US3590941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speaker enclosure
Assignee: Meritor Inc
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Filing: 1969-10-10
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Granted: 1971-07-06
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Expires: 1989-10-10
Abstract
Abstract A speaker enclosure for improving the frequency response of a loudspeaker. The speaker is placed within the enclosure and has its face aligned perpendicularly with the front side of the enclosure, so that the speaker axis is directed parallel to the sound output opening of the enclosure. The smallest dimension of the speaker face corresponds with the depth of the enclosure, and said speaker face is sealed against a baffle system which forms a channel directed divergingly outward from the speaker toward one end of the enclosure. A faceplate is sealed over the front of the enclosure and against the forward edge of the baffle system, said faceplate being provided with a cutout portion over the channel of the baffle system. The cutout portion is narrow at the face of the speaker, and becomes gradually wider toward the end of the enclosure to control the uniformity of the frequency response of the enclosure.
Inventors
- 👤 John A Mckenzie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:31
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/20; H04R1/22; H04R1/28; H04R1/2807; H04R1/2853; H04R1/2857; H04R1/227; H04R1/32; H04R1/34; H04R1/345
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
109 words
A speaker enclosure, comprising a housing having an open front face; a speaker mounted in said housing and having its output face directed perpendicularly to said front face; baffle means open to said front face and extending laterally and forwardly outwardly from the output face of the speaker toward said front face; and a faceplate covering said front face of said housing and abutting said baffle means to form an enclosed compartment with said baffle means and speaker outPut face, said faceplate having an opening therein disposed over said compartment; said faceplate opening diverging laterally outwardly from the speaker output face for controlling the frequency response of said compartment.
Claim 2
Dependent Claim
109 words
A speaker enclosure, comprising a housing having an open front face; a speaker mounted in said housing and having its output face directed perpendicularly to said front face; baffle means open to said front face and extending laterally and forwardly outwardly from the output face of the speaker toward said front face; and a faceplate covering said front face of said housing and abutting said baffle means to form an enclosed compartment with said baffle means and speaker outPut face, said faceplate having an opening therein disposed over said compartment; said faceplate opening diverging laterally outwardly from the speaker output face for controlling the frequency response of said compartment.
Claim 3
Dependent Claim
24 words
The invention as set forth in claim 1 in which said baffle means extend divergingly away from the sides of the speaker output face.
Claim 4
Dependent Claim
115 words
The invention as set forth in claim 1 with the addition that a second speaker is mounted in said enclosure with the rear sides of said speakers lying adjacent each other and their output faces directed in opposite directions; second baffle means open to said front face and extending laterally and forwardly outwardly from the output face of the second speaker toward said front face; said faceplate forms a second enclosed compartment with said second baffle means and second speaker output face; and said faceplate has a second opening therein disposed over said second compartment and diverging laterally outwardly from said second speaker output face for controlling the frequency response curve of said second compartment.
Claim 5
Dependent Claim
148 words
A speaker enclosure, comprising a housing having an open front face; a speaker mounted in said housing and having its output face directed perpendicularly to said front face; a rear baffle extending from the speaker output face at the rear of the housing toward the front face of the housing and away from the speaker output face; a pair of side baffles extending respectively along the sides of said rear baffle and each extending from the sides of the speaker and from front to rear in the housing; said side and rear baffles forming a channel in communication with, and extending away from, the output face of the speaker; and a faceplate covering said front side of said housing and having an opening therein disposed over said channel; said faceplate opening diverging laterally outwardly from the speaker output face for controlling the frequency response curve of said channel.
Claim 6
Dependent Claim
148 words
A speaker enclosure, comprising a housing having an open front face; a speaker mounted in said housing and having its output face directed perpendicularly to said front face; a rear baffle extending from the speaker output face at the rear of the housing toward the front face of the housing and away from the speaker output face; a pair of side baffles extending respectively along the sides of said rear baffle and each extending from the sides of the speaker and from front to rear in the housing; said side and rear baffles forming a channel in communication with, and extending away from, the output face of the speaker; and a faceplate covering said front side of said housing and having an opening therein disposed over said channel; said faceplate opening diverging laterally outwardly from the speaker output face for controlling the frequency response curve of said channel.
Claim 7
Dependent Claim
30 words
The invention as set forth in claim 4 in which said side baffles diverge laterally outwardly from said output face toward the end of said channel remote from the speaker.
Claim 8
Dependent Claim
60 words
The invention as set forth in claim 5 in which said faceplate opening is narrower than said channel at the speaker output face with the lateral edges of said opening extending laterally from said speaker output face toward the sides of the channel in an exponential manner, and then angling further laterally outward adjacent the outer end of the channel.
Claim 9
Dependent Claim
110 words
The invention as set forth in claim 6 with the addition that said faceplate opening is narrower than said channel at the speaker output face with the lateral edges of said opening extending laterally from said speaker output face toward the sides of the channel in an exponential manner, and then angling laterally outwardly adjacent the outer end of the channel, said side baffles diverging laterally from said output face toward the outer end of said channel, the angle at which said side baffles and said rear baffle extend from said output face becoming more obtuse at a common plane adjacent the end of the enclosure remote from the speaker.
Claim 10
Dependent Claim
143 words
The invention as set forth in claim 4, with the addition that a second speaker is mounted in said enclosure with the rear sides of said speakers lying adjacent each other and their output faces directed in opposite directions; a second rear baffle extends from the second speaker face at the rear of the housing toward said housing front face; a second pair of side baffles extends respectively along the sides of said second rear baffle from said rear baffle to said housing front face; said second side and rear baffles forming a second channel in communication with the output face of the second speaker; and said faceplate covers said second channel and has a second opening therein disposed over said second channel and diverging laterally outwardly from said second speaker output face for controlling the frequency response curve of said second chanNel.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |