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Patent US4187337A successfully refreshed from Google Patents.
US4187337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-slip underlay
Assignee: Individual
•
Filing: 1977-12-28
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Granted: 1980-02-05
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Expires: 1997-12-28
Abstract
Abstract An underlay with antislip properties is disclosed in which there are three layers, one being a resilient layer of foam material or rubber, to which is attached the second layer which is of interlocked fibrous material; the third layer is a looser fibrous layer and is connected by interlocking with the fibres of the second layer. When the underlay is used between a rug and a carpet the first layer is placed against the underneath of the rug, while the third layer interacts with the topside of the carpet. When the underlay is used between a carpet (or rug) and a floor, the first layer is placed against the underneath of the carpet.
Inventors
- 👤 Roland H. Romageon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:07
CPC Classifications
A; A47; A47G; A47G27/00; A47G27/04; A47G27/0406; A47G27/0412; B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; B32B25/00; B32B25/10; B32B3/00; B32B3/02; B32B3/06; B32B5/02; B32B5/022; B32B5/06; B32B5/18; B32B5/245; D; D06; D06N; D06N7/00; D06N7/0005; D06N7/0039; D06N7/0047; D06N7/0049; B32B2262/00; B32B2262/02; B32B2262/0276; B32B2307/00; B32B2307/70; B32B2307/744; B32B2471/00; B32B2471/02; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23979; Y10T428/24; Y10T428/24942; Y10T428/24992; Y10T442/00; Y10T442/60; Y10T442/647; Y10T442/651
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
136 words
An underlay for carpets, rugs and the like, comprising: a first layer which is of resilient material selected from the group comprising resilient synthetic foam material and rubber; a second layer of non-woven fibrous material which is secured to one face of said first layer without substantial penetration of its fibers into said first layer; and a third layer of non-woven fibrous material which is connected by inerlocking with the fibers of said second layer, said second layer of non-woven fibrous material being needle-felted to cause compaction and interlocking of the fibers of said second layer thereby causing said second layer to have a density greater than the third layer; whereby the outer face of the first layer provides a non-skid surface and an outer face of the third layer provides a relatively rought, fibrous surface.
Claim 2
Dependent Claim
136 words
An underlay for carpets, rugs and the like, comprising: a first layer which is of resilient material selected from the group comprising resilient synthetic foam material and rubber; a second layer of non-woven fibrous material which is secured to one face of said first layer without substantial penetration of its fibers into said first layer; and a third layer of non-woven fibrous material which is connected by inerlocking with the fibers of said second layer, said second layer of non-woven fibrous material being needle-felted to cause compaction and interlocking of the fibers of said second layer thereby causing said second layer to have a density greater than the third layer; whereby the outer face of the first layer provides a non-skid surface and an outer face of the third layer provides a relatively rought, fibrous surface.
Claim 3
Dependent Claim
59 words
A first carpet, rug or like floor-covering which is laid upon a second carpet, rug or like floor-covering with the interposition therebetween of an underlay according to claim 1 wherein the outer face of the first layer of the underlay contacts the underside of the first floor-covering and the outer face of the third layer contacts the second floor-covering.
Claim 4
Dependent Claim
51 words
A carpet, rug or the like floor-covering which is separated from a hard floor by means of an underlay according to claim 1, wherein the outer face of said first layer of the underlay contacts the floor and the outer face of said third layer contacts the underface of the floor-covering.
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) | 1983-02-04 | 1983-08-06 | 1984-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-04 | 1987-08-06 | 1988-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-04 | 1991-08-06 | 1992-02-05 | $7700.00 | Window Closed / Lapsed |