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:
Apr. 11, 2000
Filed:
Feb. 11, 1998
Harry L Nurse, Jr, Louisville, KY (US);
Other;
Abstract
A riser for use with an access opening in a waste water treatment tank is mounted in a top opening in the waste water treatment tank. The riser includes a top portion and an integral bottom portion wherein the top portion is provided with a downwardly extending side wall and the bottom portion is provided with a downwardly extending skirt. The bottom portion is provided with an inner diameter greater than the outer diameter of the top portion and a ring connects the bottom portion to the top portion. The bottom portion is also provided with an inwardly extending flange having an inner terminating end engagable with the outer surface of the top portion. The top portion is provided with lugs at circumferentially spaced positions for engaging relation with slots in the flange portion for connecting adjacent risers in tandem. A plurality of risers may be connected to each other and in turn, the bottommost riser is connectable to the access opening and the uppermost riser is connectable to a cover usually at ground surface.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile