Patent US5400413A successfully refreshed from Google Patents.
US5400413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pre-formed speaker grille cloth
Assignee: Dana Innovations Inc
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Filing: 1993-12-01
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Granted: 1995-03-21
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Expires: 2013-12-01
Abstract
Abstract A grille cloth for speaker assemblies is preformed into a desired shape and has sufficient rigidity to maintain this pre-formed shape while being supported in a non-tensional manner only at its periphery. The use of such a pre-formed fabric as a grille cloth eliminates a need for non-peripheral support while visually obscuring the components of the speaker assembly behind the grille cloth. The grille cloth is comprised of a polyester material which is substantially transparent to acoustic radiation in the audible frequency range while also being substantially opaque to visible light.
Inventors
- 👤 William J. Kindel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:08
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/02; H04R1/023
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
92 words
An in-wall speaker assembly comprising: (a) a housing in which at least one speaker is disposed; (b) a grille attached to said housing substantially covering said speaker; (c) a fabric grille cloth disposed within said housing intermediate said speaker and said grille, said fabric grille cloth including a rectangular planar member and a peripheral side member extending perpendicular thereto, said fabric grille cloth having sufficient rigidity to maintain its shape when supported only by said peripheral side member; and (d) wherein said fabric grille cloth is self-supporting and visually obscures the speaker.
Claim 2
Dependent Claim
92 words
An in-wall speaker assembly comprising: (a) a housing in which at least one speaker is disposed; (b) a grille attached to said housing substantially covering said speaker; (c) a fabric grille cloth disposed within said housing intermediate said speaker and said grille, said fabric grille cloth including a rectangular planar member and a peripheral side member extending perpendicular thereto, said fabric grille cloth having sufficient rigidity to maintain its shape when supported only by said peripheral side member; and (d) wherein said fabric grille cloth is self-supporting and visually obscures the speaker.
Claim 3
Dependent Claim
18 words
The cloth speaker assembly as recited in claim 1 wherein said fabric grille cloth is comprised of polyester.
Claim 4
Dependent Claim
25 words
The speaker assembly as recited in claim 1 wherein said fabric grille cloth is comprised of polyester in the weight range of approximately 5-15 oz.
Claim 5
Dependent Claim
24 words
The speaker assembly as recited in claim 1 wherein said fabric grille cloth is comprised of polyester having a weight of approximately 10 oz.
Claim 6
Dependent Claim
21 words
The speaker assembly as recited in claim 1 wherein said fabric grille cloth is of sufficient thickness to be visually opaque.
Claim 7
Dependent Claim
22 words
The speaker assembly as recited in claim 1 wherein said fabric grille cloth is between approximately 1 mm and 5 mm thick.
Claim 8
Dependent Claim
18 words
The speaker assembly as recited in claim 1 wherein said fabric grille cloth is approximately 2 mm thick.
References Cited (Backward Citations)
US2106813A
Cited
US2115098A
Cited
US3727004A
Cited
US3941207A
Cited
US4140203A
Cited
US4244096A
Cited
US4365114A
Cited
US4441577A
Cited
US4811406A
Cited
US5031720A
Cited
US4949386A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-03-20 | 1998-09-19 | 1999-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-03-20 | 2002-09-19 | 2003-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-03-20 | 2006-09-19 | 2007-03-21 | $7700.00 | Window Closed / Lapsed |