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:
Feb. 02, 1982
Filed:
Apr. 22, 1980
Robert Walker, Pawtucket, RI (US);
Joseph A Lane, Tauton, MA (US);
Amtrol Inc., West Warwick, RI (US);
Abstract
A metallic tank having an insulated interior is disclosed which exhibits unique features to enable the welding of the tank sections together without damage to the insulation. The insulating lining is installed in the multi-piece metallic tank prior to the welding of the tank sections together. A heat shield is provided between the weld area and the insulating liner to prevent damage to the nonmetallic liner during the welding process. The method of assembly allows the economical and rapid fabrication of lined metallic tanks without fear of damaging the lining material. Also, an indirect fired water heater which has a tube heat exchanger in the lined metal tank with the heat shield. The inlet and exit lines of the heat exchanger pass through a bottom plate of the tank. The tank, in such case, contains potable water which is heated by contact with the heat exchanger located within the vessel. Hot boiler water passes through the heat exchanger to heat the water in the vessel. Fittings installed through the top and/or bottom portion of the vessel wall facilitate the drawing off of the heated water and the filling of the vessel with cold water.