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Patent Agency Ranking1.发明授权Method and apparatus for increasing the sound output of an acoustic transducer 失效用于增加声学传感器的声音输出的方法和装置
公开(公告)号：US3584160A
公开(公告)日：1971-06-08
申请号：US3584160D
申请日：1969-02-17
Applicant: COMPTEURS COMP D
Inventor： JANSSEN SYLVAIN JEAN
CPC classification number: G10K11/02 , Y10S181/40
Abstract: Device for increasing the acoustic power radiated in a gas by the solid vibrating surface of a source of sonic or ultrasonic waves, constituted by a flat plate, pierced with openings at regular intervals evenly distributed and arranged in parallel relation disposed at a very short distance from the vibrant surface.
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公开(公告)号：US3517544A
公开(公告)日：1970-06-30
申请号：US3517544D
申请日：1967-02-06
Applicant: COMPTEURS COMP D
Inventor： JANSSEN SYLVAIN JEAN
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公开(公告)号：US3448605A
公开(公告)日：1969-06-10
申请号：US3448605D
申请日：1967-06-12
Applicant: COMPTEURS COMP D
Inventor： JANSSEN SYLVAIN JEAN
CPC classification number: G01N13/02
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4.发明授权Apparatus for measuring the concentration in paramagnetic gas of a gas mixture 失效用于测量气体混合物参比气体浓度的装置
公开(公告)号：US3646431A
公开(公告)日：1972-02-29
申请号：US3646431D
申请日：1969-10-24
Applicant: COMPTEURS COMP D
Inventor： JANSSEN SYLVAIN JEAN
CPC classification number: G01N27/74
Abstract: Device for measuring the paramagnetic gas concentration of a gas mixture, constituted by a pick up of general flat shape placed perpendicularly to the electric fluxes of a magnetic field having abrupt intensity variations, said pick up comprising at least one member composed of a flat metal part and an adjacent closed cellshaped metal part filled with a nonparamagnetic gas or put under a vacuum, connected to the preceding part in a region of the airgap where the induction is uniform, each of these parts respectively having equivalent sections of metal in the regions where the field intensity varies abruptly.
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