B - Operations – Transporting – 25 – J
Patent
B - Operations, Transporting
25
J
306/304
B25J 19/00 (2006.01) B25J 13/08 (2006.01) G01L 1/18 (2006.01) G01L 1/20 (2006.01) G01L 5/22 (2006.01) H01H 13/702 (2006.01)
Patent
CA 1233865
Abstract A tactile sensor for sensing an object in contact therewith. In its preferred form, the sensor compri- ses a plurality of layers disposed in a sandwich arrangement. A top layer is comprised of a flexible, electrically-insulating material and a plurality of parallel flexible conductive rods. A bottom layer is comprised of an electrically-insulating material and a plurality of parallel conductive rods that extend at right angles to the conductive rods of the top layer, thus forming a sensory array comprising a plurality of superimposed intersection points arranged in a grid pattern. An intermediate layer is comprised of a resilient, electrically-insulating material in which is disposed a plurality of parallel conductive posts that extend perpendicular to the plane of the three layers. These posts are comprised of a resilient con- ducting material. Each conductive post is disposed at one of the sensor's aforementioned intersection points so as to electrically couple one of the conductive rods of the top layer to one of the conductive rods of the bottom layer. The conductive rods are formed with a selected cross-section, in order that changes in the amount of pressure exerted on the sensor will produce corresponding logarithmic changes in the contact sur- face area, and hence electrical contact resistance, established between the conductive rods and those con- ductive posts disposed beneath the points of pressure.
445327
Cholakis Peter N.
Peterson Robert R.
Schubert Dale W.
Gowling Lafleur Henderson Llp
Wright (barry) Corporation
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