Patent US4439644A successfully refreshed from Google Patents.
US4439644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Loud speaker enclosure
Assignee: JASKIEWICZ EDMUND M 1730 M ST NW WASHINGTON DC 20036
•
Filing: 1981-11-24
•
Granted: 1984-03-27
•
Expires: 2001-11-24
Abstract
Abstract A loudspeaker enclosure has a loudspeaker driver mounted on a surface of the enclosure such that the driver has an exposed front face to produce sound waves which are sought to be transmitted to a listening space exterior of the loudspeaker enclosure. A plurality of successive spaced limp or semi-limp non-porous pliable barriers are positioned in an opening between the interior and exterior spaces of the enclosure so as to relieve rear pressure of the loudspeaker driver while attenuating the rear sound waves and providing a damping effect on the loudspeaker driver.
Inventors
- 👤 Paul F. Bruney, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:48
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/20; H04R1/22; H04R1/28; H04R1/2869; H04R1/2876; H04R1/288; G; G10; G10K; G10K11/00; G10K11/002; H04R1/30
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
96 words
An enclosure for a loudspeaker driver comprising means for defining an enclosure having an interior space and adapted for the mounting of a loudspeaker driver having an exposed front face to produce sound waves to be transmitted to a listening space exterior of the loudspeaker enclosure, said enclosure means having at least one opening between the interior and exterior spaces thereof, and a plurality of successive spaced limp nonporous barriers to seal said opening between the interior and exterior spaces of the enclosure to relieve pressure behind the loudspeaker driver while attenuating the rear sound waves.
Claim 2
Dependent Claim
96 words
An enclosure for a loudspeaker driver comprising means for defining an enclosure having an interior space and adapted for the mounting of a loudspeaker driver having an exposed front face to produce sound waves to be transmitted to a listening space exterior of the loudspeaker enclosure, said enclosure means having at least one opening between the interior and exterior spaces thereof, and a plurality of successive spaced limp nonporous barriers to seal said opening between the interior and exterior spaces of the enclosure to relieve pressure behind the loudspeaker driver while attenuating the rear sound waves.
Claim 3
Dependent Claim
21 words
An enclosure as claimed in claim 1 and comprising a plurality of faces and one of said faces comprising said opening.
Claim 4
Dependent Claim
33 words
An enclosure as claimed in claim 1 and having five rigid faces, one of said faces being adapted for mounting a loudspeaker driver therein and said opening being opposed from said one face.
Claim 5
Dependent Claim
25 words
An enclosure as claimed in claim 1 wherein the enclosure means comprises a plurality of faces and each face comprises at least one limp barrier.
Claim 6
Dependent Claim
17 words
An enclosure as claimed in claim 1 wherein said barriers each comprises at least one vinyl sheet.
Claim 7
Dependent Claim
19 words
An enclosure as claimed in claim 5 wherein each of said barriers has a thickness ranging from 12-200 mils.
Claim 8
Dependent Claim
108 words
An enclosure for a loudspeaker driver comprising means for defining an enclosure having an interior sapce and adapted for the mounting of a loudspeaker driver having an exposed front face to produce sound waves to be transmitted to a listening space exterior of the loudspeaker enclosure, said enclosure means having at least one opening between the interior and exterior spaces thereof, and a plurality of successive spaced limp nonporous barriers between the interior and exterior spaces of the enclosure to relieve pressure behind the loudspeaker driver while attenuating the rear sound waves, and said barriers are of progressively increasing thickness in a direction away from a said driver.
Claim 9
Dependent Claim
108 words
An enclosure for a loudspeaker driver comprising means for defining an enclosure having an interior sapce and adapted for the mounting of a loudspeaker driver having an exposed front face to produce sound waves to be transmitted to a listening space exterior of the loudspeaker enclosure, said enclosure means having at least one opening between the interior and exterior spaces thereof, and a plurality of successive spaced limp nonporous barriers between the interior and exterior spaces of the enclosure to relieve pressure behind the loudspeaker driver while attenuating the rear sound waves, and said barriers are of progressively increasing thickness in a direction away from a said driver.
Claim 10
Dependent Claim
20 words
An enclosure as claimed in claim 7 wherein the first barrier after the driver has a thickness of 12 mils.
Claim 11
Dependent Claim
133 words
An enclosure for a loudspeaker driver comprising means for defining an enclosure having an interior space and adapted for the mounting of a loudspeaker driver having an exposed front face to produce sound waves to be transmitted to a listening space exterior of the loudspeaker enclosure, said enclosure means having at least one opening between the interior and exterior spaces thereof, and a plurality of successive spaced limp nonporous barriers between the interior and exterior spaces of the enclosure to relieve pressure behind the loudspeaker driver while attenuating the rear sound waves and means for defining a first passage extending rearwardly from said driver, means for defining a second passage concentric to said first passage and extending rearwardly from a cone of a said driver, said barriers being disposed within said second passage.
Claim 12
Dependent Claim
133 words
An enclosure for a loudspeaker driver comprising means for defining an enclosure having an interior space and adapted for the mounting of a loudspeaker driver having an exposed front face to produce sound waves to be transmitted to a listening space exterior of the loudspeaker enclosure, said enclosure means having at least one opening between the interior and exterior spaces thereof, and a plurality of successive spaced limp nonporous barriers between the interior and exterior spaces of the enclosure to relieve pressure behind the loudspeaker driver while attenuating the rear sound waves and means for defining a first passage extending rearwardly from said driver, means for defining a second passage concentric to said first passage and extending rearwardly from a cone of a said driver, said barriers being disposed within said second passage.
Claim 13
Dependent Claim
23 words
An enclosure as claimed in claim 9 wherein the area of said first passage is less than the area of said second passage.
Claim 14
Dependent Claim
13 words
An enclosure as claimed in claim 9 wherein said barriers have convolutions therein.
Claim 15
Dependent Claim
36 words
An enclosure as claimed in claim 1 and further comprising means for defining a horn loading structure at the rear of said driver, said barriers being disposed behind said driver within said horn loading structure means.
References Cited (Backward Citations)
US2121008A
Cited
FR791127A
Cited
GB512610A
Cited
FR856899A
Cited
US2713396A
Cited
US2991840A
Cited
US3430729A
Cited
US3757890A
Cited
US4127751A
Cited
US4161995A
Cited
US4101736A
Cited
US4227051A
Cited
US4284844A
Cited
US4301332A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-27 | 1987-09-26 | 1988-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-27 | 1991-09-26 | 1992-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-27 | 1995-09-26 | 1996-03-27 | $7700.00 | Window Closed / Lapsed |