Lubrication – Lubricators – Belt – cable – chain or conveyor
Patent
1992-01-28
1993-05-04
Lazarus, Ira S.
Lubrication
Lubricators
Belt, cable, chain or conveyor
184 551, 118306, 118408, 427238, F16N 730
Patent
active
052072924
ABSTRACT:
A process for simultaneously lubricating the interior wall of a underground conduit, while by use of compressed air, placing in the conduit a cable along the entire length of the conduit. The cable is drawn through the conduit by a puller, or comparable device, which is connected to the head of the cable, and rests in the conduit in a substantially air tight relation. This puller transmits a traction force to draw the cable through the conduit. The internal surface of the conduit is lubricated substantially uniformly over the entire length as the puller travels along the conduit by means of a reservoir of lubricant of a variable volume. This reservoir is at the rear of the puller, but in front of the cable. The lubrication and placement of the cable is along the entire length of the conduit. The invention also concerns an apparatus for carrying this process.
REFERENCES:
patent: 3211573 (1965-10-01), Hight et al.
patent: 3322559 (1967-05-01), Eskijian
patent: 3394025 (1968-07-01), McCune
patent: 4108279 (1978-08-01), Marcell
patent: 4137623 (1979-02-01), Taylor
patent: 4397890 (1983-08-01), Kinumoto et al.
Beaumanoir Yvon
Pecot Alain
Cariaso Alan
France Telecom Etablissement (Autonome de Droit Public)
Lazarus Ira S.
Plottel Roland
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