Other

Richard Lerch

Lester E Burgess

Gary Kovac

Shawn Martin

A pressure actuated switching device is made by applying at least a first layer of fluid conductive polymeric coating material to a surface of a sheet of green rubber material. The conductive polymeric coating is solidified to form an electrode, and the sheet of green rubber material is vulcanized. Two strips of green rubber may be simultaneously processed and then joined such that the respective layers of conductive coating are in spaced apart opposing relationship. The conductive polymeric coating may optionally be formulated with green rubber. Optionally, a blowing agent may be included in the conductive coating formulation so as to provide a cellular polymeric foam piezoresistive material from which the electrode is constructed. The green rubber sheets may be processed by a continuous rotary method or by a linear method using a clamping press having opening and closing dies for heating and joining the strips of green rubber.

Pressure actuated switching device and method and system for making same

A method for making a pressure actuated switching device includes applying a conductive coating to the release surface of a transfer substrate to form a conductive electrode film. The conductive film is brought into contact with a surface of a first substrate under conditions of heat and pressure sufficient to cause the conductive film to transfer from the release surface of the transfer substrate to the first surface of the first substrate. The first substrate is then positioned in juxtaposition with a second substrate having a conductive layer film of the first substrate. Also provided herein is a method for spring loading a terminal plug to the pressure actuated switching device.

Pressure actuated switching device and transfer method for making same

A pressure actuated switching device for free hanging from a horizontal support, such as a drape sensor, includes an outer electrically non-conductive cover having an exterior surface, an interior surface, and a bottom edge portion. A plurality of weep holes are disposed along the bottom edge for drainage of moisture which may condense in the interior of the device. The device also includes a first electrically conductive coating deposited on the interior surface of the cover sheet, an interior sheet having at least a first surface with a second electrically conductive coating deposited thereon, and an electrically non-conductive spacer disposed between the first electrically conductive coating and the second electrically conductive coating. The non-conductive spacer preferably possesses a plurality of zig-zag shaped ribs. The pressure actuated switching device includes a sensitizing bracket to laterally direct forces applied to its side, and tolerates extreme conditions of moisture, heat and cold.

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Media, PA, United States of America

Richard Lerch