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:
Dec. 29, 1998
Filed:
Jul. 01, 1997
Applicant:
Inventor:
James J Hopper, II, Wichita, KS (US);
Assignee:
Balco Metalines, Inc., Wichita, KS (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E04F / ;
U.S. Cl.
CPC ...
52177 ; 52667 ; 52669 ;
Abstract
An entry grid includes a plurality of spaced, side-by-side, grid sections each having a tread rail and a depending support leg with sections interlocked by a locking bar extending transversely through respective locking holes in the support legs. The support legs include locking teeth engaged by complementally configured element teeth of corresponding locking elements extending radially from the locking bar shaft.