US4625829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speaker grill
Assignee: Individual
•
Filing: 1984-03-26
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Granted: 1986-12-02
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Expires: 2004-03-26
Abstract
Abstract The present invention relates to a grill comprising one or more acoustic shells to be used in combination with conventional acoustic speakers. The speaker grill of the present invention in it simplest form is an acoustic shell which serves to focus the acoustic emissions generated by the speaker. In a preferred embodiment of the present invention the speaker grill is constructed of a series of acoustic shells. The different acoustic shells may focus different portions of the acoustic spectrum. The speaker grill of the present invention has particular use with an automobile speaker. The speaker grill of the present invention can be used in any listening area and has particular application to small environments, environments having spacial restriction, critical listening environments such as recording studios, and environments which utilize sound reinforcement systems.
Inventors
- 👤 Ronald A. Sirois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:50
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/18; G10K11/26; G10K11/28; H; H04; H04R; H04R1/00; H04R1/02; H04R1/023; H04R1/20; H04R1/32; H04R1/34; H04R1/345
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
70 words
A grill to be used in combination with an acoustic speaker comprising: a frame for placement over the acoustic speaker having a passage therethrough, said passage having an area; and a first acoustic shell attached to said frame and extending over a portion of said passage, said portion being so limited that said first shell's projection onto said passage is less than approximately one half the area of said passage.
Claim 2
Dependent Claim
70 words
A grill to be used in combination with an acoustic speaker comprising: a frame for placement over the acoustic speaker having a passage therethrough, said passage having an area; and a first acoustic shell attached to said frame and extending over a portion of said passage, said portion being so limited that said first shell's projection onto said passage is less than approximately one half the area of said passage.
Claim 3
Dependent Claim
15 words
The grill of claim 1 wherein said first acoustic shell is provided with a port.
Claim 4
Dependent Claim
13 words
The grill of claim 1 further comprising at least one additional acoustic shell.
Claim 5
Dependent Claim
13 words
The grill of claim 2 further comprising at least one additonal acoustic shell.
Claim 6
Dependent Claim
20 words
The grill of claim 1 wherein said first acoustic shell has a vertical cross section which approximates an exponential curve.
Claim 7
Dependent Claim
19 words
The grill of claim 5 wherein said first acoustic shell has a horizontal cross section which approximates an arc.
Claim 8
Dependent Claim
17 words
The grill of claim 3 wherein said acoustic shells have vertical cross sections which approximate exponential curves.
Claim 9
Dependent Claim
16 words
The grill of claim 4 wherein said acoustic shells have horizontal cross sections which approximate arcs.
Claim 10
Dependent Claim
63 words
An acoustic speaker system comprising: at least one acoustic speaker for generating acoustic emissions; a frame having a passage therethrough, said passage having an area and being positioned over said acoustic speaker; and a first acoustic shell attached to said frame, said first acoustic shell having a projection onto said passage which is less than approximately one half the area of said passage.
Claim 11
Dependent Claim
63 words
An acoustic speaker system comprising: at least one acoustic speaker for generating acoustic emissions; a frame having a passage therethrough, said passage having an area and being positioned over said acoustic speaker; and a first acoustic shell attached to said frame, said first acoustic shell having a projection onto said passage which is less than approximately one half the area of said passage.
Claim 12
Dependent Claim
17 words
The acoustic speaker system of claim 9 wherein said first acoustic shell is provided with a port.
Claim 13
Dependent Claim
15 words
The acoustic speaker system of claim 9 further comprising at least one additional acoustic shell.
Claim 14
Dependent Claim
15 words
The acoustic speaker system of claim 10 further comprising at least one additional acoustic shell.
Claim 15
Dependent Claim
22 words
The acoustic speaker system of claim 9 wherein said first acoustic shell has a vertical cross section which approximates an exponential curve.
Claim 16
Dependent Claim
21 words
The acoustic speaker system of claim 9 wherein said first acoustic shell has a horizontal cross section which approximates an arc.
Claim 17
Dependent Claim
19 words
The acoustic speaker system of claim 11 wherein said acoustic shells have vertical cross section which approximate exponential curves.
Claim 18
Dependent Claim
18 words
The acoustic speaker system of claim 15 wherein said acoustic shells have horizontal cross sections which approximate arcs.
Claim 19
Dependent Claim
104 words
An acoustic speaker system comprising: a first acoustic speaker; a frame with a passage therethrough positioned over said first acoustic speaker; a first acoustic shell attached to said frame; a second acoustic shell attached to said frame and spaced apart from said first acoustic shell; a third acoustic shell attached to said frame and spaced apart from said first and said second acoustic shells; a fourth acoustic shell spaced apart from said first, said second and said third acoustic shells; a second acoustic speaker positioned between said second and said third acoustic shells; and a third acoustic speaker positioned between said first acoustic speaker.
Claim 20
Dependent Claim
104 words
An acoustic speaker system comprising: a first acoustic speaker; a frame with a passage therethrough positioned over said first acoustic speaker; a first acoustic shell attached to said frame; a second acoustic shell attached to said frame and spaced apart from said first acoustic shell; a third acoustic shell attached to said frame and spaced apart from said first and said second acoustic shells; a fourth acoustic shell spaced apart from said first, said second and said third acoustic shells; a second acoustic speaker positioned between said second and said third acoustic shells; and a third acoustic speaker positioned between said first acoustic speaker.
Claim 21
Dependent Claim
90 words
A grill to be used in combination with an acoustic speaker comprising: a frame having a passage therethrough said passage having an area; a first acoustic shell attached to said frame and extending over a portion of said passage, said portion being so limited that said first shell's projection onto said passage is less than approximately one half the area of said passage; and at least one additional acoustic shell, wherein said acoustic shells have vertical cross sections which approximate exponential curves and said acoustic shells progressively decrease in height.
Claim 22
Dependent Claim
90 words
A grill to be used in combination with an acoustic speaker comprising: a frame having a passage therethrough said passage having an area; a first acoustic shell attached to said frame and extending over a portion of said passage, said portion being so limited that said first shell's projection onto said passage is less than approximately one half the area of said passage; and at least one additional acoustic shell, wherein said acoustic shells have vertical cross sections which approximate exponential curves and said acoustic shells progressively decrease in height.
Claim 23
Dependent Claim
91 words
A grill to be used in combination with an acoustic speaker comprising: a frame having a passage therethrough said passage having an area; a first acoustic shell attached to said frame and and extending over a portion of said passage, said portion being so limited that said first shell's projection onto said passage is less than approximately one half the area of said passage; and at least one additional acoustic shell, wherein said acoustic shells have horizontal cross sections which approximate exponential curves and said acoustic shells progressively decrease in height.
Claim 24
Dependent Claim
91 words
A grill to be used in combination with an acoustic speaker comprising: a frame having a passage therethrough said passage having an area; a first acoustic shell attached to said frame and and extending over a portion of said passage, said portion being so limited that said first shell's projection onto said passage is less than approximately one half the area of said passage; and at least one additional acoustic shell, wherein said acoustic shells have horizontal cross sections which approximate exponential curves and said acoustic shells progressively decrease in height.
Claim 25
Dependent Claim
14 words
The grill of claim 19 wherein said first shell is provided with a port.
Claim 26
Dependent Claim
26 words
The grill of claim 18 wherein said acoustic shells are pivotably attached to said frame and said grill further comprises; means for collapsing said acoustic shells.
Claim 27
Dependent Claim
26 words
The grill of claim 19 wherein said acoustic shells are pivotably attached to said frame and said grill further comprises; means for collapsing said acoustic shells.
Claim 28
Dependent Claim
26 words
The grill of claim 20 wherein said acoustic shells are pivotably attached to said frame and said grill further comprises; means for collapsing said acoustic shells.
Claim 29
Dependent Claim
12 words
The grill of claim 18 wherein said decrease in height is exponential.
Claim 30
Dependent Claim
12 words
The grill of claim 19 wherein said decrease in height is exponential.
Claim 31
Dependent Claim
12 words
The grill of claim 20 wherein said decrease in height is exponential.
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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) | 1989-12-01 | 1990-06-02 | 1990-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-01 | 1994-06-02 | 1994-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-01 | 1998-06-02 | 1998-12-02 | $7700.00 | Window Closed / Lapsed |