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US 12,311,575 B2Granted
Apparatus for making a masonry block with a roughened surface
AssigneePavestone, LLC
InventorWilliam H. Karau
Life of this patent
Estimating the term…
Abstract
An apparatus comprising a substantially smooth internal mold surface forming a cavity and one or more roughened sections of the substantially smooth internal mold surface having a plurality of irregular grooves, wherein each roughened section is inclined with a wider base and a narrower top.
Claims20
An apparatus comprising:
- a substantially smooth internal mold surface forming a cavity;
- and
- one or more roughened sections of the substantially smooth internal mold surface having a plurality of irregular grooves, wherein each roughened section is disposed between a wider planar base and a narrower planar top, with an inclination between the wider planar base and the narrower planar top sufficient to allow debris to accumulate.
Dependencies are inferred from the claim text.