Vehicle sensing device
First Claim
1. A sensing device comprising an electrically insulating elongate carrier;
- two electrically conductors extending longitudinally of the carrier and spaced apart transversely of the carrier so that there is not direct contact between the conductors;
a strip of elastomeric material overlying and in contact with both conductors in areas distributed along substantially the whole of their length, the strip being such that in the absence of a given level of applied pressure the strip formsd a barrier of high electrical resistance between the conductors, and that in the presence of applied pressure above the given level in any region of the strip, that region of the strip forms an electrically conductive path between the conductors; and
a jacket of water-resistant and abrasion-resistant elastomeric material, wholly encapsulating the carrier, conductors and strip.
2 Assignments
0 Petitions
Accused Products
Abstract
A vehicle sensing device comprises an electrically insulating elongate carrier (1) with two electrical conductors (2,3) extending longitudinally of the carrier and spaced apart transversely of the carrier so that there is no direct contact between the conductors. A strip (14) of elastomeric material overlies both conductors and is in contact therewith in areas distributed along substantially the whole of their length. The strip (4) being such that in the absence of a given level of applied pressure the strip forms a barrier of high electrical resistance between the conductors, and that in the presence of applied pressure above the given level in any region of the strip, that region of the strip forms an electrically conductive path between the conductors. The carrier, conductors and strip are wholly encapsulated in a jacket of water-resistance and abrasion-resistance elastomeric material.
27 Citations
15 Claims
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1. A sensing device comprising an electrically insulating elongate carrier;
- two electrically conductors extending longitudinally of the carrier and spaced apart transversely of the carrier so that there is not direct contact between the conductors;
a strip of elastomeric material overlying and in contact with both conductors in areas distributed along substantially the whole of their length, the strip being such that in the absence of a given level of applied pressure the strip formsd a barrier of high electrical resistance between the conductors, and that in the presence of applied pressure above the given level in any region of the strip, that region of the strip forms an electrically conductive path between the conductors; and
a jacket of water-resistant and abrasion-resistant elastomeric material, wholly encapsulating the carrier, conductors and strip. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- two electrically conductors extending longitudinally of the carrier and spaced apart transversely of the carrier so that there is not direct contact between the conductors;
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14. A vehicle sensing device comprising an elongate sensing device comprising a carrier strip of electrically insulating material;
- two transversely spaced electrical conductors extending longitudinally of the carrier strip and spaced apart transversely of the carrier strip so that there is no direct contact between the conductors;
a strip of elastomeric material, overlying both conductors the strip of elastomeric material being discontinued at one end of the sensing device to leave parts of the conductors exposed in a connection region;
a backing strip bonded to the carrier strip, the backing strip being of a material that will resist kinking and permanent set under application of a bending moment;
a twin-conductor connecting cable;
means connecting each cable conductor to a respective conductor of the sensing device in the connection region;
stress-resisting means surrounding the connection region and extending longitudinally from the end region of the cable to beyond the commencement of the strip of elastomeric material;
the exposed parts of the conductors, stress-resisting means and an end section of the cable all being wholly encapsulated in a water-resistant and abrasion-resistant jacket of elastomeric material. - View Dependent Claims (15)
- two transversely spaced electrical conductors extending longitudinally of the carrier strip and spaced apart transversely of the carrier strip so that there is no direct contact between the conductors;
Specification