Speed bumps for roadways

Details Speed bumps for roadways Speed bumps for roadways

1985-09-20

1987-10-06

Novosad, Stephen J.

Bridges

Gangway, ramp, or dock leveler

404 16, 404 35, 404 40, E01D 100, E01F 1300

Patent

active

046972943

ABSTRACT:
A resilient ramp structure for highways, especially useful as a highway speed bump has at least two ramp plates fixable to a highway surface. Each ramp plate has an inclined surface leading to a level platform surface which can be abutted against another such plate or to a flat platform plate. In the ramp plate, the inclined and platform sections are formed integrally. A reinforcing strip runs along the inclined portion of the ramp plate and receives screws to be affixed in the underlying material. Junctions between abutting ramp and/or platform plates are secured by pressure plates that are disposed in recesses at the corners of the plates and hold each adjacent plate to the underlying material.

REFERENCES:
patent: 644138 (1900-02-01), Ketchum
patent: 4430837 (1984-02-01), Kirschenbaum
patent: 4468910 (1984-09-01), Morrison
patent: 4577448 (1986-03-01), Howorth

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