| 摘要 |
PCT No. PCT/SE92/00730 Sec. 371 Date Apr. 21, 1994 Sec. 102(e) Date Apr. 21, 1994 PCT Filed Oct. 20, 1992 PCT Pub. No. WO93/07986 PCT Pub. Date Apr. 29, 1993.A swivel connection for attachment to robot arms is disclosed for supplying a fluid to an associated tool mounted on the robot arm. The swivel connection includes a rotatable cylindrical hub, an attachment device mounted on one surface of the hub for rotation therewith, a non-rotatable coupler surrounding the cylindrical hub, first and second concentric contacts juxtaposed with the coupler and electrically isolated from each other and from the coupler, a cover on a second surface of the hub and rotatable therewith, first and second concentric rings surrounding the cover, the first concentric ring juxtaposed with the first concentric contact and the second concentric ring juxtaposed with the second concentric contact, the first and second concentric rings being electrically isolated from each other and from the cover, and the coupler, the hub, the cover, and the first and second concentric rings each including channels extending respectively therethrough so that a fluid can be supplied from a first end of a channel in the coupler to a second end of the channel in the ring during rotation of the swivel connection.
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