Plumettaz Holding Sa

Plumettaz S.a.

Ehtp Enterprise Hydraulique Et Travaux Publics

Entreprise Hydraulique Et Travaux Publics—e.h.t.p.

Plummettaz

Ehtp Entreprise Hydraulique Et Travaux Publics

Gérard Plumettaz

Willem Griffioen

Joël Perelle

Michel Dunand

André Wacinski

Claude Trichard

Giovanni Pozzati

Olivier Perignon

Bernard Censier

Michel Cherix

Stéphane Oberli

A linear driving device with load dependent clamping capability with a reference driving element and a moveable driving element. The linear driving device being arranged for driving an elongated element located between the reference driving element and the moveable driving element at least one of which is powered to apply an axial force (Fa) and a clamping force (Fc) to the elongated element to drive it. The device includes at least one pivoting lever attached to the reference driving element by a first rotation axis and to the moveable driving element by a second rotation axis. When the elongated element is driven, the at least one pivoting lever is arranged so that the magnitude of the clamping force (Fc) depends on a predetermined angle (a) defined between a perpendicular direction to the axial force (Fa) and a reaction force passing through the first and second rotations axes.

Linear driving device with load dependent clamping capability

A method for laying a plurality of cable sections to be successively positioned in series in a buried duct, according to a flowing-pushing method using a pressurized fluid. The different cable sections are successively introduced into the duct in a single entry point comprising a laying device notably comprising an orifice for introducing a pressurized fluid, a cable section entirely introduced into the duct is pushed towards the position which it should occupy in the duct, only by the pressure of the fluid introduced by said laying device and when a cable section has reached his final position in the duct, an opening is made in the duct near to the rear of the cable section.

Method for laying a plurality of successive sections of cables in order to form a cabled connection of great length

A pig for installing a cable in a conduit, in which it comprises a body and a seal intended to follow the internal surface of the conduit, the body comprising a radially elastic tubular part on which the seal is mounted, and a support part fixed to or integral with the tubular part, the support part having a guide surface intended to guide the pig in the conduit, the diameter of the guide surface being slightly less than the maximum diameter of the seal, so that the support part radially deforms the tubular part when the pig passes through deformed parts of the conduit.

Pig for installing a cable in a conduit

The invention concerns a method for setting medium or high power electric cables () in the ground, which consists in digging a trench () evacuating the materials derived from the trench () towards a treatment device, for example by crushing, depositing at least a duct or an assembly of three installation ducts in the trench (), backfilling the trench () with the treated materials and setting in said installation duct (), at least a medium or high power electric cable () by pushing it while injecting water () under pressure into the installation duct () so as to use the water () as carrier and discharge fluid for the heat energy resulting from friction between the cable () and the installation duct ().

Method for installing a high or medium power cable in the ground

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Bex, Switzerland

Gérard Plumettaz