Abstract: An instrument housing defines a chamber and has a metal shell with an aperture region defining an array of parallel elongated apertures. The shell has an elongated web between each pair of adjacent apertures, and a raised element protrudes from the web. The raised element is spaced apart from each aperture to reveal a portion of the web near each aperture. A resilient, electrically conductive spring element is electrically connected to the web and has a compressible portion extending away from the web, such that a metal plate pressed toward the revealed surface makes electrical contact with the spring and thereby to the shell, and is laterally constrained by the raised element. The raised element may be welded to the web with the spring captured between, or the raised element may be partially sheared to protrude from the web, with an aperture in the spring closely receiving the raised portion with an interference fit.

Abstract: An integrated circuit probe station comprises a table having a substantially planar upper surface, an IC probe positioned over the table in spaced relationship with the upper surface of the table, a chuck carrier, and a chuck. The chuck carrier has a substantially planar lower surface that is positioned in confronting relationship with the upper surface of the table, and a film of viscous material is interposed between the upper surface of the table and the lower surface of the chuck carrier, whereby the chuck carrier may be moved manually relative to the table in horizontal directions while resting on the table. The chuck is carried on the chuck carrier and is movable vertically relative to the chuck carrier. A mechanical prime mover is effective between the chuck carrier and the chuck for bringing about vertical movement of the chuck relative to the chuck carrier.

Abstract: An electromagnetic interference (EMI) shielding device for use in supporting members that receive enclosure covers of electrical or electronic instruments. The EMI device comprises an L-shaped strip of metal having first contact means which maintain the device in position in a groove in the supporting member and provide electrical contact therewith and spring contact means against which an edge of an enclosure member disposed in the groove engages thereby providing electrical contact therewith and securely maintaining the enclosure member in position.