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Title: Low-drag electrical-contact arrangement for maintaining continuity between horizontally movable members

This invention is a low-drag electrical contact arrangement for establishing continuity between upper and lower spaced members which are subject to relative horizontal movement. In one aspect, the invention comprises an electrical commutating arrangement which includes a horizontally disposed linear electrical commutator. A horizontally movable electrically conductive pedestal is positioned below the commutator and defines a clearance therewith. The pedestal is formed with a cavity confronting the commutator. In the cavity is a bead of electrical conductive liquid, the bead being characterized by an upwardly convex meniscus portion which extends across the clearance and contacts the commutator. The surface tension of the bead is sufficient to maintain the bead intact when the commutator and pedestal are displaced horizontally at speeds from zero to at least twelve inches a minute. This arrangement provides a significant advance in highly precise machining processes, such as diamond-turning, where precision is limited by the drag imposed by conventional commutators of the carbon-brush type.
Inventors:
; ;
Issue Date:
OSTI Identifier:
5678461
Assignee:
Dept. of Energy TIC; NTS-82-003990; ERA-07-030405; EDB-82-072507
Application Number:
ON: DE82004466
Contract Number:
W-7405-ENG-26
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; CUTTING TOOLS; ELECTRIC CONTACTS; POSITIONING; DESIGN; SLIDING FRICTION; ELECTRICAL EQUIPMENT; EQUIPMENT; FRICTION; TOOLS; 420200* - Engineering- Facilities, Equipment, & Techniques