Sleeve and mobile connection for electric supply

Details Sleeve and mobile connection for electric supply Sleeve and mobile connection for electric supply

1998-10-13

2001-02-13

Morano, S. Joseph (Department: 3617)

Electricity: transmission to vehicles

Conductors

Conduit

C191S03300R, C191S039000, C191S040000, C191S02200C, C191S02300R, C191S025000

Reexamination Certificate

active

06186296

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to the field of the supply of electrical current to movable mechanisms such as gantries, monorails, hoists, small machine tools of the drill type, screwing machines, or the like, and other movable devices, and has for its object an electrical supply device with a conduit and movable electrical connector.
BACKGROUND OF THE INVENTION
Conduits which are adapted for any application requiring a movable low voltage electrical connector, for currents below 260 amperes and for speeds of movement less than 600 meters per minute, are generally in the form of profiles of synthetic material enclosing within their inner walls several electrical conductors and having standard lengths.
Existing conduits most often have right angle or oblique end sections. The electrical insulation of the junctions is ensured by means of joint covers. The electrical continuity is obtained either by the conductors being of single length within the conduits, or, when the conductors are premounted in the conduits, by means of connectors or a screw-nut system.
So as to permit good electrical conduction, there has been proposed in FR-A-2 420 864, a freely movable mounting for conductors in the conduit sections and providing the ends of said conductors with complementary shapes to form connection plates.
These known supply conduits however have the drawback of being of relatively great weight, whilst their rigidity, both transverse and longitudinal, is low. As a result, it is necessary to provide a larger number of supports so as to guarantee good retention without deformation of these conduits, as well as to avoid difficulties by preventing the insertion of fingers within the synthetic material profile.
Moreover, the existing joint covers at the end connections of the conduits are in the form of half shells assembled by bolting. Such an arrangement of these joint covers of course permits a correct insulation of the connections but however their emplacement or their removal requires a relatively long operation, which consequently increases the cost of the procedure.
Moreover, the suspensions of these conduits are most often comprised by several elements and give rise to the same mounting and unmounting drawbacks as the joint covers.
Finally, the collector carriages forming the movable electrical connectors are provided with contact brushes, whose securement on said carriages is ensured by screw means and by retention means coacting with these latter.
SUMMARY OF THE INVENTION
The present invention has for its object to overcome these drawbacks by providing an electrical supply device with a conduit and movable electrical connector, whose conduit has better longitudinal and transverse rigidity whilst being lightened relative to existing conduits and whose mounting of the other elements is greatly facilitated.
To this end, this supply device, which is essentially constituted by sections of conduit in an insulating material, in which are disposed electrical connectors interconnected at the level of the junctions of the conduit sections, by joint covers for connecting the conduit sections insulating the electrical connections of said electrical conductors, by at least one supply casing in line or at the end, by closure covers of the ends of the electrical supply line formed by the conduit sections, by suspensions for the conduit sections, and by at least one collector carriage permitting directing the electrical current toward any fixed or movable receiver, characterized in that each conduit section of insulating material is constituted by an insulating envelope of inverted U shape, for receiving the electrical conductors and for guiding the collector carriage or carriages, this envelope having hollow wall structure and being provided, as the case may be, in its lower portion with a flexible anti-dirt joint.


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