| 摘要 |
A window operator, particularly, operators for venting casement windows is provided. The base housing of the operator is of a plastic polymer, which is a non-corrosive and non-thermal conducting material. The top and bottom base components are then sonic welded with a heat-treated steel worm gear welded inside of the plastic base of the window operator creating a one-piece assembly. The worm gear and pinion gear with attached operator arm are placed within the base body before fusion welding the top body. The use of the plastic polymer for the base housing eliminates the possibility of corrosion of the base material. Also, the polymer does not require finishing or painting to protect it from corrosion.
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