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An expandable clamp of the type that is used within a channel to compress a planar member within that channel against a wall of that channel. The clamp has an expandable bladder of an elongated cylindrical shape and a valve for introducing a gas or a liquid into the bladder for expanding it. Alternatively, the clamp may be manufactured with a closed bladder that is partially filled with a fluid. This closed bladder may be expanded by increasing the pressure on the fluid such as by compressing the fluid with a piston. The clamp is particularly suited for use in Standard Electronic Modules for providing more uniform contact between the frame of the electronic module and the card chassis of the instrumentation.
Fletcher, Leroy S. (1998). Expansion clamp. United States. Patent and Trademark Office; Texas A&M University. Libraries. Available electronically from