Implements or apparatus for applying pushing or pulling force – Method or apparatus for placement of conductive wire – By fluid pressure differential in conduit
Patent
1987-06-01
1988-11-08
Watson, Robert C.
Implements or apparatus for applying pushing or pulling force
Method or apparatus for placement of conductive wire
By fluid pressure differential in conduit
B66F 300
Patent
active
047830549
ABSTRACT:
A pneumatic device for fitting cables in a tube with improved unit safety in the event of excess pressure, comprises a capsule adapted to be introduced inside a tube and connected to a line used to pull the cable inside the tube. A unit (9) has a connection (20) to a compressed air source and a compressed air outlet connector (18) adapted to be connected in a substantially sealing-tight relationship to one of the ends of the tube. The unit comprises a distributor (19, 23) for distributing compressed air to the outlet connector (18), this distributor co-operating with discharge structure (32, 28, 29) to discharge the compressed air from the unit (9) in the event of an excess pressure downstream of the unit outlet connector (18).
REFERENCES:
patent: 3179375 (1965-04-01), Hamrick
patent: 3301531 (1967-01-01), Corsiglia
patent: 4018421 (1977-04-01), Tallman
patent: 4498659 (1985-02-01), Brockelsby
Morel Didier
Morel Jacques
Establissements Morel - Ateliers Electromecaniques De Favieres
Watson Robert C.
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