Block, block system and method of making a block

Patent metadata

Field	Value
Publication number	US-11958211-B2
Application number	US-202218055102-A
Country	US
Kind code	B2
Filing date	Nov 14, 2022
Priority date	Sep 26, 2013
Publication date	Apr 16, 2024
Grant date	Apr 16, 2024

Abstract

A block, block system and method of making a wall block. A block with multiple embodiments of a visually exposed surface having three dimensional shaped areas and three dimensional angular valleys or joints that can be used to construct a patio, wall, fence or the like; the multiple embodiments creating a more random and natural appearance. A mold box having a moveable liner and a stripper shoe that impart three dimensional shaped areas and three dimensional angular valleys or joints onto an exposed surface of a block. The moveable liner and stripper shoe also impart a parting line onto the exposed surface of the block.

First claim

What is claimed is:

1. A method to produce blocks, the method comprising:
positioning a production pallet beneath a mold box to enclose a bottom of a mold cavity; wherein the mold box includes opposed side walls and opposed front and rear walls which together form a perimeter of the mold cavity shaped to form a block, the mold cavity having an open top and an open bottom;
depositing block forming material into the mold cavity; and compressing the block forming material within the mold cavity to form a block by lowering a stripper shoe to enclose the open top of the mold cavity, wherein, in an installed orientation, the block includes an outward-facing front face that is adjacent to a top irregular surface and to first and second irregular side surfaces, the stripper shoe having an irregular molding surface shaped for forming the top irregular surface of the block and contoured molding surfaces shaped for forming a first portion of the outward-facing front face and a first portion of the first and second irregular side surfaces of the block, wherein a transition between the first portion of the outward-facing front face and the first portion of the first and second irregular side surfaces of the block formed by the stripper shoe and the remaining portions of the outward facing front face is irregular and nonlinear; and
removing the block forming material from the at least one mold cavity after moving the front wall to the retracted position.

2. The method of claim 1 , wherein the contoured molding surface of the stripper shoe includes an irregular front edge which is non-linear horizontally and vertically.

3. The method of claim 1 , wherein the opposed side walls and the front wall include respective contoured molding surfaces shaped to form the remaining portion of the first and second irregular side walls and the outward-facing front face of the block.

4. The method of claim 3 , further comprising extending at least a portion of the contoured molding surfaces of the stripper shoe further into the mold cavity than the irregular molding surface of the stripper shoe.

5. The method of claim 3 , wherein the contoured molding surfaces of the stripper shoe include a projecting ridge shaped to extend into the mold cavity to impart a first section of a false joint into the first portion of the outward-facing front face and the first portions of the first and second irregular side faces of the block and the contoured molding surfaces of the opposed side walls and the front wall includes respective projecting ridges shaped to extend into the mold cavity to impart a second section of the false joint into the remaining portion of the first and second irregular side faces and the outward-facing front face of the block.

6. The method of claim 1 , wherein the outward-facing front wall is adjacent the opposed irregular side walls along first and second non-linear side edges, such that in a front view of a block formed in the at least one mold cavity a front face of the block has a shape that is not rectangular.

7. The method of claim 1 , wherein the front wall of the mold box is stationary while forming the block.

8. The method of claim 1 , wherein the front wall of the mold box moves to a forming position while forming the block.

9. The method of claim 1 , wherein the opposing side walls of the mold box are stationary while forming the block.

10. The method of claim 1 , wherein the opposing side walls of the mold box move to a forming position while forming the block.

Assignees

• Keystone Retaining Wall Systems Llc

Inventors

• Macdonald Robert A
• Riccobene Thomas S

Classifications

• B28B7/0097 Primary

  Press moulds; Press-mould and press-ram assemblies · CPC title

• B28B3/00

  Producing shaped articles from the material by using presses (shaping on moving conveyors B28B5/00); Presses specially adapted therefor (presses in general B30B) · CPC title

• B28B3/021

  Ram heads of special form · CPC title

• B28B7/0041

  the sidewalls of the mould being moved only parallelly away from the sidewalls of the moulded article · CPC title

• B28B7/007

  with moulding surfaces simulating natural effets, e.g. wood or stone · CPC title