US4884615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound absorbent slats for window blinds
Assignee: Individual
•
Filing: 1988-09-27
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Granted: 1989-12-05
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Expires: 2008-09-27
Abstract
Abstract A slat for use in the assembly of a Venetian blind is provided with a light and sound absorptive coating on at least one of its major surfaces produced by flocking, applique, or textile weaving techniques, a preferred embodiment of the invention providing a strip having enhanced resistance to slippage of a coating appliqued to the strip and of a textile encapsulation of the strip in directions laterally and longitudinally of the strip.
Inventors
- 👤 Henry C. Hsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:28
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/24; E06B9/26; E06B9/38; E06B9/386
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
70 words
A sound absorbent slat for use in the construction of a window blind, said slat including a substrate in the form of a strip, and, further including a tubular sheath of woven fabric material formed in situ about said strip so as to tightly encapsulate said strip, said tubular sheath providing a continuous coating of a light and sound absorbent material on both of the major surfaces of said strip.
Claim 2
Dependent Claim
70 words
A sound absorbent slat for use in the construction of a window blind, said slat including a substrate in the form of a strip, and, further including a tubular sheath of woven fabric material formed in situ about said strip so as to tightly encapsulate said strip, said tubular sheath providing a continuous coating of a light and sound absorbent material on both of the major surfaces of said strip.
Claim 3
Dependent Claim
18 words
The sound absorbant slat of claim 1, in which said woven fabric material is bonded to said strip.
Claim 4
Dependent Claim
53 words
The sound of absorbent slat of claim 1, in which strip is perforated through at least one of its major surfaces to provide surface excrescences on the opposite major surface, said surface excrescences extending into said sheath of woven fabric material to positionally hold said tubular sheath against movement relative to said strip.
Claim 5
Dependent Claim
15 words
A sound absorbant slat of claim 1, in which said strip has serrated lateral edges.
Claim 6
Dependent Claim
41 words
The sound absorbent slat of claim 1, in which said tubular sheath of textile material is comprised of first textile strands extending longitudinally of said strip, and, second textile strands extending transversely of said strip and interwoven with said first strands.
Claim 7
Dependent Claim
24 words
The sound absorbent slat of claim 1, in which said tubular sheath of textile material is comprised of textile strands braided around said strip.
Claim 8
Dependent Claim
20 words
The sound absorbent slat of claim 1, in which said sheath of textile material is comprised of knitted textile strands.
References Cited (Backward Citations)
US2315640A
Cited
US3472305A
Cited
US4336834A
Cited
US4139043A
Cited
US4499938A
Cited
WO1985000849A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-12-04 | 1993-06-05 | 1993-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-04 | 1997-06-05 | 1997-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-04 | 2001-06-05 | 2001-12-05 | $7700.00 | Window Closed / Lapsed |