Abstract: A top loaded burn-in socket for forming a plurality of electrical connections between a ball gird array (BGA) package having a plurality of conductive ball leads and an electrical component is provided. The socket assembly includes a plurality of resilient electrical contacts; a cam being configured to position the contacts from a first position to a second position; a device guide plate including a plurality of openings for receiving the ball leads; and an actuating mechanism configured to interact with the cam to position the contacts, wherein an upper portion of the contacts engages the ball leads between the upper portion and an inclined surface of the device guide plate openings. Each ball is thus held in a manner that does not require the use of a hold down mechanism for effecting electrical continuity between the BGA package and the contacts of the subject burn-in socket.

Abstract: A shielded semiconductor chip carrier having a high-density external interface includes conventional printed circuit boards having plated through holes for achieving shielding of the contacts of the matrix. Two fork type connectors have molded about the distal ends thereof an annular ring of dielectric plastic material, and fork type connectors are press fit into each plated through hole, thereby locking the electrical contact within the shield formed by the plated through hole. The resulting connector provides a high-density contact matrix with each connector being electrically shielded along substantially its entire length.

Abstract: The invention relates to a filter element (F), particularly for the static or dead-end filtration of fluids, comprising an inner, essentially hollow supporting core (10) and at least one filter layer (12–14) placed thereon. The inner supporting core (10) is formed as a single piece together with a first end plate (20) and with a second end plate (30). The first end plate (20) comprises a connecting piece (22), which is provided therewith as a single piece and which is fluid-connected to the supporting core (10). The second end plate (30) has a seat (32), which is formed therein, is fluid-connected to the supporting core (10) and is adapted to the shape of the connecting piece (22) whereby enabling a connecting piece (22) of a second structurally identical filter element (F) to be at least partially inserted into the seat (32) in order to establish a fluid connection between the supporting cores (10) of the filter elements (F).

Abstract: A top loaded burn-in socket for forming a plurality of electrical connections between a ball gird array (BGA) package having a plurality of conductive ball leads and an electrical component is provided. The socket assembly includes a plurality of resilient electrical contacts; a cam being configured to position the contacts from a first position to a second position; a device guide plate including a plurality of openings for receiving the ball leads; and an actuating mechanism configured to interact with the cam to position the contacts, wherein an upper portion of the contacts engages the ball leads between the upper portion and an inclined surface of the device guide plate openings. Each ball is thus held in a manner that does not require the use of a hold down mechanism for effecting electrical continuity between the BGA package and the contacts of the subject burn-in socket.

Abstract: The invention concerns a device and method for monitoring the integrity of filtering installations consisting of a filter housing (1) designed to perform integrity tests and for filtration, equipped with a plurality of filter elements (2, 3) and an electronic testing and monitoring unit (4) designed for monitoring and performing integrity tests, said filter elements (2, 3) having each a storage element and a communicating part (7) being connected to the monitoring and testing unit arranged in the filtering housing, whereon data of said electronic storage elements can be read.

Abstract: A safety sensor for a power operated overhead door includes an elongated housing having an elongated pathway which is a circular in cross sections along its length, with the greatest diameter of the pathway being at it midpoint. Form the midpoint, the pathway tapers downwardly in opposite directions, with a recess portion at each opposite end. In each recess portion there are two spaced electrical contacts. A ball bearing is disposed in the elongated pathway. The sensor is mounted horizontally to an overhead door, and if the door is tilted from the horizontal, the ball bearing rolls to the lower recess area, thereby establishing electrical contact which operates to stop the movement of the door. The obstruction to the door is then cleared, and the system is reset.

Abstract: A knee prosthesis includes a femoral component, a tibial component, a bearing and a control arm. The bearing is in articular bearing engagement with the femoral component and in sliding and rotational bearing engagement with the tibial component. Movement of the bearing relative to the tibial component is controlled by a control arm. The anterior extreme of the control arm includes a removable stop for limiting anterior movement of the bearing relative to the tibial component.

Abstract: A media validation system including a plurality of media storage devices which contain a quantity of content thereon, a user computer processor assembly structured to operatively access a select media storage device, a verification module, and a communicative link between the verification module and the user computer processor assembly. Each of the media storage devices includes a unique unit identifier, the verification module identifying the unique unit identifier of the select media storage device and receiving user information associated therewith. The verification module is also structured to apply a reward credit in association with only a first user whose user information is associated with the unique unit identifier for the select media storage device.

Abstract: A method is made available for conducting an integrity test of filter elements (3), in particular of sterile filters. The integrity test involves direct measurement, at constant pressure, of a liquid flow on the inflow side of the filter element (3) to be tested. The test method is practically independent of changing environmental conditions, provides a result which is not distorted by a change of pressure on the inflow side of the filter element, and permits a very short measurement time.

Abstract: A test probe consists of an elongated screw machine contact biased by a helical spring and mounted in a through hole of a non-conductive substrate. One end of the contact includes a crown for engaging a solder ball lead of an IC package, and the contact includes an intermediate collar which maintains the contact within the through hole. The helical spring is disposed about the contact, with one end thereof engaging the lower end of the collar. The other end of the helical spring has contiguous coils and is of a reduced diameter so as to extend beyond the lower end of the non-conductive substrate to make electrical contact with a printed circuit board. When the test probe is compressed between the IC package and the printed circuit board, the inherent twisting of the helical spring causes the contact to tilt and make electrical contact with the contiguous coils, thereby establishing a direct electrical path between the IC package and the printed circuit board, with minimum resistance and minimum inductance.

Abstract: The invention relates to a device and an assembly for cross-flow filtration comprising filter cassettes. Said filter cassettes are cost-effective to produce as they have few connections and simple clamping plates and are characterized by a long service life and by being highly flexible in adapting their capacity to the desired cross-flow filtration performance. The inventive device (1) comprises a holder and at least one filtration segment (2) consisting of clamping plates with filter cassettes fitted in a sealed manner therebetween. The clamping plates, which are configured as end plates, separation plates, distribution plates and collection plates and the filter cassettes are positioned on the holder so that they can be moved towards one another.