Connector inserts and connector receptacles that have a small form factor, readily mate when brought into proximity to each other, and disconnect when subjected to a non-axial force.

An electrical contact has a contact surface adapted to contact a mating contact. The contact surface has a plurality of rotatable rolling contact bodies made of an electrically conductive material.

An electric contact for an electrical plug connection includes a receptacle open against a plugging direction and adapted to receive a mating contact in the plugging direction and a plurality of roller contact bodies made of an electrically conductive material and projecting into the receptacle. The roller contact bodies are rotatably held on at least a pair of opposing sides of the receptacle and each form a part of a contact surface adapted to contact the mating contact.

A technique facilitates transmission of electric signals across well components which move relative to each other in a wellbore environment. The well components are movably, e.g. rotatably, coupled to each other via one or more conductive bearings. Each conductive bearing has a conductive rolling element which enables relative movement, e.g. rotation, between the well components while simultaneously facilitating transmission of electric signals through the bearing. Portions of the bearing are coupled to each of the well components, and those bearing portions may be connected with electric leads to enable flow of electric signals through the bearing during operation of the system downhole.

Connector inserts and connector receptacles that have a small form factor, readily mate when brought into proximity to each other, and disconnect when subjected to a non-axial force.

This relates to an electrical rotary joint device configured to equip an energy exploitation installation including a first part having an electrical connector and a first electrical track electrically connected to the first connector, a second part having a second electrical connector and a second electrical track electrically connected to the second connector, and an electrical interconnection mechanism configured to electrically interconnect the first and second electrical tracks, with the first part and the second part being movable with respect to each other and defining between them a closed internal chamber in which the first and second electrical tracks and the electrical interconnection mechanism are housed, the latter including electrical contact members that are housed, in particular prestressed, between the first and second electrical tracks and are configured to form rolling deformable contacts between the first and second electrical tracks.

A mechanical link (100, FIG. 5), the mechanical link comprising a first arm (120), a second arm (140) and an interconnection member (160), wherein: the first arm is rotatable about a first axis of the interconnection member; the second arm is rotatable about a second axis of the interconnection member, the second axis being orthogonal to the first axis; and wherein: a flexible member (400) extends along the first and second arms and is adapted to accommodate rotation of the arms about the first and second axes, the flexible member having a single coiled portion (440) which is received within the interconnection member such that the coiled portion can coil and uncoil to accommodate rotation of the first arm, wherein the coiled portion is further configured to twist about an axis of the flexible member to accommodate rotation of the second arm.

A rotatable device powered by continued electricity supply, having a supporting shaft, a bearing, a rotary body, a mounting seat, an electrical conductive member, and a brush. The bearing includes an outer ring and an inner ring. The rotary body is connected to the outer ring. One of the electrical conductive member and the brush is connected to the rotary body, and another one of the electrical conductive member and the brush is connected to the mounting seat. A windmill that uses the rotatable device is also provided.

A system of soft contacting rotational interfaces with long service life, maintenance free, and high reliability, comprises a RF rotary joint and a single channel fiber optic rotary coupler and more particularly, a system having a plurality of conductive fiber brush bundles, a fiber optical wire and a coaxial conductor for transferring RF and optical signal(s) concurrently between relatively rotatable objects.

The rotary connector includes: an outer peripheral electrode; an inner peripheral electrode which is inserted through the outer peripheral electrode and is disposed to be rotatable; a plurality of roller current collectors which are arranged to make a planetary motion between the outer peripheral electrode and the inner peripheral electrode; a bearing that axially supports the inner peripheral electrode to be rotatable; and a bearing holder that holds the bearing, wherein bent portions are provided at a passage extending from a contact portion between the inner peripheral electrode and the roller current collector to the bearing.