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:
Jul. 16, 2002
Filed:
Mar. 08, 2001
Robert A. Julien, Naperville, IL (US);
John H. Malik, Naperville, IL (US);
Russell-Stanley Corporation, Bridgewater, NJ (US);
Abstract
A one piece thermoplastic tighthead drum having a drum body, a bottom, a top and at least one handling ring, at least one of said top and/or bottom including a raised central section surrounded by an annular groove defined by a groove floor, a first sidewall connecting the groove floor and the raised central section and a second sidewall comprising at least a portion of the handling ring. The drum body, the top and/or bottom having the handling ring associated with it and the handling ring converge in an area of merger, the interior surface of which comprises a smooth undulating surface having at least four radii. The configuration provides a double hinge for minimizing the effects of drop impact in the area of merger.