Vehicle suction brake

An auxiliary brake for a motor vehicle driven upon a roadway comprising:

• at least one suction cup normally stored on said vehicle;
• means on said vehicle for lowering and raising said suction cup, said raising and lowering means including a fluid cylinder having a piston connected to said suction cup and a fluid circuit for driving said piston in said cylinder, said fluid circuit being selectively actuable;
• means on said vehicle for evacuating air from the interior of said suction cup thereby creating a vacuum between said suction cup and said roadway;
• means on said vehicle for supplying air to said interior of said suction cup to break the vacuum between said suction cup and said roadway;
• first switch means mounted on the floor of said vehicle for activating said evacuation means, said first switch means simultaneously activating said lowering and raising means to lower said piston;
• and
• second switch mounted on the dash of said vehicle for simultaneously actuating said supply means and for deactivating said raising and lowering means to raise said piston.