Abstract: A protective guard is used to cover the gap formed between a hinged door and a door frame or doorjamb when the door is in the open position. The guard comprises several elements that are pivotally joined to one another using a C-clamp. One element is mounted on the face of the door and another element is joined to the frame or jamb. Each of these is joined to a transition element which in turn may be joined in succession to one or more channel elements. Optionally, the guard may include a retainer spring that serves to preserve the convex shape of the guard when the door is being pivoted between the open and the closed positions. The safety guard may be made out a wide variety of materials including metal, plastic, rubber and foam.

Abstract: A fail-safe thermostat valve for controlling the flow of coolant to an engine has, in addition to a thermostat element that expands and contracts to open and close the valve, a fusible element that supports an elevated plate that holds two springs. One spring holds the valve plate in its normally closed position. When the thermostat element fails, the fusible element melts and allows the second spring to force the elevated plate away from the valve seat and pull valve plate away from the valve seat as well. Thus, when the thermostat element fails, the valve will remain permanently open until it can be replaced.