31results about How to "Simple and economical way" patented technology

A device which is used to cool the power electronics of a vehicle, by circulating a liquid through a cooling circuit which is mounted under a plate bearing the power electronics. According to the invention, the cooling circuit can include deflectors and / or turbulators in order to increase the exchange coefficient between the cooling circuit and the cooling liquid. The invention also relates to a method of producing the device.

A coupling grating formed as a line grating with a grating period between 100 nm and 2500 nm, a substrate (1) is covered with a photoresist layer (10) and exposed for instance at the Lithrow angle (ΘL) or at 0° to a mercury-vapour lamp (11) via a folding mirror (13, 13′) through a phase mask (14) in the near field of which the photoresist layer is arranged, then structured by reactive ion etching and provided with a transparent layer by reactive DC magnetron sputtering, particularly pulsed DC sputtering or AC-superimposed DC sputtering. The phase mask (14) is structured in advance with the laser two-beam interference method. The process is particularly suited for the production of optical elements, particularly evane-scent field sensor plates and optical couplers for communications technology which can be employed in particular as filters for wavelength multiplexing in fibre-optic networks.

The invention relates to a method for production of at least one device (2, 30, 48), defining a volume (8), for retaining a fluid or a sensitive material susceptible to a change in physical properties, particularly optical properties under the effect of application of a voltage, or in electrical properties under the effect of the application of a constraint or an irradiation. Said device (2, 30, 48) comprises at least one first front substrate (4, 38, 56) and at least one second rear substrate (6, 32, 50) held at a constant distance from each other, said two substrates (6, 32, 50; 4, 38, 56) being connected by a sealed joint (24, 46, 72) which defines the retention volume (8) for the sensitive material or fluid. The method is characterised in comprising the following steps: forming the structure of at least one septum (12, 44, 66) on one of the substrates (6, 32, 50) which defines the volume (8) for retention of the sensitive medium or fluid with the internal lateral face thereof, bringing the second substrate (4, 38, 56) together with the first substrate (6, 32, 50), introduction of a jointing material which can run into the gap (22), defined by the lateral external face of the septum (12, 44, 66) and the two superimposed substrates (6, 32, 50; 4, 38, 56) until at least a part of the volume of said gap (22) is occupied by the sealing material and solidification of the sealing material such as to generate the sealing joint (26, 46, 72).