Twisted block
AssigneeKeystone Retaining Wall Systems, Inc.
InventorsRobert A. MacDonald, Thomas S. Riccobene
Life of this patent
Estimating the term…
Abstract
A block suitable for use in paving, edging or wall applications comprises a lower portion having parallel, substantially vertical side faces that are spaced apart by a first width, and an upper portion having parallel, substantially vertical side faces that are spaced apart by a second width. The second width is smaller than the first width of the lower portion, and the side faces of the upper portion are angled relative to the side faces of the lower portion. The block further comprises a transition portion between the upper and lower portions, having at least one slanted side extending between one or more sides of the lower portion and one or more sides, respectively, of the upper portion.
Claims20
A block suitable for use in paving, edging or wall applications, the block comprising:
- a lower portion having parallel side faces that are spaced apart by a first width, and the lower portion having opposed end faces;
- an upper portion having parallel side surfaces that are spaced apart by a second width, the second width being smaller than the first width of the lower portion, the side surfaces of the upper portion being angled relative to the side faces of the lower portion, the upper portion having opposed end surfaces, and the upper portion including a top surface of the block;
- and
- a transition portion between the upper and lower portions having at least one slanted side surface extending between one or more side faces of the lower portion and one or more side surfaces, respectively, of the upper portion,
- wherein lower edges of the side and end faces of the lower portion generally define a first quadrilateral in plan view, and upper edges of the side and end surfaces of the upper portion generally define a second quadrilateral in plan view, and wherein the lower edges of the side and end faces of the lower portion are non-parallel to the upper edges of the side and end surfaces of the upper portion.
A block suitable for use in paving, edging or wall applications, the block comprising:
- a lower portion having parallel side faces that are spaced apart by a first width;
- an upper portion having parallel side surfaces that are spaced apart by a second width, the second width being smaller than the first width of the lower portion, the side surfaces of the upper portion being angled relative to the side faces of the lower portion, the upper portion including a top surface of the block;
- and
- a transition portion between the upper and lower portions having at least one slanted side surface extending between one or more side faces of the lower portion and one or more side surfaces, respectively, of the upper portion,
- wherein the lower portion includes first and second end faces extending between the lower portion side faces, and the upper portion includes first and second end surfaces extending between the upper portion side surfaces;
- wherein the transition portion further comprises additional slanted side surfaces extending between the first and second end faces of the lower portion and the first and second end surfaces of the upper portion.
Dependencies are inferred from the claim text.