Patent US4087948A successfully refreshed from Google Patents.
US4087948A
Expired / Lapsed
US
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Flooring elements
Assignee: Federal Mogul Friction Products Ltd
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Filing: 1977-01-13
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Granted: 1978-05-09
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Expires: 1997-01-13
Abstract
Abstract A flooring element having a moulded body and a partially raised surface which is of a material having a relatively high coefficient of friction, preferably the elements are provided with interlocking lugs so that a floor covering can be built up from a number of them.
Inventors
- 👤 Peter G. Mellor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:08
CPC Classifications
E; E04; E04F; E04F15/00; E04F15/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
196 words
A flooring element comprising a body which is a single moulding having an upper layer of parallel elongated first bars and a lower layer of parallel elongated second bars, the first bars being disposed substantially at right angles to the second bars, the first bars being in spaced relationship to each other in said upper layer and the second bars being in spaced relationship to each other in said lower layer whereby said first and second bars together define a pattern of openings through the body, said first bars having a partially raised upper surface of material having a high coefficient of friction, said body further including at its edge a plurality of lugs extending therefrom at positions each corresponding to a respective aligned bar, said lugs being shaped to provide an undercut between the body and the remote end of the lug whereby the lugs of two flooring elements may be interengaged to interconnect the flooring elements, the width of the lugs being such that the width of a pair of interengaged lugs is no more than the width of the respective aligned bar, whereby the pattern of openings is maintained by the interengaged lugs.
Claim 2
Dependent Claim
196 words
A flooring element comprising a body which is a single moulding having an upper layer of parallel elongated first bars and a lower layer of parallel elongated second bars, the first bars being disposed substantially at right angles to the second bars, the first bars being in spaced relationship to each other in said upper layer and the second bars being in spaced relationship to each other in said lower layer whereby said first and second bars together define a pattern of openings through the body, said first bars having a partially raised upper surface of material having a high coefficient of friction, said body further including at its edge a plurality of lugs extending therefrom at positions each corresponding to a respective aligned bar, said lugs being shaped to provide an undercut between the body and the remote end of the lug whereby the lugs of two flooring elements may be interengaged to interconnect the flooring elements, the width of the lugs being such that the width of a pair of interengaged lugs is no more than the width of the respective aligned bar, whereby the pattern of openings is maintained by the interengaged lugs.
Claim 3
Dependent Claim
24 words
A flooring element according to claim 1 in which the body has friction material also on the surface opposite to the partially raised surface.
Claim 4
Dependent Claim
20 words
A flooring element according to claim 1 in which the partially raised surface is composed of ribs of friction material.
Claim 5
Dependent Claim
24 words
A flooring element according to claim 3 in which the ribs of friction material are held in grooving in the body of the element.
Claim 6
Dependent Claim
44 words
A flooring element according to claim 1 in which the body has attachment lugs on all sides and is of a suitable shape to enable a plurality of elements to be built up, jigsaw fashion, into a covering for a desired area of floor.
Claim 7
Dependent Claim
25 words
A flooring element according to claim 5 in which the shape of the body is such that a straight edged covering can be built up.
Claim 8
Dependent Claim
22 words
A flooring element according to claim 1 in which the moulded body comprises polypropylene stabilized against the degradative influence of ultra-violet light.
Claim 9
Dependent Claim
16 words
A floor covering comprising a plurality of flooring elements as claimed in claim 1 connected together.
Claim 10
Dependent Claim
27 words
A floor covering according to claim 8 including an edge strip detachably mounted on a free edge of at least one element forming part of the covering.
Claim 11
Dependent Claim
19 words
A floor covering according to claim 9 in which the edge strip is profiled to provide a ramp surface.
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) | 1981-05-08 | 1981-11-07 | 1982-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-08 | 1985-11-07 | 1986-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-08 | 1989-11-07 | 1990-05-09 | $7700.00 | Window Closed / Lapsed |