US6988847B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paving unit
Assignee: Individual
•
Filing: 2001-07-06
•
Granted: 2006-01-24
•
Expires: 2021-07-06
Abstract
Abstract A interlocking paving unit has a top surface ( 2 ) and a plurality of side surfaces ( 4, 5 ), with at least one of the side surfaces ( 4, 5 ) of the paving unit being provided with at least one substantially vertically extending, substantially asymmetric protrusion ( 10 ). The protrusion ( 10 ) comprises a first ridge portion ( 11 ) and a second portion ( 12 ) being spaced apart by an intermediate portion ( 13 ). The protrusion ( 10 ) is locatable in a complementary recess on an adjacent paving unit, wherein the interengagement between the protrusion and the recess provides interlock between the paving unit and an adjacent paving unit.
Inventors
- 👤 Michael Lazar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:41
CPC Classifications
E; E01; E01C; E01C5/00; E01C2201/00; E01C2201/12
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
177 words
A paving unit for use as part of a paving arrangement, the paving unit comprising: a top surface and a plurality of side surfaces with one of the side surfaces of the paving unit provided with at least one substantially asymmetric vertically extending tongue and at least one substantially asymmetric vertically extending recessed groove when the paving unit is in an as laid form, the tongue including a ridge portion and a substantially tapering second portion, the ridge portion and the tapering portion being spaced apart by a substantially planar intermediate portion, the tongue capable of engaging a complementary groove in first adjacent paving unit, wherein said ridge portion, and the recessed groove only opening into a side surface of said paving unit to the extent that the recessed groove permits a complementary tongue on a second adjacent paving unit to be inserted into and enclosed within the recessed groove, wherein the interengagement between the tongue on the second adjacent paving unit and the recessed groove provides interlock between the paving unit and all adjacent paving units.
Claim 2
Dependent Claim
177 words
A paving unit for use as part of a paving arrangement, the paving unit comprising: a top surface and a plurality of side surfaces with one of the side surfaces of the paving unit provided with at least one substantially asymmetric vertically extending tongue and at least one substantially asymmetric vertically extending recessed groove when the paving unit is in an as laid form, the tongue including a ridge portion and a substantially tapering second portion, the ridge portion and the tapering portion being spaced apart by a substantially planar intermediate portion, the tongue capable of engaging a complementary groove in first adjacent paving unit, wherein said ridge portion, and the recessed groove only opening into a side surface of said paving unit to the extent that the recessed groove permits a complementary tongue on a second adjacent paving unit to be inserted into and enclosed within the recessed groove, wherein the interengagement between the tongue on the second adjacent paving unit and the recessed groove provides interlock between the paving unit and all adjacent paving units.
Claim 3
Dependent Claim
12 words
The paving unit according to claim 1 wherein the tongue is tapered.
Claim 4
Dependent Claim
19 words
The paving unit according to claim 2 wherein the tongue tapers towards a side surface of the paving unit.
Claim 5
Dependent Claim
20 words
The paving unit according to claim 1 wherein the second portion tapers towards a side surface of the paving unit.
Claim 6
Dependent Claim
27 words
The paving unit according to claim 1 wherein the intermediate portion extends in a direction which is substantially parallel to a side surface of the paving unit.
Claim 7
Dependent Claim
25 words
The paving unit according to claim 1 wherein the top surface of the paving unit is of substantially similar configuration as an adjacent paving unit.
Claim 8
Dependent Claim
17 words
The paving unit according to claim 1 wherein the top surface is of a substantially rectangular configurations.
Claim 9
Dependent Claim
30 words
The paving unit according to claim 1 wherein the paving unit has on opposed side surfaces at least one tongue and at least one complementary groove to receive a protrusion.
Claim 10
Dependent Claim
14 words
The paving unit according to claim 1 wherein opposed side surfaces both carry tongues.
Claim 11
Dependent Claim
16 words
The paving unit according to claim 1 , wherein opposed side surfaces both carry complementary grooves.
Claim 12
Dependent Claim
19 words
The paving unit according to claim 1 wherein opposed side surfaces both have a combination of tongues and grooves.
Claim 13
Dependent Claim
22 words
The paving unit according to claim 1 wherein the top surface of the paving unit includes an at least partly reflective surface.
Claim 14
Dependent Claim
31 words
The paving unit according to claim 12 wherein the reflective surface is provided by the application of an at least partially reflective layer to the top surface of the paving unit.
Claim 15
Dependent Claim
16 words
The paving unit according to claim 1 wherein the paving unit includes a noise reducing agent.
Claim 16
Dependent Claim
24 words
The paving unit according to claim 14 wherein the noise reducing agent is provided in part by chamfering the edges of the paving unit.
Claim 17
Dependent Claim
30 words
A pavement comprising an array of paving units according to claim 1 , said paving units being interlocked by said groove and tongue arrangement to form a substantially congruous pavement.
Claim 18
Dependent Claim
20 words
The pavement according to claim 16 wherein the paving units are arranged with complementary side surfaces adjacent to one another.
Claim 19
Dependent Claim
16 words
The pavement according to claim 16 wherein the paving units are arranged in a herringbone pattern.
Claim 20
Dependent Claim
42 words
A method for laying a plurality of paving units as claimed in claim 1 , the method comprising the step of interlocking said paving units in a final laying pattern to form a layer on a pallet and mechanically laying the layer.
Claim 21
Dependent Claim
29 words
The method according to claim 19 , further including the step of interengaging edges of adjacent layers from the pallets during the mechanical laying step to form a pavement.
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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) | 2009-01-23 | 2009-07-25 | 2010-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2013-01-23 | 2013-07-25 | 2014-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2017-01-23 | 2017-07-25 | 2018-01-24 | $7700.00 | Window Closed / Lapsed |