E - Fixed Constructions – 04 – F
Patent
E - Fixed Constructions
04
F
E04F 11/00 (2006.01) B29C 65/54 (2006.01) E04F 11/16 (2006.01)
Patent
CA 2149981
A staircase of monocoque construction comprises a pair of stringers, a series of successive and alternating treads and risers and nosings which are all made of solid wood or of composite wood such as O.S.B., pyrock, plywood, particle board, etc. At locations where these various components are to be joined, the components define facing grooves with a tapered space being also defined between the components. A gap filling substance, such as a polyester resin reinforced with micro-glass fibers, injected in the large ends of the tapered spaces fills the grooves as well as the tapered spaces adhesively joins when it hardens the treads and risers one to another in succession, and also adhesively join the stringers and the nosings to the treads and risers. The hardened resin "welds" the wooden components one to another and thereby acting as a welded mechanical key, whereby the assembled structure forms a monocoque staircase. A method is also suggested to produce a monocoque staircase. Also, the invention concerns a method for joining as a weld a pair of wooden components in a monocoque assembly by defining facing grooves in the components and by providing a wedged space therebetween; then, a gap filling and adhesive resin is disposed in the grooves and in the spaces which, as it sets, resembles a welded key so as to join the components together in a monocoque assembly.
Couture Raymond
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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