The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 09, 2003
Filed:
Jun. 07, 2001
Applicant:
Inventors:
Robert A. MacDonald, Plymouth, MN (US);
Robert J. Race, Eagan, MN (US);
Assignee:
Keystone Retaining Wall Systems, Inc., Bloomington, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E04B 5/04 ;
U.S. Cl.
CPC ...
E04B 5/04 ;
Abstract
A retaining wall block is provided with a core, pin receiving cavities, and pin holes. The pin receiving cavities and pin holes are arranged on the block symmetrically on the block and substantially outside of block corner segments, thus resulting in a stronger block and permitting optimal alignment of the wall block cores when constructing a retaining wall. Retaining walls made using the block have increased strength.