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    • 2. 发明授权
    • Retractable traffic delineator
    • 可伸缩交通划线器
    • US4597691A
    • 1986-07-01
    • US433015
    • 1982-10-06
    • Ronald A. W. Clarke
    • Ronald A. W. Clarke
    • E01F9/571E01F9/06
    • E01F9/571
    • A traffic delineator is capable of being depressed so that its upstanding light reflective surface is depressed into a plane coincident with, or subterranean with that of the surrounding pavement, when the delineator is located in a highway, or on any other over travelling vehicle surface. The depression of the light reflective surface of the retractable delineator is activated either by horizontal or vertical thrust. Specifically when a combination of both is experienced as in the case of the movement of vehicular traffic over the delineator or of grading instruments or equipment such as snow ploughs and the like which are used for cleaning the surface of the travelled highway during winter conditions. After the travelling vehicle has passed, the light reflecting surface, as a result of biasing action within the delineator, relocates the light reflective surface again into an elevation above the surface of the road.
    • 当划线器位于高速公路或任何其他行驶过的车辆表面上时,交通描绘器能够被压下,使得其直立的光反射表面被压入与周围路面重合或地下的平面。 通过水平或垂直推力激活可伸缩描绘器的光反射表面的凹陷。 特别是当两者的组合经历如在车辆行驶在划线器上的情况下,或在冬季条件下用于清洁行驶的公路的表面的分级仪器或诸如积雪犁等设备的设备的情况下。 在行驶车辆过去之后,作为划线器内的偏置动作的结果,光反射面再次将光反射面重新定位在道路表面上方的高度。
    • 6. 发明授权
    • Depressible pavement device
    • US10443198B2
    • 2019-10-15
    • US15379781
    • 2016-12-15
    • RoadVision Technologies, Inc.
    • Dean H. Paulos
    • E01F9/00E01F9/571
    • A retractable, reflective pavement marker for delineating traffic lanes of roadways and a method of installing the same that provides improved protection from potentially damaging vehicle tires, snowplows, and environmental conditions. The marker incorporates a reflector assembly mounted to a piston that is depressible within a housing. A biasing member returns the reflector assembly to its normal position above the road surface. A compliant adhesive cooperates with an adhesive lock formed between the housing and the opening to ensure that the marker is reliably retained within the pavement. The adhesive and a chamfered opening prevent pavement spalling due to external forces. The housing includes a removable retainer through which the piston is reciprocally received. The retainer includes a plurality of coarsely pitched lead-in threads that cooperate with a threaded housing. Multiple lead-in threads provide sufficient thread engagement, while substantially decreasing the number of rotations to achieve full engagement.