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:
Mar. 09, 2004
Filed:
Sep. 05, 2002
Gi Won Seo, Guro-gu, Seoul, KR;
Other;
Abstract
Disclosed is a hot air welder that consecutively joins sheets of synthetic resin material together to make a large-sized pavilion or a tent fabric, or welds and seals the seam lines of waterproof textiles or the like for waterproofing process. Instead of the conventional table-shaped body, there are provided an upright-standing drive body; hot-air welding means on an upper-side of the drive body; upper and lower drive rollers under the welding means, and wherein the welding work is performed by rotating and using alternatively the upper drive roller or the lower drive roller, according to the kind of fabrics to be welded and the work-substances. Therefore the heat welding and waterproofing process may be performed more easily for more various shaped work-substances, and that the troublesome work-substances such as sleeve or shoulder parts of waterproof clothes that have various positioned and shaped seam lines may be moved and rotated easily by the worker to be heat-welded and become waterproofed.