Patent US4377016A successfully refreshed from Google Patents.
US4377016A
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US
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Footmat
Assignee: Vredestein NV
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Filing: 1981-09-17
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Granted: 1983-03-22
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Expires: 2001-09-17
Abstract
Abstract A shoe cleaning mat employs a plurality of spaced projections on a base layer, all projecting to substantially the same height to provide a stable support. Some of the projections are each provided with an array of radially extending ribs which are progressively deeper in the radially outward direction to provide corresponding increasing elasticity. Two different sizes of such projections are employed and a third type of projection, smaller than the other two, is provided with vertically extending side ribs which are progressively deeper in upward direction.
Inventors
- 👤 Anton G. A. Niermeijer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:33
CPC Classifications
A; A47; A47L; A47L23/00; A47L23/22; A47L23/24; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/2457; Y10T428/24628; Y10T428/24669
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
145 words
A foot mat of flexible, resilient material and comprising a base layer having a predetermined size and contour, and a plurality of discrete and mutually spaced projections integrally formed with and upstanding from said base layer, the projections being distributed over the area encompassed by said base layer and each rising to substantially the same height above the base layer whereby to present an interrupted but stable shoe-supporting arrangement elevated above the base layer with the spaces between the projections presenting debriscollecting regions, at least some of said projections having an array of radially extending ribs integrally formed therewith, the ribs of each such array being of progressively greater depth in the radial outward direction thereof, whereby to possess increasing elasticity in such radial outward direction and the ribs of each such array merging centrally of the associated projection in a solid, central part thereof.
Claim 2
Dependent Claim
145 words
A foot mat of flexible, resilient material and comprising a base layer having a predetermined size and contour, and a plurality of discrete and mutually spaced projections integrally formed with and upstanding from said base layer, the projections being distributed over the area encompassed by said base layer and each rising to substantially the same height above the base layer whereby to present an interrupted but stable shoe-supporting arrangement elevated above the base layer with the spaces between the projections presenting debriscollecting regions, at least some of said projections having an array of radially extending ribs integrally formed therewith, the ribs of each such array being of progressively greater depth in the radial outward direction thereof, whereby to possess increasing elasticity in such radial outward direction and the ribs of each such array merging centrally of the associated projection in a solid, central part thereof.
Claim 3
Dependent Claim
40 words
A foot mat as defined in claim 1 wherein some of those projections provided with an array of radially extending ribs are of a relatively large plan view cross sectional area whereas others are of a smaller plan view area.
Claim 4
Dependent Claim
41 words
A foot mat as defined in claim 1 or 2 wherein some of said projections are vertically fluted to present upstanding side ribs extending upwardly from said base layer, the depth of the flute progressively increasing upwardly from said base layer.
Claim 5
Dependent Claim
34 words
A foot mat as defined in claim 3 wherein the vertically fluted projections are of substantially smaller plan view cross sectional area than any of the projections having an array of radially extending ribs.
Claim 6
Dependent Claim
18 words
A foot mat as defined in claim 3 wherein each of said projections is of frusto-conical vertical shape.
Claim 7
Dependent Claim
18 words
A foot mat as defined in claim 4 wherein each of said projections is of frusto-conical vertical shape.
Claim 8
Dependent Claim
20 words
A foot mat as defined in claim 1 or 2 wherein each of said projections is of frusto-conical vertical shape.
References Cited (Backward Citations)
CA894403A
Cited
US2667654A
Cited
FR1219084A
Cited
US3100312A
Cited
GB1146527A
Cited
US3616104A
Cited
US3886620A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-03-21 | 1986-09-20 | 1987-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-21 | 1990-09-20 | 1991-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-21 | 1994-09-20 | 1995-03-22 | $7700.00 | Window Closed / Lapsed |