Patent US2887927A successfully refreshed from Google Patents.
Patent US3713508A successfully refreshed from Google Patents.
US3713508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound absorbing and attenuating structure
Assignee: ECKEL INDUSTRIES Inc
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Filing: 1972-01-13
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Granted: 1973-01-30
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Expires: 1992-01-13
Abstract
Abstract A sound absorbing and attenuating structure has an outer support within which there are at least three compartments, the intermediate one being empty and the others being filled with fiber glass or other sound absorbing material. Two of said compartments extend continuously from the top extremity to the bottom extremity, while the intermediate compartment also does, but is equipped with shelves that extend alternately left to right and right to left. Covers at the top and bottom extremities close my structure.
Inventors
- 👤 O Eckel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:19
CPC Classifications
B; B32; B32B; B32B3/00; B32B3/26; B32B3/28; E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/8227; E04B2/00; E04B2/74; E04B2/7407; E04B2/7416; E04B2/7422; E04B2/7427; B32B2307/00; B32B2307/10; B32B2307/102; E04B2/7409; E04B1/84; E04B2001/8423; E04B2001/8428; E04B2001/8452
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
90 words
A sound absorbing structure comprising outer supporting means having front and rear face members spaced apart, a septum supported by said means and positioned intermediate of and spaced from said front and rear face members to thereby provide an intermediate compartment and two compartments in said spaces at opposite sides of said septum, said septum having shaft portions alternately adjoining said latter two compartments and having connectors spaced apart and extending respectively at an angle between two of said shaft portions, and sound absorbing material in said latter two compartments.
Claim 2
Dependent Claim
90 words
A sound absorbing structure comprising outer supporting means having front and rear face members spaced apart, a septum supported by said means and positioned intermediate of and spaced from said front and rear face members to thereby provide an intermediate compartment and two compartments in said spaces at opposite sides of said septum, said septum having shaft portions alternately adjoining said latter two compartments and having connectors spaced apart and extending respectively at an angle between two of said shaft portions, and sound absorbing material in said latter two compartments.
Claim 3
Dependent Claim
90 words
A sound absorbing structure comprising outer supporting means having front and rear face members spaced apart, a septum supported by said means and positioned intermediate of and spaced from said front and rear face members to thereby provide an intermediate compartment and two compartments in said spaces at opposite sides of said septum, said septum having shaft portions alternately adjoining said latter two compartments and having connectors spaced apart and extending respectively at an angle between two of said shaft portions, and sound absorbing material in said latter two compartments.
Claim 4
Dependent Claim
90 words
A sound absorbing structure comprising outer supporting means having front and rear face members spaced apart, a septum supported by said means and positioned intermediate of and spaced from said front and rear face members to thereby provide an intermediate compartment and two compartments in said spaces at opposite sides of said septum, said septum having shaft portions alternately adjoining said latter two compartments and having connectors spaced apart and extending respectively at an angle between two of said shaft portions, and sound absorbing material in said latter two compartments.
Claim 5
Dependent Claim
26 words
A sound absorbing structure as of claim 1, said intermediate compartment being empty, said material forming a rigid unit in each of said latter two compartments.
Claim 6
Dependent Claim
42 words
A sound absorbing structure as of claim 1, said supporting means having sides at opposite extremities of said structure, and covers having flanges respectively extending parallel with and adjacent said sides and respectively terminating in loop portions turned inwardly towards said sides.
Claim 7
Dependent Claim
18 words
A sound absorbing structure as of claim 1, an adjoining said structure, and hinges movably connecting said structures.
Claim 8
Dependent Claim
27 words
A sound absorbing structure as of claim 1, said supporting means having covers at opposite ends thereof, said septum shaft portions extending from and between said covers.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |