| 摘要 |
A seamless elongate pressure actuated switch includes a seamless tubular sheath fabricated from a resiliently flexible polymeric resin, and two separate and spaced apart conductive coatings disposed lengthwise along the inside surface of the tubular sheath. The sheath is deformable in response to pressure applied thereto to move the conductive coatings into contact with each other. The conductive coatings are the only means of conducting electricity lengthwise along the inside of the sheath. The thickness of the coatings ranges from about 0.00001 inches to about 0.01 inches. The elongated pressure actuated switch can be made by coating the inside wall of the tubular sheath with a conductive coating and then dividing the conductive coating into two spaced apart portions, or by coextrusion of the spaced apart conductive coatings with the sheath material.
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