Modular, non-metallic, hard shell predimensioned, preformed...

Details Modular, non-metallic, hard shell predimensioned, preformed... Modular, non-metallic, hard shell predimensioned, preformed...

G - Physics

08

G

340/124.3

G08G 1/01 (2006.01)

Patent

CA 1298900

A MODULAR, NON-METALLIC, HARD SHELL, PREDIMENSIONED, PREFORMED AND SEALED INDUCTION LOOP VEHICLE DETECTION SYSTEM AND METHOD OF INSTALLATION ABSTRACT An induction loop vehicle detection system and method of making and installing such a system are disclosed wherein the conduit sections containing the induction loop are preformed and prewired integrally with all interconnects by using removable expansion joints to assemble sections of prewired and sealed conduit in any desired configuration. The expansion joints can be removed after assembly to enable the induction loop to be folded down for shipment. The expansion joints also enable longitudinal displacement of the induction loop conduit due to thermal differential expansion during installation and during extreme changes in temperature over the lifetime of the system, thereby preserving the integrity of the roadway and fault free operation of the induction loop. The wires forming the induction loop are completely sealed within the conduit with an asphalt rubber material thereby precluding any moisture penetration. The induction loop vehicle detector is installed by a method of dry routing of pavement which eliminates labor intensive slurry clean-up. The conduit is sealed in the routed slot in a roadway with a pressure withstanding asphalt rubber material which tenaciously adheres to the side surfaces of the routed slot.

570564

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