Abstract: A vacuum head (10) for pick-up and placement of integrated circuit devices (16, 16'). The apparatus includes an outer housing (18) enclosing therewithin an inner tip assembly (34). The inner tip assembly (34) is disposed for reciprocation through and past an orifice (24) formed in a fitting (26) closing one end of the casing (20) of the outer housing (18). The inner tip assembly (34) has formed therein a shoulder (76) which, when the assembly (34) is moved to an extended position, can engage a seat (78) formed in an inner surface of the fitting (26). An O-ring (80) can be interposed between the shoulder (76) and the seat (78) to preclude vacuum generated in vacuum chamber (30) from being directed other than through an orifice (68) formed in the inner tip assembly (34). An air cylinder (48) is provided to actuate the inner tip assembly (34) for movement between retracted and extended positions.

Abstract: A dual magnetic head assembly is provided with asymmetrical crosstalk shielding. One of the heads includes a pair of mu-metal washers sandwiching a copper washer, the stacked washers surrounding the portion of the head including the read-write gap. The washers are enclosed within a copper plated mu-metal cap having a central opening through which the gap-containing portion of the head projects for cooperation with a magnetic medium. The other head is unshielded.

Abstract: Separation of lubricating oil, entrained in the discharge gas produced by a rotary vane compressor, is achieved in a relatively small space by initially passing the oil-laden discharge gas through a first closed chamber, containing an oil separating element, to form a stream of gas having some of its oil removed and having a desired velocity uniformly distributed across the stream's cross section. The gas stream is then circulated within a second and larger closed chamber where the remaining oil is separated out by gravity settling and impingement on the second chamber's walls. The separated oil collects in a reservoir at the bottom of the second chamber to form an oil pool. The oil-free discharge gas exits through an outlet in the second chamber.