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US 4,347,456 AGranted
Sliding electrical contact devices
AssigneeEtat Francais
InventorJean-Pierre Chabrerie
Life of this patent
Estimating the term…
Abstract
Sliding electrical contact devices comprising a conducting track and a brush bearing on the track. The brush is formed by at least one bundle of stiff and very fine wires whose diameter is of about 40 microns, tightly retained in a sole piece 14, projecting from the sole piece and slidingly bearing on the track.
Claims11
An electrical contact device for current transfer comprising:
- a brush having at least one bundle of stiff wholly metal wires of a diameter less than 80 microns and sole means with which one end portion of said bundle has a tight connection retaining said end portion in a predetermined direction with respect to said sole means,
- a track arranged to be moved in operation in a direction transverse to said predetermined direction with respect to said brush,
- means for maintaining the other end portion of said bundle in rubbing contact with the track,
- and means for maintaining the brush and track in a dry non oxidizing atmosphere.
1 more element
A device according to any one of the preceding claims, wherein the brush comprises several said bundles which each have an approximately circular cross-section and which are distributed according to a regular pattern.
Dependencies are inferred from the claim text.