초록 ▼

A face plate or framing member is thermoformed from a continuous length of longitudinal member which has a substantially flat cross section. The member is notched at predetermined locations along its length where the corners of the thermoformed face plate are situated. An enlarged opening at the ape

A face plate or framing member is thermoformed from a continuous length of longitudinal member which has a substantially flat cross section. The member is notched at predetermined locations along its length where the corners of the thermoformed face plate are situated. An enlarged opening at the apex of the notches facilitates and enhances the bending and corner forming of the longitudinal member as the member is bent along its longitudinal axis and along the the substantially flat of the member while maintaining the continuity of the longitudinal member. The thermoformed article prepared is of particular utility as a face plate or frame and may be used to cover and seal the connection such as that between a wall opening and a pre-formed stair module positioned in the wall opening of an inground swimming pool.

대표청구항 ▼

A method of forming a corner in a thermoformable longitudinal facing member having a contoured cross-section while maintaining the continuity of the member as the member is being formed comprising: making a pair of converging cuts partially through and at predetermined space locations in said longit

A method of forming a corner in a thermoformable longitudinal facing member having a contoured cross-section while maintaining the continuity of the member as the member is being formed comprising: making a pair of converging cuts partially through and at predetermined space locations in said longitudinal member and at an angle transverse to the axis of the member and removing the essentially wedge-shape portion defined by said cuts, said angle corresponding to one half the angle of the bent angle of the member; drilling an enlarged circular opening in the strip at the apex of the converting cuts; heating the longitudinal member; and bending the said member along its longitudinal axis and in the plane of the longitudinal member thereby closing the opening and butting the edges of said converging cuts to define the desired corner.