Abstract: Adapter for connection to electric current carrying rails having movable contacts for the electric connection and mechanical locking means including a button operated release mechanism to prevent incorrect insertion of the adapter in the rail.

Abstract: A light fixture having securing means for lamp globes, each shaped as two resilient arms, one arm being adapted to engage the globe inside of its opening and the other arm to engage the globe internally, thus locking the arms when the globe is in place.

Abstract: A connector for coupling electrical equipment to a conductor rail has its contacts positioned on flexible spring members which are elastically movable in both the horizontal and vertical directions, thus permitting the connector to accomodate itself to different embodiments of conductor rails. The connector can also have locking members positioned at different levels to enable the connector to be firmly fastened to conductor rails having variously-positioned attachment flanges. For grounded circuits, the connector can be provided with a twisted leaf spring as a ground connection.