Molds for producing concrete blocks with roughened surfaces; blocks made therefrom; and methods of use

Patent metadata

Field	Value
Publication number	US-9259853-B2
Application number	US-201113019744-A
Country	US
Kind code	B2
Filing date	Feb 2, 2011
Priority date	Feb 2, 2011
Publication date	Feb 16, 2016
Grant date	Feb 16, 2016

Abstract

A mold for making dry cast concrete blocks includes a pair of vertical shoulder forming sections, one along each of the opposite sides of the mold to form vertical front shoulders of a block. Each shoulder forming section has a shoulder roughening arrangement to result in molded, roughened shoulders of the block. Methods of making such blocks and the resulting block are included.

First claim

We claim:

1. A mold for making dry cast concrete blocks with rounded front vertical shoulders, the mold comprising:
opposed sidewalls, opposed end walls, an open top and bottom, and a lower edge,
a pair of vertical shoulder forming sections, one along each of the sidewalls across the mold from each other, each shoulder forming section being concave about a vertical axis and the shoulder forming sections being in positions to form the rounded front vertical shoulders of each of the blocks made in the mold, each shoulder forming section having a recess starting adjacent the lower edge of the mold and extending upward between about 25% and about 50% of the height of the mold,
at least two spaced ribs formed in each of the recesses, each rib extending in a direction across the width of the recess and being inclined relative to both the vertical axis and the width of the recess, the at least two spaced ribs together extending across the width of the recess.

2. The mold of claim 1 wherein each rib extends downward toward the bottom of the mold as it extends from one edge of the recess toward the other edge of the recess.

3. The mold of claim 2 wherein the height of each recess is about 50% of the height of the mold.

4. The mold of claim 1 wherein the ribs in each recess are parallel.

5. The mold of claim 1 for forming two face to face concrete blocks, wherein there are two adjacent vertical shoulder forming sections midway along each of the sidewalls of the mold midway between the end walls of the mold, the adjacent vertical shoulder forming sections being concave about parallel vertical axes and facing opposite end walls of the mold to form a rounded vertical front shoulder on each of the two face to face blocks.

6. The mold of claim 5 wherein there each rib extends downward toward the bottom of the mold as it extends from one edge of the recess toward the other edge of the recess.

7. The mold of claim 5 wherein the height of each recess is about 50% of the height of the mold.

8. The mold of claim 5 wherein the ribs in each recess are parallel.

Assignees

• Johnson Jay
• Hernandez Lech W
• Johnson Paul
• Lidbom Michael
• Anchor Wall Syst

Inventors

• Johnson Jay
• Hernandez Lech W
• Johnson Paul
• Lidbom Michael

Classifications

• B28B17/0027

  Accessories for obtaining rubblestones · CPC title

• B28B7/366

  Replaceable lining plates for press mould · CPC title

• B28B7/007 Primary

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

• B44F9/04

  of stone surfaces, e.g. marble · CPC title

• E04B2/14

  Walls having cavities in, but not between, the elements, i.e. each cavity being enclosed by at least four sides forming part of one single element · CPC title