| 摘要 |
Mechanism for installing and holding a thermoweldable curved element (3) to another thermoweldable curved element (1) characterised in that it consists in a strap system (5), one end of which is attached to a fixed point (4) of the first thermoweldable element, and the other is submitted, after going around the periphery of the second thermoweldable element, to a progressive traction by a stretcher consisting in a manoeuvre lever (10) which turns a roll (9) which drives the strap in the tensile direction, a pawl (13) blocking a ratchet wheel (12) preventing the roll from turning in the wrong direction, the frame (20) of this strap system being supported by a rim (4') on the first thermoweldable element opposite the rim (4) to which is attached the loop (8) that ends the strap (5), so as to balance the pressure put on the strap and to spread it out evenly along the whole periphery of the second thermoweldable element. <IMAGE> |
