US4840824A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stairtread facings and a co-extrusion method for their manufacture
Assignee: Federal Mogul Friction Products Ltd
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Filing: 1987-10-13
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Granted: 1989-06-20
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Expires: 2007-10-13
Abstract
Abstract A stairtread facing consists essentially of a strip of friction material and a location member therefor. The strip of friction material is a co-extrusion with at least a part of the location member which rests on a stair, and both friction material and location member are made of rubber or plastics material.
Inventors
- 👤 Robert J. Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:47
CPC Classifications
E; E04; E04F; E04F11/00; E04F11/02; E04F11/104; E04F11/16; E04F11/163; E04F11/166; A; A47; A47G; A47G27/00; A47G27/06; B; B29; B29C; B29C48/00; B29C48/16; B29C48/18; B29C48/19; B29C48/21; B29C48/03; B29C48/12; Y; Y10; Y10T; Y10T428/00; Y10T428/22; Y10T428/24; Y10T428/24479; Y10T428/24488; Y10T428/24496; Y10T428/24504; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249991; Y10T428/249992
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
49 words
A stairtread facing coxtruded to provide a locating member and one or more integral strips of non-slip friction material, wherein said locating member is shaped to locate said one or more strips on a stairtread, and wherein said locating member and said one or more strips have different properties.
Claim 2
Dependent Claim
49 words
A stairtread facing coxtruded to provide a locating member and one or more integral strips of non-slip friction material, wherein said locating member is shaped to locate said one or more strips on a stairtread, and wherein said locating member and said one or more strips have different properties.
Claim 3
Dependent Claim
26 words
A stairtread facing according to claim 1 wherein said locating member is substantially L-shaped and is adapted to extend over a nose portion of the stairtread.
Claim 4
Dependent Claim
46 words
A stairtread facing according to claim 11 in which the location member is in the form of a channel member extruded from a plastics or rubber material, said channel member including at least one groove for receiving said one or more strips of non-slip friction material.
Claim 5
Dependent Claim
36 words
A stairtread facing according to claim 11 in which the location member is in the form of two sections of plastics or rubber material extending one from each edge of one strip of non-slip friction material.
Claim 6
Dependent Claim
27 words
A stairtread facing according to any one of claims, 2 or 3 in which the non-slip friction material is a flexible plastics or rubber based anti-slip compound.
Claim 7
Dependent Claim
26 words
A stairtread facing according to claim 11 wherein said location member is provided with a detachable nose portion to extend over the edge of the stairtread.
Claim 8
Dependent Claim
49 words
A stairtread facing according to claim 5 in which the detachable nose portion comprises an extrusion which includes attachment means cooperative with mating means on the locating member for snap fit engagement with said locating member such that the detachable nose portion extends substantially perpendicularly from said locating member.
Claim 9
Dependent Claim
26 words
A stairtreaded facing according to claim 11 and further comprising a decorative surface finish applied to said location member by embossing, flocking and/or hot foil marking.
Claim 10
Dependent Claim
22 words
A stairtread facing according to claim 11 in which at least part of the plastics or rubber material is a foamed material.
Claim 11
Independent Claim
86 words
A method of making a stairtread facing which comprises co-extruding at least one strip on non-slip friction material and at least a part of a location member for said strip, said part of the location member being adapted to rest on a tread on a staircase, whereby the co-extruded strip of friction material and said part of the location member form integral parts of the facing without need of a separate step to adhere said strip of friction material and part of the location member together.
Claim 12
Independent Claim
86 words
A method of making a stairtread facing which comprises co-extruding at least one strip on non-slip friction material and at least a part of a location member for said strip, said part of the location member being adapted to rest on a tread on a staircase, whereby the co-extruded strip of friction material and said part of the location member form integral parts of the facing without need of a separate step to adhere said strip of friction material and part of the location member together.
Claim 13
Dependent Claim
36 words
A method according to claim 10 in which the said part of the location member comprises a plastics or rubber material, and said strip of friction material comprises a flexible plastics or rubber based friction compound.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-06-19 | 1992-12-19 | 1993-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-19 | 1996-12-19 | 1997-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-19 | 2000-12-19 | 2001-06-20 | $7700.00 | Window Closed / Lapsed |