A method and arrangement for improving electrical contact between a printed circuit board and an electrical component, wherein the electrical components have one or more spring contacts to provide electrical connection to one or more pads on the printed circuit board. The contacting point between a spring contact may be oxidized due to humidity, condensation water, chlorides or other environment agents. The oxidation at the contact point degrades the electrical connection and, eventually, causes a total loss in electrical contact. A vibration mechanism is used to cause the electrical components to move relative to the printed circuit board and the spring contacts to rub against the pads. The vibrating motion on the spring contacts cleans the contact points of undesirable materials at the contact points.

Dispositif de contact électrique sectionnable, du type comportant deux barrettes conductrices (3, 4) entre lesquelles un contact électrique peut être établi à l'aide d'une pièce conductrice (5) en forme de lame mobile dont au moins l'une des faces est destinée à venir en contact avec les barrettes conductrices. En outre, le dispositif comporte deux barrettes de nettoyage (7, 8) qui, situées en avant des barrettes conductrices (3, 4), dans le sens de déplacement de la lame mobile (5) vers la position de fermeture du contact, sont destinées à racler au moins la zone de chaque face de la lame mobile (5) destinée à venir en appui contre une barrette conductrice (3, 4).

Application à la réalisation de blocs de jonction.

A front connector insert includes a removable front portion (2) and a rear portion which is fixed in the connector. The rear portion retains the terminus of an optical fiber or electrical cable, with the removable front portion being removable to expose the terminus for cleaning or testing. The removable front portion includes a latching clip (9) having a detent (12) at one end which engages an identation in the fixed portion of the insert when the removable portion of the insert is aligned with the fixed portion such that the clips align with grooves in the fixed insert. Removal of the removable portion (2) of the insert is accomplished using a simple removal tool having an L-shaped extension which is inserted into a corresponding L-shaped (7) recess in the front insert, the removal tool being rotated following insertion so that the removable insert can easily be removed from the connector to expose the optical fiber termini and contacts and permit testing or cleaning.

Disclosed is a method for cleaning solder flux from connectors. A first solution comprising a monobasic ester is applied to the connectors. A second solution, which can include a solvent for a lubricant, is then applied to displace the first solvent.

A device for cleaning electrical pins and/or pin sockets, especially of electrical coupling arrangements between towing and towed vehicles, comprising an element (16) having an end spigot (24 or 36) supporting a helical spring (26 or 34) dimensioned to enter a socket (22) or fit over a pin (31) with a rotational twisting action which contracts or expands the spring and causes it to bind against the socket or pin surface with a cleaning action as it rotates.