Abstract: Aconveyer for treating hollow bodies, comprising several identical treatment stations (12, 13) that process at least one hollow body, whereby the respective treatment station for a given treatment stage communicates with a pressure source via distribution means that include a tight revolving extention. The invention is characterized in that the machine includes at least two independent and equivalent pressure sources (A1, A2) for the given treatment stage. The invention is also characterized in that it is divided up into the same number of treatment stations (12, 13) as the number of pressure sources existing for the machine and in that the distribution device (18) are such that each pressure source (A1, A2) is associated with a specific group.

Abstract: An oven in a production facility for thermoplastic receptacles, including a conveyor chain which is provided with gripping devices (16), whereby each gripping device engages axially with the neck of a receptacle blank in order to transport it into the oven. The gripping devices are displaced axially by a mechanism which is provided with an arm (44) which can move along a path that is substantially parallel to the axial direction (An) in which gripping takes place and which bears an interface element (40) which is designed to come into contact with the gripping device (30). The interface element (40) is movably mounted on the arm (44) to enable slip-free contact with the gripping device while it is immobilized in relation to the arm according to the axial direction in which gripping occurs.

Abstract: The invention concerns a device for transferring bodies (9) supported by plates (A.sub.i, B.sub.i) followed in succession in a mobile curved line; the plates are grouped in successive pairs (A.sub.i, B.sub.i) joined by a horizontal shaft (13) enabling their mutual rotation; the adjacent plates of two successive pairs (B.sub.i-1, A.sub.i ; B.sub.i, A.sub.i+1) are coupled and articulated about at least one vertical rotation axis (2); further the horizontal shaft (13) is preferably arranged such that there is a clearance between the plates (A.sub.i, B.sub.i) so that they can slope with respect to each other perpendicularly to said horizontal and vertical axes.

Abstract: A device for blow molding or stretch-blow molding containers from thermoplastic preforms. The device comprises a book mold (2) and actuating means (5) for opening and closing the two pivotable mold halves (3), including a movable arm (7) freely rotatable about an axis (8) and secured to the two mold halves (3), and drive means synchronized with the feed rate of the preforms into the mold and designed to actuate guide means having a cam (13) and a cam follower (12) for moving the arm (7) to control the opening and closing of the mold (2).