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:
May. 04, 1999
Filed:
Jul. 27, 1998
Applicant:
Inventors:
Joseph V Milo, Rockaway Boro, NJ (US);
Martin C Pettesch, Cranford, NJ (US);
Assignee:
Universal Valve Co., Inc., Elizabeth, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E02D / ;
U.S. Cl.
CPC ...
404 25 ; 52 20 ;
Abstract
A manhole embodiment that includes a metal top ring, metal removable cover, and a flexible sheet steel skirt welded to the top ring. The skirt has a stiffening and footing flange rolled laterally inwardly or outwardly from the bottom rim of the skirt to increase the manhole lateral strength and provide a footing for the very bottom of the manhole.