Block with multifaceted bottom surface

Details Block with multifaceted bottom surface Block with multifaceted bottom surface

2005-06-28

2005-06-28

Hartmann, Gary S. (Department: 3671)

Hydraulic and earth engineering

Earth treatment or control

Shoring, bracing, or cave-in prevention

C052S604000, C052S605000, C052S608000

Reexamination Certificate

active

06910833

ABSTRACT:
A block for use in constructing a retaining wall. The block has a bottom with a non-planar portion that forms a gap between the block and the top surface of a lower course of similar blocks when the block is placed thereon. This gap allows the block to rest on the lower course of blocks in a stable, level manner by providing a space that can accommodate small amounts of intrusive material such as rubble, dirt, or miscellaneous debris which would otherwise interfere with the stacking of the blocks. The block's bottom may also include a plurality of grooves that provide additional clearance in the gap for larger bits of intrusive material such as pebbles or small stones. Preferably, the grooves have angled walls which act to funnel the larger bits of intrusive material into an area of adequate clearance when the block is being placed on a lower course of similar blocks.

REFERENCES:
patent: 572762 (1896-12-01), Landers
patent: D31267 (1899-07-01), Bates
patent: 4936712 (1990-06-01), Glickman
patent: D311444 (1990-10-01), Forsberg
patent: D313280 (1990-12-01), Rodenburgh et al.
patent: 5072566 (1991-12-01), Zeidman
patent: 5281048 (1994-01-01), Hagenah
patent: 5622456 (1997-04-01), Risi et al.
patent: 5827015 (1998-10-01), Woolford et al.
patent: 5943827 (1999-08-01), Okerlund
patent: 6178715 (2001-01-01), Pacitto et al.
patent: 6250850 (2001-06-01), Price et al.
patent: 6592301 (2003-07-01), Price et al.

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