Retaining wall block and drainage system

Details Retaining wall block and drainage system Retaining wall block and drainage system

2005-03-29

2005-03-29

Will, Thomas B. (Department: 3671)

Hydraulic and earth engineering

Earth treatment or control

Shoring, bracing, or cave-in prevention

C405S036000, C405S262000, C052S606000

Reexamination Certificate

active

06872032

ABSTRACT:
A retaining-wall block has a set of liquid impervious walls defining a completely bounded cavity having a sealable opening for filling the cavity with a fill material to add weight, and a seal element for sealing the sealable opening. In some cases the block has a second cavity with openings for collecting liquid and for passing collected liquid out of the second cavity to adjacent blocks in an assembly.

REFERENCES:
patent: 3965686 (1976-06-01), Saito et al.
patent: 4881846 (1989-11-01), Burkstaller
patent: 5306317 (1994-04-01), Yoshizaki
patent: 5567077 (1996-10-01), Yang
patent: 5634741 (1997-06-01), Tremblay et al.
patent: 5752784 (1998-05-01), Motz et al.
patent: 5938372 (1999-08-01), Lichfield
patent: 6312190 (2001-11-01), Goughnour
patent: 6481934 (2002-11-01), Alexiew
patent: 6691472 (2004-02-01), Hubert

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