Patent ID: 6986668

Claim:
A sub-assembly comprising an electronic module, said module containing a generally planar surface defined by four sides, and an interposer containing a rectangular housing for controlling the sliding motion of said module relative to said interposer, said housing having two contiguous edges containing restraints positioned to contact two sides of the module and springs connecting the other two contiguous edges of the interposer to the other two sides to the module, said surface having small irregularities that contribute to a lack of planarity, the module clamped to said interposer, said interposer including two stops spacedly positioned at right angles to the planar surface of the interposer and along two edges thereof, and projecting toward said module, such that the combined height of the stops is at least equal to the maximum expected rocking movement of the planar surface due to the irregularities, whereby the stops engage the generally planar surface of the module.