Ferromagnetic loop
First Claim
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1. A ferromagnetic loop for detection of vehicles, comprising:
- a continuous wire shaped in a serpentine manner on a plane having a footprint,wherein the continuous wire forms at least three contiguous polygons within the footprint,wherein each of the at least three contiguous polygons is associated with a spacing dimension, each spacing dimension ranging between about three inches and about eight inches, a sum of spacing dimensions of the at least three contiguous polygons is greater than about 24 inches, andwherein the ferromagnetic loop is configured to be installed in a traveling path of a vehicle,whereby a frequency associated with the ferromagnetic loop is affected when the vehicle comes within a distance perpendicular to the plane of the footprint.
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Abstract
A ferromagnetic loop having a footprint characterized by a continuous wire shaped in a serpentine manner to form multiple contiguous polygons within the footprint for detection of moving vehicles. The footprint can be one of a triangle, a square, a rectangle, a rhombus, a parallelogram, an ellipse, or a circle. Similarly, each of the multiple contiguous polygons can be one of a triangle, a square, a rectangle, a rhombus, a parallelogram. Different design configurations for the ferromagnetic loop and methods for making and using the same are disclosed.
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Citations
50 Claims
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1. A ferromagnetic loop for detection of vehicles, comprising:
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a continuous wire shaped in a serpentine manner on a plane having a footprint, wherein the continuous wire forms at least three contiguous polygons within the footprint, wherein each of the at least three contiguous polygons is associated with a spacing dimension, each spacing dimension ranging between about three inches and about eight inches, a sum of spacing dimensions of the at least three contiguous polygons is greater than about 24 inches, and wherein the ferromagnetic loop is configured to be installed in a traveling path of a vehicle, whereby a frequency associated with the ferromagnetic loop is affected when the vehicle comes within a distance perpendicular to the plane of the footprint. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A ferromagnetic loop for detection of vehicles moving in a direction of a traveling path, comprising:
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a continuous wire shaped in a serpentine manner within a footprint, wherein the footprint is characterized by a footprint length dimension parallel to the direction and a footprint width dimension perpendicular to the direction, wherein the continuous wire forms at least three contiguous polygons within the footprint, wherein each of the at least three contiguous polygons is characterized by a polygon length dimension parallel to the direction and a polygon width dimension perpendicular to the direction, each polygon length dimension ranging between about three inches and about eight inches, a sum of the polygon length dimensions is greater than about 24 inches, and wherein the ferromagnetic loop is configured to be installed in a traveling path of a vehicle, whereby a frequency associated with the ferromagnetic loop is affected when the vehicle moves across the footprint in the direction along the traveling path. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A ferromagnetic loop for detection of vehicles moving in a direction of a traveling path, comprising:
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a continuous wire shaped in a serpentine manner within a footprint, wherein the footprint is characterized by a footprint length dimension parallel to the direction, wherein the continuous wire forms at least three contiguous polygons within the footprint, wherein each of the at least three contiguous polygons is characterized by a spacing dimension measured along a polygonal axis, a sum of the spacing dimensions of the at least three contiguous polygons is greater than about 24 inches, the polygonal axis forms an angle with the direction, wherein the angle is one of about 30 degrees and about 45 degrees, and wherein the ferromagnetic loop is configured to be installed in a traveling path of a vehicle, whereby a frequency associated with the ferromagnetic loop is affected when the vehicle moves across the footprint in the direction along the traveling path. - View Dependent Claims (28, 29, 30, 31, 32)
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33. A method for installing a ferromagnetic loop for detection of vehicles moving in a direction of a traveling path, comprising:
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preparing a web of grooves on a traveling lane, wherein the web of grooves is confined within a footprint having a footprint length dimension and a footprint width dimension; laying a continuous wire in a serpentine manner within the web of grooves to form at least three contiguous polygons within the footprint, wherein at least two turns of the continuous wire are laid within at least one groove of the web of grooves, wherein the at least two turns are arranged in one of a side-by-side configuration within the at least one groove and a one-over-the-other configuration within the at least one groove, and wherein each of the at least three contiguous polygons is associated with a polygon length dimension, a sum of the polygon length dimensions is greater than about 24 inches; securing the continuous wire within the web of grooves; and connecting the continuous wire to a loop detector. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. A method for preparing a ferromagnetic loop, comprising:
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shaping a continuous wire in a serpentine manner to form at least three contiguous polygons within a footprint, wherein the footprint is characterized by a footprint length dimension and a footprint width dimension, the footprint length dimension is greater than about 24 inches, wherein each of the at least three contiguous polygons is characterized by a polygon length dimension and a polygon width dimension, wherein a sum of all polygon length dimensions substantially equals to the footprint length dimension; and attaching at least one fastener along the continuous wire to maintain the at least three contiguous polygons. - View Dependent Claims (44, 45, 46, 47, 48, 49, 50)
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Specification