초록 ▼

A depressible pavement marker is provided and includes a base receptacle, a piston assembly with a reflector and a resilient, compressible, water impervious mass. The base receptacle is mounted in the pavement with a portion of the piston assembly protruding above the pavement so that the reflector

A depressible pavement marker is provided and includes a base receptacle, a piston assembly with a reflector and a resilient, compressible, water impervious mass. The base receptacle is mounted in the pavement with a portion of the piston assembly protruding above the pavement so that the reflector can be seen. The piston assembly and base are of a piston-in-cylinder arrangement with the piston assembly depressible into the base. The mass fills substantially the entire cavity formed between the inner surfaces of the piston assembly and the base. In another embodiment a self illuminating marker is provided and includes a solar cell, rechargeable battery, light source and sensor. The solar cell recharged the battery during daylight hours. The sensor energized and de-energized the light source in response to external indications. A further embodiment is also provided which includes a locational traffic marker having a transmitter in the piston assembly for sending a locational signal to a remote receiver such as for example a suitable equipped emergency vehicle.

대표청구항 ▼

A depressible, reflective, pavement marker comprising: a base receptacle adapted to be fixedly secured to the walls of a cavity formed within a pavement, said base receptacle having an upper end portion adapted to be positioned at or below the upper surface of said pavement whereby snow removal equi

A depressible, reflective, pavement marker comprising: a base receptacle adapted to be fixedly secured to the walls of a cavity formed within a pavement, said base receptacle having an upper end portion adapted to be positioned at or below the upper surface of said pavement whereby snow removal equipment may move thereacross without damaging said receptacle; a piston assembly freely movable within said base and including a reflector, portions of said piston assembly normally protruding above the base and the pavement surface, said portions being depressible downwardly into said base; said piston assembly including metal wear members associated with said protruding portions of said piston operative to resist abrasive wear resulting from foreign objects moving across said protruding portions; and a resilient, compressible, substantially water impervious mass filling substantially all the space within said piston assembly and within said base and biasing said piston assembly upwardly to protrude above said base, said mass minimizing void space in said piston assembly and said base to effectively inhibit accumulation of water therewithin without requiring reliance upon sealing means operating between said piston and said receptacle whereby piston movement preventing ice formation within said chamber is effectively resisted and movability of said piston within said chamber is maintained without regard to ambient climatic conditions.