Patent US4616731A successfully refreshed from Google Patents.
US4616731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speaker system
Assignee: Individual
•
Filing: 1984-03-02
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Granted: 1986-10-14
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Expires: 2004-03-02
Abstract
Abstract An improved speaker system includes an open tube arrangement operated in conjunction with one or more closed tube components. The system includes a speaker having a frontal side which is positioned proximate an inlet end of an open primary tube. The tube may be provided with a plurality of apertures therethrough along the length thereof for the creation of even harmonic overtones. These apertures may be equally or unequally spaced as desired. Slits are provided at opposite ends of the primary tube and first and second additional tubes each close at one end surround opposite ends of the primary tube including the intensify base notes and enhance the fundamental wave lengths and odd harmonic overtones.
Inventors
- 👤 James R. Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:49
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/20; H04R1/22; H04R1/28; H04R1/2807; H04R1/2853; H04R1/2857
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
69 words
An improved speaker assembly, comprising: a speaker having a frontal side; a tube having one open inlet portion and at least one open outlet portion; first means proximate said speaker for permitting the passage of air into said tube; and second means coupled to said speaker and to said tube for positioning said inlet portion adjacent the frontal side of said speaker so as to receive sound waves therefrom.
Claim 2
Dependent Claim
69 words
An improved speaker assembly, comprising: a speaker having a frontal side; a tube having one open inlet portion and at least one open outlet portion; first means proximate said speaker for permitting the passage of air into said tube; and second means coupled to said speaker and to said tube for positioning said inlet portion adjacent the frontal side of said speaker so as to receive sound waves therefrom.
Claim 3
Dependent Claim
24 words
An improved speaker system according to claim 1 wherein said means comprises an aperture in said inlet portion of said tube proximate said speaker.
Claim 4
Dependent Claim
18 words
An improved speaker assembly according to claim 1 wherein said aperture is in the form of a slit.
Claim 5
Dependent Claim
28 words
An improved speaker assembly according to claim 3 wherein said first means includes at least one additional aperture in the inlet portion of said tube proximate said speaker.
Claim 6
Dependent Claim
27 words
An improved speaker assembly according to claim 1 wherein said means comprises a space between the frontal side of said speaker and the opening of inlet portion.
Claim 7
Dependent Claim
26 words
An improved speaker assembly according to claim 1 further comprising a plurality of apertures in said tube along the length thereof for producing even harmonic overtones.
Claim 8
Dependent Claim
22 words
An improved speaker assembly according to claim 6 wherein said plurality of apertures are equally spaced along the length of said tube.
Claim 9
Dependent Claim
22 words
An improved speaker assembly according to claim 6 wherein said plurality of apertures are unequally spaced along the length of said tube.
Claim 10
Dependent Claim
43 words
An improved speaker assembly according to claim 6 further comprising a second tube surrounding the inlet portion of said first tube and the slot therein, said second tube having a closed end proximate said speaker and an open end remote from said speaker.
Claim 11
Dependent Claim
51 words
An improved speaker assembly according to claim 9 further comprising: an additional aperture in the outlet end of said tube; and a third tube surrounding said outlet portion and said additional aperture, said third tube having a closed end remote from said speaker and an open end closer to said speaker.
Claim 12
Dependent Claim
52 words
An improved speaker assembly according to claim 1 wherein said tube has first and second outlet portions extending from a single inlet portion, said first and second outlet portion have a first and second outlets respectively, said first and second outlets, facing in a direction opposite the frontal side of said speaker.
Claim 13
Dependent Claim
32 words
An improved speaker assembly according to claim 11 further comprising first and second telescoping pipe members slidingly coupled on said first and second outlet portions so as to vary the length thereof.
Claim 14
Dependent Claim
38 words
An improved speaker assembly according to claim 6 wherein the interior of said tube is provided with the plurality of baffle each located adjacent one of said apertures so as to divert and guide sound through said apertures.
Claim 15
Dependent Claim
28 words
An improved speaker assembly according to claim 13 wherein said tube has a first inlet portion and first and second outlet portions having first and second outlets respectively.
Claim 16
Dependent Claim
26 words
An improved speaker assembly according to claim 14 wherein said first outlet portion has a plurality of apertures therein for the generation of even harmonic overtones.
Claim 17
Dependent Claim
87 words
An improved speaker assembly according to claim 15 further comprising: first and second apertures inset second outlet portions, said first aperture being proximate said inlet portion and second aperture remote from said inlet portion; a second tube surrounding a portion of said second outlet portion including said first aperture, said second tube having a first closed end proximate said inlet portion; and a second tube surrounding a portion of said second outlet portion including said second aperture and having a closed end remote from said inlet portion.
Claim 18
Dependent Claim
76 words
An improved speaker assembly, comprising: a speaker having a frontal side; a tube having one open inlet portion and at least one open outlet portion; first means coupled to said speaker and to said tube for positioning said inlet portion adjacent the frontal side of said speaker so as to receive sound waves therefrom; and an aperture in said inlet portion of said tube proximate said speaker for permitting the passage of air into said tube.
Claim 19
Dependent Claim
76 words
An improved speaker assembly, comprising: a speaker having a frontal side; a tube having one open inlet portion and at least one open outlet portion; first means coupled to said speaker and to said tube for positioning said inlet portion adjacent the frontal side of said speaker so as to receive sound waves therefrom; and an aperture in said inlet portion of said tube proximate said speaker for permitting the passage of air into said tube.
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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) | 1989-10-13 | 1990-04-14 | 1990-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-13 | 1994-04-14 | 1994-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-13 | 1998-04-14 | 1998-10-14 | $7700.00 | Window Closed / Lapsed |