Compagnie Industrielle Des Telecommunications Cit-alcatel

Commissariat a L'energie Atomique

Alcatel Cit

Jacques Mimeur

Robert Boirat

Philippe Faugeras

Denis Haux

Sebastien Frindel

Philippe Andrie

A valve for a vacuum enclosure, the valve comprising a valve body (1) which is hollow about an axis .DELTA. and which opens out to the outside via two opposite end openings (24, 25) of the valve body, thereby enabling the valve to be inserted in a pumping circuit, the inside of said valve body being provided by closure means constituted by a strip (7) which is movable in its own plane, which plane extends perpendicularly to the axis .DELTA. said strip being provided with at least one opening (8) and being associated with two pay-out and take-up drums (9, 10) provided with drive means, said valve body being further provided with sealing means situated between the two drums and comprising a fixed gasket (15) fixed to the valve body and situated on a first side of the strip and a moving gasket system capable of moving parallel to the axis .DELTA. and situated on the other side of the strip from the fixed gasket, the valve being characterized in that said moving gasket system includes a plurality of balls (30) which are held spaced apart from one another around a circumference by means of a rotatable cage (31), the assembly comprising said balls and said cage being disposed between a clamping ring (34) which is axially displacable and which is provided with conical depressions (35) for receiving the balls and a plane portion (36) of the valve body which is also provided with conical depressions (37) for receiving the balls, said cage (31) being associated with means (32, 33) enabling it to be rotated thorugh an angle .alpha., the clamping ring being axially slidable in sealed manner along a cylindrical bearing surface (40) inside said valve body.

Valve for a vacuum enclosure

An optical space-division switching assembly comprises a distribution assembly consisting of a stack of P distribution plates each with N guides which on the one hand, for each plate, are coupled in common to the end face of an optical element assigned to the plate and belonging to a group of P elements and, on the other hand, for the P plates, communicate with the same side of the stack in N rows of end faces, and an optical selection assembly consisting of a stack of N flat rigid opto-mechanical switches each movable between an optical element assigned to the switch and belonging to another group of N elements and the corresponding row of end faces of the guides of the plates and incorporating P guides having first ends assigned to the individual links between these guides and the corresponding optical element and second ends individually assigned to the P end faces of the guides of the plates of the corresponding row. This assembly provides for the broadcasting of P programs to N subscribers.

Optical space-division switching assembly

The device comprises, for coupling the accesses of N first elements (fa) with the accesses of N second elements (fp) an distributer assembly (10) constituted by a stack of P flat and rigid distribution plates (11) having N waveguides (h) each coupled to the access of one of the second elements (fp) and a concentrator-selector assembly (20) constituted by a stack of N flat and rigid concentration and selection plates (21) having P waveguides and including an integrated strip (31) of P photodiodes which are coupled to the ends of the P waveguides, said assemblies being assembled to each other to couple the individual waveguides together. It is particularly applicable to optically broadcasting P programs to N subscribers.

Space division optoelectronic switch device

Laser sensing means for dimensional control purposes comprising a laser sensing means, wherein it comprises a body, a sensor sliding in the body, a counterweight weighing the same as the sensor and connected to the latter by a wire passing over pulleys and sliding in the body parallel to the sensor, translation guidance means for the sensor and the counterweight, means for exerting a pressure on the sensor and means for measuring the sensor displacement.

Growing community of inventors

Veyrier du Lac, France

Jacques Mimeur