Method of manufacturing a climbing step with embedded reflection

Details Method of manufacturing a climbing step with embedded reflection Method of manufacturing a climbing step with embedded reflection

1988-07-26

1989-06-27

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Composite or multiple layer

264266, 264277, 4251291, B29C 4120, B29C 4516, B29C 6502

Patent

active

048427845

ABSTRACT:
A climbing step and its manufacturing method. The climbing step which is installed on wall surfaces of a manhole, pier or the like for ascent and descent is arranged such that a part of the step is coated with a layer of synthetic resin, and a reflection plate including protruding portions for preventing slippage are formed in the synthetic resinous surface. The reflection plate is embedded in the resinous surface over the tread portion while causing the surface to be exposed.

REFERENCES:
patent: 2064803 (1936-12-01), Grove
patent: 2179412 (1939-11-01), Keuthon
patent: 3097060 (1963-07-01), Sullivan
patent: 3253971 (1966-05-01), Garling
patent: 3445559 (1969-05-01), Siteman
patent: 3608049 (1971-09-01), Tavella
patent: 3830682 (1974-08-01), Rowland
patent: 4058942 (1977-11-01), Naka
patent: 4289819 (1981-09-01), Kalman

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