Insulated electric cable and reel assembly

Claim 1

IN COMBINATION: A FLEXIBLE, INSULATED ELECTRIC CABLE FOR CONDUCTING ELECTRIC POWER TO AN APPARATUS MOVABLE BETWEEN A PLURALITY OF WORK LOCATIONS; A REEL FOR SAID CABLE; A HOLLOW AXLE; MEANS MOUNTING SAID AXLE FOR ROTATION; MEANS MOUNTING SAID REEL ON SAID AXLE FOR ROTATION THEREWITH; MEANS NORMALLY URGING SAID REEL IN A FIRST ROTATIVE SENSE TOWARD A REST CONDITION; A CONDUIT IN COMMUNICATION WITH SAID HOLLOW AXLE; SAID CABLE BEING WOUND AROUND THE CIRCUMFERENCE OF SAID REEL AND HAVING ONE END EXTENDING FROM SAID REEL FOR CONNECTION TO THE ELECTRIC-EXTENDING FROM SAID REEL ANOTHER END EXTENDING THROUGH SAID AXLE AND SAID CONDUIT FOR CONNECTION TO A POWER SOURCE; SAID CABLE INCLUDING A PORTION IN SAID AXLE AND A PORTION IN SAID CONDUIT; MEANS BETWEEN THE AXLE AND THE CONDUIT FOR LOCKING THE CABLE PORTION IN THE CONDUIT AGAINST ROTATION WHILE PREMITTING ROTATION OF THE CABLE PORTION IN THE AXLE; SAID AXLE MOUNTING MEANS INCLUDING MEANS MOUNTING THE AXLE AND REEL FOR MOVEMENT IN A SECOND ROTATIVE SENSE, OPPOSITE SAID FIRST ROTATIVE SENSE, IN RESPONSE TO AN UNWINDING PULL ON SAID CABLE; SAID FLEXIBLE CABLE BEING CAPABLE OF TWISTING A PREDETERMINED TWIST WITHOUT BEING DAMAGED; SAID CABLE PORTION IN THE AXLE NORMALLY BEING TWISTED, RELATIVE TO THE CABLE PORTION IN THE CONDUIT, SAID PREDETERMINED TWIST IN SAID FIRST ROTATIVE SENSE WHEN THE REEL IS IN SAID REST CONDITION; THE CIRCUMFERENCE OF THE REEL BEING AT LEAST ABOUT D/2F WHERE D EQUALS THE DISTANCE BETWEEN THE REEL AND THE WORK LOCATION FARTHEST FROM THE REEL, AND F EQUALS SAID PREDETERMINED TWIST; WHEREBY SAID CABLE PORTION IN THE AXLE ENDS UP TWISTED NO MORE THAN SAID PREDETERMINED TWIST IN SAID SECOND ROTATIVE SENSE, WHEN THE CABLE IS UNWOUND.