Abstract: The present invention provides a precise polishing apparatus and method in which a polished body is polished by rotating a polishing pad having a diameter greater than that of the polished body while urging the polishing pad against the polished body in conditions that a center of the polished body is deviated from a rotation axis of the polishing pad and that the polishing pad is contacted with the entire polished surface of the polished body. The polished body may be a semi-conductor wafer.

Abstract: The present invention concerns a polishing method of keeping a polishing pad under a predetermined pressure and in contact with a polished surface of a wafer and performing polishing while rotating the wafer and the polishing pad, in which symmetry of a film on an alignment mark for alignment of the wafer is measured after an end of the polishing of the wafer or in the middle of the polishing and in which polishing thereafter is carried out by controlling rotation speeds of the wafer and polishing pad according to the symmetry of the film on the alignment mark, thus measured, whereby the film on the alignment mark of the wafer can be isotropically polished in symmetry.

Abstract: In order to efficiently polish a large-area member to be polished to a desired shape, a polishing apparatus includes a first polishing station including a first holding unit for holding a member to be polished in a state in which a surface to be polished thereof is upwardly placed, and a first polishing head for holding and rotating a polishing pad whose polishing surface is larger than the surface to be polished in a state of contacting the surface to be polished, a detection station for detecting a polished state of the surface to be polished in a state in which the surface to be polished is upwardly placed, and a second polishing station including a second holding unit for holding the member to be polished in a state in which the surface to be polished thereof is upwardly placed, and a second polishing head for holding and rotating a polishing pad whose polishing surface is smaller than the surface to be polished in a state of contacting the surface to be polished.

Abstract: An edge connector (1) having metal latching devices (5) to latch and unlatch a circuit board (4) is disclosed. More particularly the latching devices (5) include a latching section (53) for latching the board (4) and an unlatching section (54) for releasing the board (4).

Abstract: An edge connector (1) having metal latching devices (5) to latch and unlatch a circuit board (4) is disclosed. More particularly the latching devices (5) include a latching section (53) for latching the board (4) and an unlatching section (54) for releasing the board (4).

Abstract: A plug connector assembly (1) includes a housing (2) adapted to receive multiple connectors (9) inserted therein carrying cables (8) with a cover (3) having mating halves (3a, 3b) which latch together onto the housing, locking the connectors in place. The housing includes a resilient arm (4) operable to latch the assembly to a mating connector. The cover (3) includes a further resilient arm (3b) operable to depress the housing resilient arm to disengage the assembly from the mated connector.

Abstract: An edge connector (5) for receiving an edge of a circuit board (6) is disclosed. The contacts (2) positioned in the housing (4) of the connector (5) include a resilient stand-up section (25) having a tip (25a) defining a first contact point (A) and a C-shaped section (26) having a tip (26a) defining a second contact point (C) with the circuit board (6) being received between the first and second contact points (A,C).

Abstract: Daisy chain connector comprises a dielectric housing in which an electrical contact assembly is secured. Contact assembly comprises identical contact sub-assemblies, each contact sub-assembly including electrical contacts having contact sections in alignment with apertures in a front surface of the housing and terminating legs for electrical connection with signal conductors and ground conductors of electrical cables. Contacts include contact plates in engagement between contact sections and legs defining bifurcated pairs of legs for each contact so that the signal conductors of one of cables are respectively connected to one of legs and the signal conductors of the other of the cables are respectively connected to the other of legs and at least one of legs forms a ground bar to which ground conductors are connected.

Abstract: An electrical connector comprises a plurality of signal contacts (20,30) disposed in two rows in an insulating housing (10) and each having one end for connection to respective signal wires (S) in an electric cable (1) and another end for connection with a signal terminal of a member to which the connector is to be connected, a plurality of ground contacts (62) disposed in a row between the two rows of signal contacts (20,30) and having one end for connection to ground wires (G) in the cable (1) and another end for connection with a ground terminal of the member to which the connector is connected, and a shield member (60) disposed between the signal contacts to prevent crosstalk therebetween.

Abstract: A shielded electrical connector comprises a housing having contact sections of electrical contact members disposed in passages of the housing and exposed terminal sections extending outwardly and downwardly from a rear surface of the housing for electrical connection with signal paths of a printed circuit board. A shield plate extends along a row of terminal sections and has ground terminals electrically connected to ground tabs of contact members and ground terminals for electrical connection with ground paths of the printed circuit board.

Abstract: An electrical connector for connecting electrode members of a chip carrier to circuit paths of a circuit board comprises a base housing having rows of aligned apertures extending through a bottom section of the housing. A contact assembly has electrical contacts which include spring contact portions for electrical engagement with respective electrode members of the chip carrier and inclined and aligned terminal portions in rows that are disposed in respective apertures for electrical connection with respective circuit paths of the circuit board and a depressing member on the base housing that depresses the electrode members of the chip carrier into wiping electrical contact with the contact portions.

Abstract: An electrical connector for connecting electrode members of a chip carrier to circuit paths of a circuit board comprises a base housing having rows of aligned apertures extending through a bottom section of the housing. A contact assembly has electrical contacts which include spring contact portions for electrical engagement with respective electrode members of the chip carrier and inclined and aligned terminal portions in rows that are disposed in respective apertures for electrical connection with respective circuit paths of the circuit board and a depressing member on the base housing that depresses the electrode members of the chip carrier into wiping electrical contact with the contact portions.

Abstract: An electrical connector assembly for terminating flat shielded electrical cable comprises two matable connectors one comprising a housing carrying signal and ground contacts for connection to respective conductors of the cable, and the other comprising a housing carrying contacts for mating with the signal contacts of the one connector, the signal contacts being separated by shielding plates matable with the ground contacts of the one connector.