Parabolic reflector and method of forming the same

Abstract From the Canadian patent

A parabolic reflector is made of sheet material from a flat pliable elongated blank bent to form a parabolically curved shield shaped member. Both blank and member have continuously varying transverse widths from end to end thereof and terminate in a pointed lobe at one end or in two pointed lobes at opposite ends. Opposite lateral edges of the blank and member are oppositely curved. The blank and member are symmetrical on opposite sides of a central longitudinal line. The member is parabolically curved longitudinally from end to end and is straight transversely from end to end. The member can be formed by applying a force to the pointed end of single lobed blank while clamping the other …