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US 4,362,424 AGranted
Speed bump
OwnerGerald L. Barberinventor
Life of this patent
Estimating the term…
Abstract
A speed bump for use on roadways which imparts a controlled jar to vehicles as they pass thereover. A retarding force is imparted to a downwardly depressible member responsive to the speed of the vehicle.
Claims4
A speed bump for use on a road for imparting a controlled jar to a vehicle as the tires of said vehicle pass thereover comprising:
- an elongated flexible housing having a length sufficient to extend across a portion of a road to cover a path traveled by vehicles;
- an elongated chamber carried in said housing;
- fluid carried in said elongated chamber;
- means for securing said elongated flexible housing to said road;
- said elongated housing projecting vertically above said road and being compressible by a tire of said vehicle as said tire passes thereover for displacing said fluid under said tire from said chamber;
- and
- means for retarding the displacement of said fluid from said chamber and the compression of said housing at a controlled rate as said tire of said vehicle passes over said elongated flexible housing.
4 more elements
Dependencies are inferred from the claim text.