Abstract: A lock assembly for a hinged door has a pair of hasps that align with each other, each having a hole. A housing with an open back fits over the hasps. A retainer pin extends through an aperture in the housing and through the aligned holes of the hasps. The retainer pin has a pair of axially spaced apart shoulders. A key actuated lock member has a lock pin that extends perpendicular to the retainer pin and between the shoulders in an engaged position.

Abstract: A mounting apparatus for attaching a warning signal device to the roof of a vehicle. The warning signal apparatus has a rectangular frame with a metal rim. Signal lights enclosed within a light transmitting housing are located on each side. The frame is connected to the roof by four mounting assemblies, one attached to the rim of the frame of each corner. The mounting assembly includes a bracket to which a resilient pad is pivotally attached. A clip has a portion that engages the roof and is connected to the bracket by an adjusting screw to pull the frame tightly to the roof.