Dosatron International

Stephane Urrutia

A hydraulic machine comprising the following: an envelope ( ); a differential piston ( ) consisting of two parts ( ) which have a different diameter and are able to move in two corresponding chambers ( ); hydraulic switching means which are driven by the piston ( ) and can take up two stable positions in relation to the piston; control means for a rapid change in the position of the switching means including elastic means (E); and releasing means that can release the energy accumulated by the elastic means at the end of the travel and result in an abrupt change in the position of the switching means. The switching means are supported by a side-walled ( ) lantern ring ( ) that is coaxial to the piston and is driven by the piston but which can take up two different stable positions in relation to the piston and elastic means (E) are disposed inside the lantern ring ( ) and are internally guided by the side wall ( ) of said lantern ring ( ).

Reciprocating differential hydraulic machine, especially a differential hydraulic machine

The connecting rod ( ) for a knuckle joint device with three parallel axes comprises a substantially U-shaped center part ( ), whereby the lower transversal branch ( ) thereof constitutes a third articulated axis (X ) of a release device and said branch ( ) is connected at a substantially right angle to the side branches ( ) and elastic deformation is possible, the side branches extend as far as the upper end thereof by means of segments ( ) that are bent inwards and are parallel to the transversal branch, whereby said segments ( ) display torsional elasticity around the geometric axis thereof such that a rotational return movement is possible on the side ranches ( ) around said geometrical axis and the second axis (X ) of the knuckle joint device.

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Baurech, France

Stephane Urrutia