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:
Jun. 25, 1991
Filed:
Jul. 29, 1990
Michael S Butkovich, Aurora, IL (US);
Gerard V LaLonde, Naperville, IL (US);
Irwin Ginsburgh, Newhall, CA (US);
Amoco Corporation, Chicago, IL (US);
Abstract
The anti-theft device for use in a liquid storage tank having an opening in an upper wall of the tank for receiving and mounting an access fill pipe which receives therein a drop tube having an access port. The anti-theft device comprises a mounting ring; a plug; a truncated porous hollow cone having a larger upper end fixed to the mounting ring and a smaller lower end fixed to the plug which is disposed generally concentric with the elongate axis of the drop tube. The plug may also be provided with a shaped key-way opening to allow gauging of liquid contents of a storage tank with a gauge level stick. The mounting ring of the truncated porous hollow cone is attached to the drop tube within the access fill pipe at a point below the access port of the drop tube and above the upper wall of the storage tank. The key-way opening of the plug can be T-shaped, cross-shape, C-shape, or of a circular-shape.