Apparatus for sealing lap joints of fusible roofing sheets
US4087309A · kind A · utility
Inventor
Key dates
| Filing date | Mar 10, 1977 |
| Grant date | May 2, 1978 |
| Priority date | — |
| Expiry date | Mar 10, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/18
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.