Patent US6471440B1 successfully refreshed from Google Patents.
US6471440B1
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US
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Paving stone
Assignee: Individual
•
Filing: 1999-08-12
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Granted: 2002-10-29
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Expires: 2019-08-12
Abstract
Abstract A paving stone ( 1 ) has a linkage securing against displacement. This is achieved by overengaging interlocking elements ( 6 ) and underengaging interlocking elements ( 5 ) being respectively provided on each side ( 3, 4 ) of the paving stone ( 1 ).
Inventors
- 👤 Rolf Scheiwiller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:12
CPC Classifications
E; E01; E01C; E01C11/00; E01C11/22; E01C11/224; E01C11/225; E01C5/00; E01C5/06; E01C2201/00; E01C2201/02; E01C2201/12; E01C2201/20; E01C2201/202; E01C2201/207; Y; Y02; Y02A; Y02A30/00; Y02A30/60
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
207 words
A paving stone comprising: an upper surface; side walls perpendicular to the upper surface, at least a first side wall of the side walls having at least one underengaging lug projecting therefrom, wherein the at least one underengaging lug has a face surface parallel to the first side wall and edge surfaces joining the face surface, the underengaging lug having a trapezoidal-shaped cross section taken perpendicular to the face surface with first and second of the edge surfaces being parallel to each other and third and fourth of the edge surfaces inclined toward each other relative to the direction of the upper surface, and at least a second side wall of the side walls having at least one overengaging lug, wherein the at least one overengaging lug has a face surface parallel to the second side wall and edge surfaces joining the face surface, with two of the edge surfaces being inclined away from each other relative to the direction of the upper surface, wherein the underengaging lug and the overengaging lug form a vertical interlocking system when the underengaging lug engages with an overengaging lug of a first adjacent paving stone and the overengaging lug engages with an underengaging lug of a second adjacent paving stone.
Claim 2
Dependent Claim
207 words
A paving stone comprising: an upper surface; side walls perpendicular to the upper surface, at least a first side wall of the side walls having at least one underengaging lug projecting therefrom, wherein the at least one underengaging lug has a face surface parallel to the first side wall and edge surfaces joining the face surface, the underengaging lug having a trapezoidal-shaped cross section taken perpendicular to the face surface with first and second of the edge surfaces being parallel to each other and third and fourth of the edge surfaces inclined toward each other relative to the direction of the upper surface, and at least a second side wall of the side walls having at least one overengaging lug, wherein the at least one overengaging lug has a face surface parallel to the second side wall and edge surfaces joining the face surface, with two of the edge surfaces being inclined away from each other relative to the direction of the upper surface, wherein the underengaging lug and the overengaging lug form a vertical interlocking system when the underengaging lug engages with an overengaging lug of a first adjacent paving stone and the overengaging lug engages with an underengaging lug of a second adjacent paving stone.
Claim 3
Dependent Claim
92 words
The paving stone according to claim 1 , wherein: the first side wall has only multiple underengaging lugs projecting therefrom, wherein each of the underengaging lugs has a face surface parallel to the first side wall and edge surfaces joining the face surface, each of the underengaging lugs having a trapezoidal-shaped cross section taken perpendicular to the face surface with first and second of the edge surfaces being parallel to each other and third and fourth of the edge surfaces inclined toward each other relative to the direction of the upper surface.
Claim 4
Dependent Claim
62 words
The paving stone according to claim 1 , wherein: the second side wall has only multiple overengaging lugs, wherein each of the overengaging lugs has a face surface parallel to the second side wall and edge surfaces joining the second side wall, with two of the edge surfaces being inclined away from each other relative to the direction of the upper surface.
Claim 5
Dependent Claim
98 words
The paving stone according to claim 1 , wherein: at least a third side wall of the side walls has at least one underengaging lug projecting therefrom, wherein the at least one underengaging lug has a face surface parallel to the first side wall and edge surfaces joining the face surface, the underengaging lug having a trapezoidal-shaped cross section taken perpendicular to the face surface with first and second of the edge surfaces being parallel to each other and third and fourth of the edge surfaces inclined toward each other relative to the direction of the upper surface.
Claim 6
Dependent Claim
83 words
The paving stone according to claim 1 , wherein: at least a third side wall of the side walls has at least one overengaging lug, wherein the at least one overengaging lug has a face surface parallel to the third side wall and edge surfaces joining the third side wall, with two of the edge surfaces inclined away from each other relative to the direction of the upper surface, wherein the third side wall is orthogonal to and adjacent the second side wall.
Claim 7
Dependent Claim
45 words
The paving stone according to claim 1 , wherein pockets for joint material are formed when the underengaging lug engages with an overengaging lug of a first adjacent paving stone and the overengaging lug engages with an underengaging lug of a second adjacent paving stone.
Claim 8
Dependent Claim
38 words
The paving stone according to claim 1 , wherein the edge surfaces of the at least one overengaging lug include at least two additional edge surfaces inclined toward each other relative to the direction of the upper surface.
Claim 9
Dependent Claim
17 words
The paving stone according to claim 7 , wherein the two additional edge surfaces intersect each other.
Claim 10
Dependent Claim
45 words
The paving stone according to claim 1 , wherein the first edge surface of the at least one underengaging lug is parallel to the upper surface and the third and fourth edge surfaces of the underengaging lug form obtuse angles with the first edge surface.
Claim 11
Dependent Claim
26 words
The paving stone according to claim 1 , wherein a first of the two edge surfaces of the overengaging lug is orthogonal to the upper surface.
Claim 12
Dependent Claim
25 words
The paving stone according to claim 1 , wherein neither of the two edge surfaces of the overengaging lug is orthogonal to the upper surface.
Claim 13
Dependent Claim
206 words
A paving stone comprising: an upper surface; side walls perpendicular to the upper surface; at least a first side wall of the side walls having at least one underengaging lug projecting therefrom, wherein the at least one underengaging lug has a face surface parallel to the first side wall and edge surfaces joining the face surface, the underengaging lug having a trapezoidal-shaped cross section taken perpendicular to the face surface with first and second of the edge surfaces being parallel to each other and third and fourth of the edge surfaces inclined toward each other relative to the direction of the upper surface, and at least a second side wall of the side walls having at least one overengaging setback, wherein the at least one overengaging setback has a face surface parallel to the second side wall and edge surfaces joining the face surface, with two of the edge surfaces being inclined toward each other relative to the direction of the upper surface; wherein the underengaging lug and the overengaging setback form a vertical interlocking system when the underengaging lug engages with an overengaging setback of a first adjacent paving stone and the overengaging setback engages with an underengaging lug of a second adjacent paving stone.
Claim 14
Dependent Claim
206 words
A paving stone comprising: an upper surface; side walls perpendicular to the upper surface; at least a first side wall of the side walls having at least one underengaging lug projecting therefrom, wherein the at least one underengaging lug has a face surface parallel to the first side wall and edge surfaces joining the face surface, the underengaging lug having a trapezoidal-shaped cross section taken perpendicular to the face surface with first and second of the edge surfaces being parallel to each other and third and fourth of the edge surfaces inclined toward each other relative to the direction of the upper surface, and at least a second side wall of the side walls having at least one overengaging setback, wherein the at least one overengaging setback has a face surface parallel to the second side wall and edge surfaces joining the face surface, with two of the edge surfaces being inclined toward each other relative to the direction of the upper surface; wherein the underengaging lug and the overengaging setback form a vertical interlocking system when the underengaging lug engages with an overengaging setback of a first adjacent paving stone and the overengaging setback engages with an underengaging lug of a second adjacent paving stone.
Claim 15
Dependent Claim
92 words
The paving stone according to claim 12 , wherein: the first side wall has only multiple underengaging lugs projecting therefrom, wherein each of the underengaging lugs has a face surface parallel to the first side wall and edge surfaces joining the face surface, each of the underengaging lugs having a trapezoidal-shaped cross section taken perpendicular to the face surface with first and second of the edge surfaces being parallel to each other and third and fourth of the edge surfaces inclined toward each other relative to the direction of the upper surface.
Claim 16
Dependent Claim
61 words
The paving stone according to claim 12 , wherein: the second side wall has only multiple overengaging setbacks, wherein each of the overengaging setbacks has a face surface parallel to the second side wall and edge surfaces joining the face surface, with two of the edge surfaces being inclined away from each other relative to the direction of the upper surface.
Claim 17
Dependent Claim
97 words
The paving stone according to claim 12 wherein: at least a third side wall of the side walls has at least one underengaging lug projecting therefrom, wherein the at least one underengaging lug has a face surface parallel to the first side wall and edge surfaces joining the face surface, the underengaging lug having a trapezoidal-shaped cross section taken perpendicular to the face surface with first and second of the edge surfaces being parallel to each other and third and fourth of the edge surfaces inclined toward each other relative to the direction of the upper surface.
Claim 18
Dependent Claim
81 words
The paving stone according to claim 12 wherein: at least a third side wall of the side walls has at least one overengaging setback, wherein the at least one overengaging setback has a face surface parallel to the third side wall and edge surfaces joining the face surface, with two of the edge surfaces inclined away from each other relative to the direction of the upper surface, wherein the third side wall is orthogonal to and adjacent the second side wall.
Claim 19
Dependent Claim
23 words
The paving stone according to claim 12 , wherein the first edge surface of the underengaging lug is parallel to the upper surface.
Claim 20
Dependent Claim
27 words
The paving stone according to claim 17 , wherein the third and fourth edge surfaces of the underengaging lug form obtuse angles with the first edge surface.
Claim 21
Dependent Claim
24 words
The paving stone according to claim 17 , wherein the third edge surface of the underengaging lug is orthogonal to the first edge surface.
Claim 22
Dependent Claim
26 words
The paving stone according to claim 12 , wherein a first of the two edge surfaces of the overengaging lug is orthogonal to the upper surface.
Claim 23
Dependent Claim
25 words
The paving stone according to claim 12 , wherein neither of the two edge surfaces of the overengaging lug is orthogonal to the upper surface.
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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) | 2005-10-28 | 2006-04-29 | 2006-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-10-28 | 2010-04-29 | 2010-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-10-28 | 2014-04-29 | 2014-10-29 | $7700.00 | Window Closed / Lapsed |