Abstract: Installation for the transport of tennis balls having at least one substantially vertical bouncing wall as well as a collector gutter for the balls and arranged at the foot of the wall. The covering (1) of the bouncing wall (2) is simply attached to a pair of parallel flanges (6,6') of the frame and the lateral portions (8,8') connecting the flanges (6,6') move away from each other due to the pressure of the springs (7) which are arranged thereto.

Abstract: A lamp adapted to be mounted in a hole in a wall has an outer frame fittable in the hole, an inner housing part for securing the frame snugly in the hole bearing inward against the wall, a generally part-cylindrical reflector engageable snugly inside the frame, extending along an axis, and having one end extending axially past the opening and a socket for a bulb at the one end of the reflector. The reflector is of limitedly elastically flexible sheet metal, is of U-section, and at least one of its ends is axially open. A terminal box is provided on the inner housing part and a flexible electric wire extends between the box and the socket, passing out through the open end of the reflector. Both ends of the reflector extend axially past the opening and bear on the outer frame, and the reflector has axially extending edges provided with tabs engaging outwardly into the outer frame.