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:
May. 02, 1978
Filed:
Mar. 10, 1977
John N Lang, Pittsburgh, PA (US);
Other;
Abstract
A burner that has flat upper and lower walls connected by side walls and a front end wall is provided with a fuel inlet for connection to a fuel source and with an open rear end. A device is connected to one side of the burner for inserting it between the overlapping layers of a lap joint of fusible roofing sheets for sliding it forward along the joint while flame issues from the rear end of the burner to fuse the overlapping layers together. Preferably, a roller follows the burner to press the hot layers of the joint together. A second burner may be provided which is opposite hand to the first burner and which is held in an elevated position as long as the first burner is in operating position.