Self-cleaning reflective road marker

Details Self-cleaning reflective road marker Self-cleaning reflective road marker

1981-05-11

1983-11-08

Leppink, James A.

Road structure, process, or apparatus

Traffic director

Yielding

404 10, E01F 900

Patent

active

044139233

ABSTRACT:
A self-cleaning reflective road marker comprises a housing formed of a generally cylindrical portion insertable into the road and a flanged portion for lying on the road surface connected thereto. The housing contains a stud mounted on a rubber hemisphere. The stud contains a circular reflector and the housing contains a circular o-ring located in the flanged portion opposite the reflector. In response to the passing of a tire over the marker, the stud is depressed and the reflector is wiped clean by the o-ring. On removal of the tire force, the resilience of the rubber hemisphere forces the stud into its original position and the reflector is further cleaned by the o-ring.
The stud consists of two parts connected together, from above by a threaded bolt such that when the marker is fixed in the road the part can be removed to enable removal or replacement of the reflector and the o-ring.

REFERENCES:
patent: 2941447 (1960-06-01), Abbott
patent: 3216335 (1962-03-01), Stolarczyk et al.
patent: 3570377 (1971-03-01), Gerber
patent: 4049358 (1977-09-01), King et al.
patent: 4130370 (1978-12-01), Kone

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