Vacuum-actuated apparatus and method for drawing lines through a pipe or conduit

Claim 2

FOR USE WITH A CONDUIT HAVING A PAIR OF OPEN ENDS, APPARATUS FOR THREADING A LINE THROUGH A CONDUIT, COMPRISING IN COMBINATION, A PORTABLE ELECTRIC VACUUM CLEANER OF THE WET PICK-UP TYPE AT ONE END OF THE CONDUIT, NOZZLE MEANS IN RELATIVE AIR-SEALING ENGAGEMENT BETWEEN THE SAID ONE END OF THE CONDUIT AND SAID PORTABLE ELECTRIC VACUUM CLEANER, A CARRIER INSERTED AT THE OTHER END OF THE CONDUIT, AND A LINE SECURED TO SAID CARRIER, WHEREBY SAID PORTABLE ELECTRIC VACUUM CLEANER MAY BE ACTUATED TO DRAW SAID CARRIER AND SAID LINE SECURED THERETO THROUGH SAID CONDUIT SAID CARRIER BEING DRAWN BY THE VACUUM FLUSH AGAINST SAID NOZZLE MEANS, THEREAFTER ENABLING SAID CARRIER AND SAID LINE TO BE WITHDRAWN FROM THE CONDUIT BY REMOVING SAID NOZZLE MEANS FROM THE CONDUIT, AND WHEREBY THE CONDUIT MAY BE CLEANED OF MOISTURE AND DEBRIS AHEAD OF DRAWING SAID CARRIER THROUGH THE CONDUIT.

Claim 3

FOR USE WITH A CONDUIT HAVING A PAIR OF OPEN ENDS, APPARATUS FOR THREADING A LINE THROUGH THE CONDUIT, COMPRISING IN COMBINATION, AT LEAST ONE PORTABLE ELECTRIC VACUUM CLEANER OF THE WET PICK-UP TYPE AT ONE END OF THE CONDUIT, FIRST NOZZLE MEANS IN RELATIVE AIR-SEALING ENGAGEMENT BETWEEN THE SAID ONE END OF THE CONDUIT AND SAID PORTABLE ELECTRIC VACUUM CLEANER, A CARRIER INSERTED AT THE OTHER END OF SAID CONDUIT, A LINE SECURED TO SAID CARRIER AND EXTENDING BEYOND THE CONDUIT, AT LEAST ONE PORTABLE ELECTRIC VACUUM CLEANER UTILIZED AS A BLOWER AT THE SAID OTHER END OF THE CONDUIT, AND SECOND NOZZLE MEANS IN RELATIBE AIR-SEADLING ENGAGEMENT BETWEEN THE SAID OTHER END OF THE CONDUIT AND SAID PORTABLE ELECTRIC VACUUM CLEANER WHICH UTILIZED AS A BLOWER, SAID LINE BEING PINCHED SLIGHTLY BETWEEN SAID SECOND NOZZLE MEANS AND SAID CONDUIT, WHEREBY SAID PORTABLE ELECTRIC VACUUM CLEANERS MAY BOTH BE ACTUATED TO PROPEL SAID CARRIER AND DRAW SAID LINE THROUGH SAID CONDUIT.

Claim 4

FOR USE WITH A CONDUIT HAVING A PAIR OF OPEN ENDS, APPARATUS FOR THREADING A LINE THROUGH THE CONDUIT, COMPRISING IN COMBINATION, AT LEAST ONE PORTABLE ELECTRIC VACUUM CLEANER OF THE WET PICK-UP TYPE AT ONE END OF THE CONDUIT, FIRST NOZZLE MEANS IN RELATIVE AIR-SEALING ENGAGEMENT BETWEEN THE SAID ONE END OF THE CONDUIT AND SAID PORTABLE ELECTRIC VACUUM CLEANER, A CARRIER INSERTED AT THE OTHER END OF SAID CONDUIT, A LINE SECURED TO SAID CARRIER AND EXTENDING BEYOND THE CONDUIT, AT LEAST ONE PORTABLE ELECTRIC VACUUM CLEANER UTILIZED AS A BLOWER AT THE SAID OTHER END OF THE CONDUIT, AND SECOND NOZZLE MEANS IN RELATIBE AIR-SEADLING ENGAGEMENT BETWEEN THE SAID OTHER END OF THE CONDUIT AND SAID PORTABLE ELECTRIC VACUUM CLEANER WHICH UTILIZED AS A BLOWER, SAID LINE BEING PINCHED SLIGHTLY BETWEEN SAID SECOND NOZZLE MEANS AND SAID CONDUIT, WHEREBY SAID PORTABLE ELECTRIC VACUUM CLEANERS MAY BOTH BE ACTUATED TO PROPEL SAID CARRIER AND DRAW SAID LINE THROUGH SAID CONDUIT.