US5281459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety tile, as well as cover plate to be used therewith
Assignee: Rubet International BV
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Filing: 1992-04-20
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Granted: 1994-01-25
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Expires: 2012-04-20
Abstract
Abstract The invention relates to a safety tile, including a tile body of rigid material, such as concrete, and a cover plate provided with an enclosing edge and being of an elastically flexible material, such as rubber. The cover plate has ribs integrally formed therewith uniformly distributed at its bottom side directed towards the tile body, of which the bottom ends hang down and rest on the upper surface of the tile body. The ribs extend diagonally across the bottom side of the plate with main diagonals extending between two opposite corners of the cover plate. Near each of the two opposite corners, each main diagonal rib has a widened bearing face which forms the basis of a locking part connected therewith, which locking parts have been locked in the tile body.
Inventors
- 👤 Richard J. F. Van Eijck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:55
CPC Classifications
E; E01; E01C; E01C5/00; E01C5/22; E01C5/226; E01C13/00; E01C13/04; E01C13/045; E04; E04F; E04F15/00; E04F15/02; E04F15/02161; E04F15/10; Y; Y10; Y10T; Y10T428/00; Y10T428/16; Y10T428/163; Y10T428/164; Y10T428/24; Y10T428/24008; Y10T428/24017; Y10T428/24174; Y10T428/24182
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
90 words
A safety tile comprising: (a) a cover plate of elastically flexible material with a top layer, a bottom side, and a plurality of corners; (b) a plurality of ribs integrally formed thereon extending diagonally, uniformly distributed on the bottom side, forming a cross-hatch pattern, including at least one main diagonal rib extending between opposite corners; (c) at least one bearing face, formed integrally on one main diagonal rib adjacent to one corner; and (d) at least one locking part, formed integrally with one of the ribs on the bearing face.
Claim 2
Dependent Claim
90 words
A safety tile comprising: (a) a cover plate of elastically flexible material with a top layer, a bottom side, and a plurality of corners; (b) a plurality of ribs integrally formed thereon extending diagonally, uniformly distributed on the bottom side, forming a cross-hatch pattern, including at least one main diagonal rib extending between opposite corners; (c) at least one bearing face, formed integrally on one main diagonal rib adjacent to one corner; and (d) at least one locking part, formed integrally with one of the ribs on the bearing face.
Claim 3
Dependent Claim
15 words
The safety tile according to claim 1, further comprising an edge enclosing the cover plate.
Claim 4
Dependent Claim
20 words
The safety tile according to claim 2, wherein the edge is downwardly bent and formed integrally with the cover plate.
Claim 5
Dependent Claim
18 words
The safety tile according to claim 1, the bearing face being a widened part of the diagonal rib.
Claim 6
Dependent Claim
36 words
The safety tile according to claim 1, the ribs including at least two successive end ribs crossing the main diagonal rib, the bearing face being formed on the main diagonal rib between two successive end ribs.
Claim 7
Dependent Claim
25 words
The safety tile according to claim 1, wherein the cover plate has a square shape, and wherein the ribs form a diagonal pattern of squares.
Claim 8
Dependent Claim
28 words
The safety tile according to claim 1, each locking part having a stem connected to the bearing face, and a widened body at an end of the stem.
Claim 9
Dependent Claim
13 words
The safety tile according to claim 7, wherein the widened body is anchor-shaped.
Claim 10
Dependent Claim
31 words
The safety tile according to claim 1, further comprising a tile body of rigid material disposed adjacent to the bottom side of the cover plate, the locking parts being connected therewith.
Claim 11
Dependent Claim
13 words
The safety tile according to claim 9, wherein the rigid material is concrete.
Claim 12
Dependent Claim
30 words
The safety tile according to claim 9, the tile body being cavitated to define a plurality of cavities, the lock parts being connected to the tile body at the cavities.
Claim 13
Dependent Claim
40 words
The safety tile according to claim 1, further comprising a closing plate having a plurality of openings, mounted on the bottom side of the cover plate lying against the ribs, the locking parts projecting through the openings, forming a unit.
Claim 14
Dependent Claim
25 words
The safety tile according to claim 1, further comprising a floor on which the cover plate is disposed, the locking parts connected to the floor.
Claim 15
Dependent Claim
106 words
A safety tile comprising: (a) a substantially square-shaped cover plate of elastically flexible material with a top layer, a bottom side, and a plurality of corners; (b) a plurality of ribs integrally formed thereon extending diagonally, uniformly distributed on the bottom side of the cover plate, forming a cross-hatch pattern, including a plurality of main diagonal ribs extending between opposite corners; (c) a widened bearing face, formed integrally on each main diagonal rib adjacent to each corner; and (d) a locking part on each bearing face, including a stem integrally formed with the bearing face, and a widened body formed on an end of the stem.
Claim 16
Dependent Claim
106 words
A safety tile comprising: (a) a substantially square-shaped cover plate of elastically flexible material with a top layer, a bottom side, and a plurality of corners; (b) a plurality of ribs integrally formed thereon extending diagonally, uniformly distributed on the bottom side of the cover plate, forming a cross-hatch pattern, including a plurality of main diagonal ribs extending between opposite corners; (c) a widened bearing face, formed integrally on each main diagonal rib adjacent to each corner; and (d) a locking part on each bearing face, including a stem integrally formed with the bearing face, and a widened body formed on an end of the stem.
Claim 17
Dependent Claim
17 words
The safety tile according to claim 14, further comprising a tile body connected to the locking parts.
Claim 18
Dependent Claim
40 words
The safety tile according to claim 14, further comprising a closing plate having a plurality of openings, mounted on the bottom side of the cover plate, lying against the ribs, the locking parts projecting through the openings, forming a unit.
Claim 19
Dependent Claim
29 words
The safety tile according to claim 16, further comprising a casting material disposed under the cover plate, the closing plate and the ribs defining a plurality of cavities therebetween.
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) | 1997-01-24 | 1997-07-26 | 1998-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-01-24 | 2001-07-26 | 2002-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-01-24 | 2005-07-26 | 2006-01-25 | $7700.00 | Window Closed / Lapsed |