US4125341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paving block
Assignee: Individual
•
Filing: 1977-08-26
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Granted: 1978-11-14
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Expires: 1997-08-26
Abstract
Abstract An improved paving block is disclosed. The paving block is of the type which comprises at least four paving elements of equal height seated on a common foot and which has side walls that present convex and concave curvilinear generatrices. A part of the side walls of the block are formed with at least one flat surface so as to provide better stacking, easier laying down and improved mutual engagement of the blocks for enhanced load stability of the finished paving.
Inventors
- 👤 Hans Reinschutz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:16
CPC Classifications
E; E01; E01C; E01C5/00; E01C5/06; E01C2201/00; E01C2201/16
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
82 words
A polygonal paving block having a base, side walls and an upper surface, said upper surface comprising at least four projecting elements, the side walls of said block presenting convex and concave curvilinear generatrices which are disposed substantially entirely in respective parallel planes of the side walls of said block, at least a part of the side walls of the block also forming at least one flat surface lying in a plane parallel to said respective parallel planes of said curvilinear generatrices.
Claim 2
Dependent Claim
82 words
A polygonal paving block having a base, side walls and an upper surface, said upper surface comprising at least four projecting elements, the side walls of said block presenting convex and concave curvilinear generatrices which are disposed substantially entirely in respective parallel planes of the side walls of said block, at least a part of the side walls of the block also forming at least one flat surface lying in a plane parallel to said respective parallel planes of said curvilinear generatrices.
Claim 3
Dependent Claim
15 words
The projecting block according to claim 1, wherein said paving elements are circular-cylindrical in shape.
Claim 4
Dependent Claim
16 words
The paving block according to claim 1, wherein said generatrices are convex and concave cylinder generatrices.
Claim 5
Dependent Claim
26 words
The paving block according to claim 3, wherein said at least one flat surface is rectangular in shape and said projecting elements are circular-cylindrical in shape.
Claim 6
Dependent Claim
27 words
The paving block according to claim 4, wherein concave cylinder generatrices join with both sides of a flat rectangular surface of the side walls at obtuse angles.
Claim 7
Dependent Claim
54 words
The paving block according to claim 4, wherein said at least one flat surface includes small rectangular surfaces which join with both sides of a relatively larger, flat rectangular surface of the side walls at obtuse angles, each of said small rectangular surfaces, in turn, joining one of the concave or convex cylinder generatrices.
Claim 8
Dependent Claim
15 words
The paving block according to claim 4, wherein the paving block is formed of concrete.
Claim 9
Dependent Claim
26 words
The paving block according to claim 4, wherein the plane of said at least one flat surface is parallel to the axes of said projecting elements.
Claim 10
Dependent Claim
16 words
The paving block according to claim 1 comprising at least four projecting elements of equal height.
Claim 11
Dependent Claim
18 words
The paving block according to claim 1, wherein said convex and concave curvilinear generatrices are of different radii.
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) | 1981-11-13 | 1982-05-15 | 1982-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-13 | 1986-05-15 | 1986-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-13 | 1990-05-15 | 1990-11-14 | $7700.00 | Window Closed / Lapsed |