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. 04, 1984
Filed:
Sep. 14, 1981
Peter J Petrecca, Atlanta, GA (US);
Nordson Corporation, Amherst, OH (US);
Abstract
An apparatus for melting and dispensing thermoplastic material comprising a melter tank, a pump contained within the melter tank, a dispenser, and a manifold block mounted on the bottom of the melter tank. Thermoplastic material melted in the tank flows from the melter tank through the pump through the manifold block to the dispenser. The melter tank comprises a novel electrical resistance heating element cast into the bottom wall of the tank. The heating element is asymetrically shaped within the bottom wall of the melter tank and is so configured that the length of the heater element within any portion of the bottom wall is proportional to the mass of material, including melter tank, manifold block, pump, and thermoplastic material to be heated by the given length of heater element within that portion. Additionally, the tank side walls are generally triangular in cross section with the thicker part of the triangular shaped side walls located adjacent the bottom of the tank. A portion of the heating element is located directly under each side wall so that heat is effectively conducted from the bottom wall into the side walls, and from the side walls into the thermoplastic material contained within the tank.