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US 9,315,950 B2Granted
Paving stones
AssigneeOldcastle Architectural, Inc.
InventorsLeonard Browning, Robert J. Lundell
Life of this patent
Estimating the term…
Abstract
Generally L-shaped, square, rectangular, triangular, hexagonal, parallelogram and other-shaped paving stones with inter-fitting vertical spacers forming serpentine side contact surfaces that provide enhanced stone-to-stone interlocking in both water-permeable and water-impermeable paving installations.
Claims20
An assembly of dry-cast concrete pavers arranged on a permeable substrate,
- wherein each paver comprises:
- a. generally planer, generally parallel top and bottom surfaces,
- b. generally planer vertical walls perpendicular to the top and bottom surfaces, and
- c. a pair of vertically extending spacers protruding from at least one vertical wall, wherein each spacer comprises:
- i. two planer surfaces arranged at approximately 90 degrees to each other and arranged at an outside angle of approximately 135 degrees relative to the vertical wall,
- ii. wherein the two planer surfaces form a triangular portion that protrudes from the vertical wall, wherein the triangular portion comprises a rounded point having a radius of 10 mm or less,
- iii. wherein a distance from the vertical wall to the rounded point is approximately 8.5 mm,
- wherein at least two pavers are arranged in an abutting relationship so that the pair of spacers protruding from the vertical wall of the first paver inter-fit with the pair of spacers protruding from the vertical wall of the second paver,
- wherein adjacent planer surfaces of the inter-fit spacers are in frictional contact with each other to vertically, horizontally, and rotationally interlock the abutting pavers.
6 more elements
An assembly of dry-cast concrete pavers arranged on a permeable substrate,
- wherein each paver comprises:
- a generally polygonal body;
- a pair of generally congruent first and second walls extending radially from a first vertex of the polygonal body and being rotationally spaced from each other by an interior angle greater than 180° so that the first vertex is concave;
- and
- a pair of vertically extending spacers protruding from the first wall and the second wall, wherein each spacer comprises:
- two planer surfaces arranged at approximately 90 degrees to each other and arranged at an outside angle of approximately 135 degrees relative to the vertical wall,
- wherein the two planer surfaces form a triangular portion that protrudes from the vertical wall, wherein the triangular portion comprises a rounded point having a radius of 10 mm or less,
- wherein at least two pavers are arranged in an abutting relationship so that the pair of spacers protruding from the first wall of the first paver inter-fit with the pair of spacers protruding from the first wall of the second paver,
- wherein adjacent planer surfaces of the inter-fit spacers are in frictional contact with each other to vertically, horizontally, and rotationally interlock the abutting pavers.
6 more elements
Dependencies are inferred from the claim text.