emitting opening with the innermost portion of said loudspeaker cone emitting the most distorted sound and the outermost portion emitting the least distorted sound, and (c) at least one reflector mounted outwardly of said enclosure and forwardly of an outer portion of the loudspeaker cone with the outermost edge of said reflector being located outwardly of and beyond the outer edge of the cone diaphragm and outwardly of and beyond said enclosure as measured outwardly in a radial direction from a line extending forwardly along the axis of said loudspeaker cone with the innermost edge of said reflector being located at least 15 percent of the radial distance measured outwardly from the outer edge of the loudspeaker voice coil to the outer edge of the cone diaphragm and with the sound being reflected by said reflector being directed outwardly of said enclosure at least 90° from a line extending forwardly along the axis of the loudspeaker cone.
Claim 3
Dependent Claim
48 words
A loudspeaker system as defined in claim 1 in which said innermost edge of said reflector is located at from 15 percent to 85 percent of the radial distance measured outwardly from the outer edge of the loudspeaker voice coil to the outer edge of the cone diaphragm.
Claim 4
Dependent Claim
30 words
A loudspeaker system as defined in claim 1 in which said reflector has a textured surface to roll-off the higher frequencies emitted from said outer portion of said speaker cone.
Claim 5
Dependent Claim
36 words
A loudspeaker system as defined in claim 1 in which a dampening member is mounted forwardly of said central portion of said loudspeaker cone to dampen sound emitted from said central portion of said speaker cone.
Claim 6
Dependent Claim
29 words
A loudspeaker system as defined in claim 1 in which a plurality of reflectors are mounted at angularly spaced locations forwardly of said outer portion of said speaker cone.
Claim 7
Dependent Claim
22 words
A loudspeaker system as defined in claim 1 in which said reflector is generally concave in shape as viewed in cross section.
Claim 8
Dependent Claim
22 words
A loudspeaker system as defined in claim 1 in which said reflector is generally parabolic in shape as viewed in cross section.
Claim 9
Dependent Claim
18 words
A loudspeaker system as defined in claim 1 in which said reflector is of a generally torus shape.
References Cited (Backward Citations)
GB342369A
Cited
US2171940A
Cited
US2750245A
Cited
US2915134A
Cited
US3540544A
Cited
US3818138A
Cited
US3912866A
Cited
US3964571A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-30 | 1984-03-31 | 1984-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-30 | 1988-03-31 | 1988-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-30 | 1992-03-31 | 1992-09-30 | $7700.00 | Window Closed / Lapsed |