Abstract: Embodiments provide a multilayer printed circuit board intended to connect electronic components, the board comprising a stack of a plurality of conductive layers, the conductive layers comprising two surface layers and one or more internal layers, the board comprising one or more counterbored holes, each counterbored hole comprising a portion with metallization opening onto one of the two surface layers and a portion without metallization opening onto the other surface layer; the multilayer printed circuit board may advantageously comprise one or more metal pads, each metal pad being joined to one of the two surface layers so as to occult the portion without metallization of a corresponding counterbored hole.

Abstract: A locking cover for a dead bolt lock assembly that permits a user to put it in one of three positions: neutral, locked and unlocked. The cover in the neutral position permits the operation of the bolt lock assembly normally. The other positions limit the rotational travel of the actuating shaft to one quarter of a turn. The actuating shaft is rotated by turning the locking cover that includes a central tubular cylinder for selective engagement with the actuating shaft. A pin mounted on the interior of the cover is receivable within one of three holes on an annular base plate that limits the rotation of the actuating shaft.

Abstract: The attachment device incorporates a bearing zone (78) and a projection (80) formed in the web (16) of a shoe of a drum brake. A portion (68) of the component (46) to be attached to the shoe is retained in a working position between the bearing zone (78) and the projection (80) by a spring (82).