Coupling device

Claim 1

APPARATUS FOR SUBSTANTIALLY HERMETICALLY CONNECTING THE INTERIOR PORTION OF A HOLLOW BASING CHUCK TO A GAS MOVING MEANS TO CAUSE A FLOW OF GAS THROUGH THE INTERIOR PORTION OF SUCH BASING CHUCK, SAID APPARATUS COMPRISING: (A) FIRST SEALING MEANS CONNECTING TO SAID BASING CHUCK AND PROVIDED WITH FIRST CONDUIT MEANS COMMUNICATING WITH THE INTERIOR PORTION OF SAID BASING CHUCK; (B) SECOND SEALING MEANS NORMALLY DISPOSED IN SPACED RELATION WITH RESPECT TO SAID FIRST SEALING MEANS AND PROVIDED WITH SECOND CONDUIT MEANS; (C) ELECTROMAGNETIC MEANS MOUNTED ON SAID GAS MOVING MEANS AND PROVIDED WITH THIRD CONDUIT MEANS RECIPROCABLE THEREIN AND COMMUNICATING WITH SAID GAS MOVING MEANS, AND SAID THIRD CONDUIT MEANS CONNECTED TO AND COMMUNICATING WITH SAID SECOND CONDUIT MEANS; (D) MAGNETIC MEANS RECIPROCABLE WITH RESPECT TO SAID ELECTROMAGNETIC MEANS AND HAVING SAID SECOND AND SAID THIRD CONDUIT MEANS CONNECTED THERETO, SAID MAGNETIC MEANS ALSO RESILIENTLY CONNECTING TO SAID SECOND SEALING MEANS; (E) SAID MAGNETIC MEANS OPERABLE BY MEANS OF MAGNETIC ATTRACTION WHEN ASID ELECTROMAGNETIC MEANS IS DEENERGIZED TO MOVE SAID SECOND SEALING MEANS INTO NORMAL SPACED RELATION WITH RESPECT TO SAID FIRST SEALING MEANS; AND (F) SAID MAGNETIC MEANS OPERABLE BY MEANS OF MAGNETIC REPULSION WHEN SAID ELECTROMAGNETIC MEANS IS ENERGIZED TO MOVE SAID SECOND SEALING MEANS INTO SUBSTANTIALLY HERMETIC ENGAGEMENT WITH SAID FIRST SEALING MEANS TO JOIN IN COMMUNICATION SAID SECOND CONDUIT MEANS AND SAID FIRST CONDUIT MEANS TO PERMIT GAS FLOW FROM THE INTERIOR OF SAID BASING CHUCK TO SAID GAS MOVING MEANS.