Detector for detecting the passage of heavy objects on a roadway
AssigneeCompagnie Generale d'Automatisme
InventorRichard C. Robert
Life of this patent
Estimating the term…
Abstract
A detector for detecting the passage of heavy objects on a roadway, wherein the detector is an elongate strip in the form of nested channel-section members, said members comprising, from the outside towards the inside a first channel section bar (1) made of a strong material; a second channel section bar (2) made of a shock-absorbing material embedded in the channel of said first bar; a third channel section bar (3) made of a strong material embedded in the channel of said second bar; and a sensor (4) embedded in the channel of said third bar.
Claims3
A detector mountable in a roadway groove for detecting the passage of heavy objects traversing said roadway, said detector comprising an elongate strip in the form of nested channel-section members, said members comprising, from the outside member towards the inside:
- a first channel section bar made of a strong material;
- a second channel section bar made of a shock-absorbing material embedded in the channel of said first bar;
- a third channel section bar made of a strong material embedded in the channel of said second bar;
- and
- a sensor embedded in the channel of said third bar.
A method of installing a detector for detecting the passage of heavy objects traversing a roadway, said method comprising the following steps:
- cutting a groove within said roadway;
- pouring adhesive resin into said groove;
- positioning a detector comprising an elongated strip in the form of nested channel section members within said groove with the outside channel-section member in contact with the adhesive resin and with said nested channel-section members comprising from the outside member towards the inside;
- a first channel-section bar made of a strong material;
- a second channel-section bar made of a shock-absorbing material embedded in the channel of said first bar;
- a third channel section bar made of a strong material embedded in the channel of said second bar;
- and
- a long thin piezoelectric type sensor disposed in the channel of said third bar;
- and filling the remainder of the groove with additional adhesive resin and turning down the excess resin over the detector and over edges of the groove.
Dependencies are inferred from the claim text.