E - Fixed Constructions – 04 – B
Patent
E - Fixed Constructions
04
B
26/184, 20/56
E04B 1/36 (2006.01) B29C 65/02 (2006.01) E04D 13/14 (2006.01)
Patent
CA 1299833
METHOD OF FABRICATING POLYMER-COATED FABRIC OUTSIDE CORNER PIECES FOR SINGLE-PLY POLYMER-COATED FABRIC CORE ROOF MEMBRANES AND THE PRODUCT THEREBY FORMED ABSTRACT OF THE DISCLOSURE A method of fabricating polymer-coated, fabric corner members for the integrated enclosures provided for projecting products such as air conditioners on unitary roof membranes. The corners have vertical walls forming a corner, comprising forming a first generally rectangular membrane segment with a side split part way, forming a second segment with a triangular-shaped corner portion, spreading the split edges of the first segment with an elongate male die part, placing the second segment over the male die part, and utilizing an elongate female die part having flat welding edges to retain the marginal edges of the second segment in engagement with the edges of the first segment contiguous to the split, and applying energy to heat-weld the lapped edges of the first and second segments. The corner piece formed is placed in position with portions of the first segment, forming vertical wall covers folded to form a corner and the remaining portions of the segment and the second segment lying flat in the general plane of the roof membrane. The flat lying portions of the corner piece are welded to the roof membrane. Spanning strips join the vertical wall portion and have flat extensions which are likewise welded to the roof membrane.
572630
Blake Cassels & Graydon Llp
Duro-Last Inc.
LandOfFree
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