摘要:
The invention relates to the manufacture of electromechanical transducers with at least one element made from a polymer material shaped and polarized so as to obtain an active self-supporting structure having a nondevelopable surface and to a manufacturing process which consists in shaping a structure already coated with metalizations, so that the electric polarizing field may be applied to the structure during shaping and until return thereof to ambient temperature.
摘要:
A coupling for connecting fuel pipes in an aircraft is provided. At least one of the fuel pipes is capable of movement with respect to the coupling. The coupling comprises a pipe end fitting and a socket arrangement. The pipe end fitting is located within the socket arrangement. At least one resiliently flexible electrical contact is located between the pipe end fitting and the socket arrangement. The coupling may thus form a flexible coupling electrically connecting two pipes to prevent static electricity build-up whilst permitting movement between the pipes.
摘要:
An X-ray emission device having an X-ray tube and a protective enclosure filled with an electrically insulating liquid in which the X-ray tube is placed. The device includes at least one chamber connected to the protective enclosure that traps and purges gas bubbles contained or dissolved in the liquid filling the protective enclosure.
摘要:
Switching apparatus for automatically interconnecting a first unit with a second unit, the apparatus having a first input/output assembly connected to the first unit and a second input/output assembly connected to the second unit, and including both at least one switch card each provided with at least one switch element, and a control unit for the card for establishing or not establishing interconnections between the first and second units as a function of determined instructions issued to said control unit, the control unit also including means for enabling the physical configuration of said switching apparatus to be input, and means suitable, once said input has been performed, for automatically interconnecting the first unit with the second unit in accordance with the instructions issued to the control unit by a user.
摘要:
A solenoid operated valve with a magnetic can or jacket with a closed end received over the coil and retained by crimping over a tubular flanged pole washer received over the opposite end of the coil. An inlet orifice is formed in the closed end of the jacket and a radial valving passage communicates the inlet orifice with an outlet between the coil and jacket. A moveable magnetic armature is disposed within the coil and has a non-magnetic planar valving member provided in one end for seating around the inlet orifice when the solenoid is energized.
摘要:
A piezoelectric transducer including a polarized piezoelectric material film, which also has a reinforcing material incorporated into the mass and which prevents any deformation of the film in certain given directions.The invention also relates to a pressure sensor using such a transducer.This sensor can be used both as a pressure sensor and as a pressure gradient measuring device.
摘要:
An overload manager device including a monitoring function for evaluating successive values of the server operation parameter as a function of time, a first logic function capable of evaluating a first condition, which involves whether the server operation parameter passes a first threshold value in a first direction, a second logic function capable of evaluating a second condition, which involves whether a server operation parameter passes a second threshold value in a second direction, with the second direction being opposite to the first direction, and extending from the first threshold value to the second threshold value, and a request supervisor operable for starting rejection of input requests, upon verification of a third condition, related to the verification of at least one of the first and second conditions, and terminating rejection of the input requests upon verification of a fourth condition related to the verification of the second condition.
摘要:
An overload manager device including a monitoring function for evaluating successive values of the server operation parameter as a function of time, a first logic function capable of evaluating a first condition, which involves whether the server operation parameter passes a first threshold value in a first direction, a second logic function capable of evaluating a second condition, which involves whether a server operation parameter passes a second threshold value in a second direction, with the second direction being opposite to the first direction, and extending from the first threshold value to the second threshold value, and a request supervisor operable for starting rejection of input requests, upon verification of a third condition, related to the verification of at least one of the first and second conditions, and terminating rejection of the input requests upon verification of a fourth condition related to the verification of the second condition.
摘要:
A facility including molds into each of which a latex foam is introduced and a furnace into the vulcanizing chamber of which the molds are introduced with a view to vulcanizing the latex foam for the formation of articles. The facility further includes a mold filling station for filling the molds with latex foams, a stripping station for removing the articles and a washing unit and drying unit for the stripped articles. The vulcanizing chamber is embodies by a shell arranged at a distance from the side walls and above the furnace, which together with the latter delimits an enclosed space which communicates with the vulcanizing chamber by way of passages embodied in the lower part. The invention provides for the upper part to have at least one opening for introducing steam which communicates with the enclosed space and for the lower part to have at least one opening for extracting the steam and evacuating the condensed water.
摘要:
The invention relates to an electro-acoustic transducer using a self-supporting active radiating membrane made from a polymer material. The invention provides a transducer in which a resilient shape restoring member fixed to the case capped by the radiating membrane takes on the shape of the concave parts of the membrane, so as to oppose the definitive staving-in of the membrane by an accidental thrust force acting on the dome shaped protuberance on its outer face and restore the member to its initial shape when the force is removed.