| 摘要 |
An improved operator tor a window comprising a base and a cover, the base being attached to a window sash with an aperture extending through the base, an arm having first and second ends with a first end secured to the base, the first arm having an aperture therein overlying the aperture in the base and an upper securement member extending at least partially through the aperture in the first end of the arm, the securement member having a threaded recess therein, a lower securement member screwthreadedly engaged with the upper securement member and extending through the base in an abutting relationship thereto, the cover engaging with the upper securement member to prevent rotation thereof when the lower securement member is screwthreadedly engaged therewith. |
