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:
Jan. 19, 1988
Filed:
Jan. 23, 1987
Stephen D McLaughlin, Lincolnville, ME (US);
Other;
Abstract
There is provided a non-flammable pass-through unit for installation in new construction or as a substitute for a removed section of existing flammable wall in a building for the purpose of allowing the safe installation of a heating appliance, such as a wood or coal stove, and which will reduce the required clearances from a heating appliance to the wall in registry with a flue opening in an existing chimney located behind the wall. The unit comprises a frame composed of non-flammable vertical and horizontal galvanized sheet metal mambers. The metal frame defines an opening which, when the frame is installed, is centered on the axis of the chimney flue opening. A heat resistant, non-flammable tunnel is fitted into the opening and is butted against the chimney. A non-flammable sheathing covers the face of the metal frame, the sheathing defining an opening centered on the common axis for receiving a thimble and a stove pipe and adapted, when installed, to have its surface flush and merging with the surface of the flammable wall.