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公开(公告)号:FI970720A0
公开(公告)日:1997-02-20
申请号:FI970720
申请日:1997-02-20
Applicant: KIRJAVAINEN KARI
Inventor: KIRJAVAINEN KARI
IPC: B29C20060101 , B29C
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公开(公告)号:DE68920742T2
公开(公告)日:1995-09-07
申请号:DE68920742
申请日:1989-06-02
Applicant: KIRJAVAINEN KARI
Inventor: KIRJAVAINEN KARI
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公开(公告)号:FI83184C
公开(公告)日:1991-06-10
申请号:FI882653
申请日:1988-06-06
Applicant: KIRJAVAINEN KARI
Inventor: KIRJAVAINEN KARI
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公开(公告)号:AT61706T
公开(公告)日:1991-03-15
申请号:AT85850364
申请日:1985-11-12
Applicant: KIRJAVAINEN KARI
Inventor: KIRJAVAINEN KARI
IPC: H03H7/30 , B32B5/18 , B32B7/02 , H02N2/00 , H03H9/17 , H04R3/00 , H04R19/00 , H04R23/00 , H04R31/00
Abstract: The present invention concerns a dielectric film for converting the energy of an electric field or of a magnetic field into mechanical work, orfor converting mechanical work into electric energy, and a procedure for manufacturing the film. The film of the invention consists of a homogeneous, e.g. a film layer (A) foamed to a structure (C) of full-cell type and which has been oriented by stretching it in two dimensions and coated at least in part on one side or on both sides with an electrically conductive layer (B). The film is manufactured by extruding the plastic which has been made to be foams able, into tubular shape, performing intermediate cooling of the tube and reheating it, expanding the heated tube in two dimensions, metallizing the outer surfaces and cutting the tube open to become a film.
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公开(公告)号:FI76731C
公开(公告)日:1988-12-12
申请号:FI870550
申请日:1987-02-10
Applicant: KIRJAVAINEN KARI
Inventor: KIRJAVAINEN KARI
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公开(公告)号:FI884498A0
公开(公告)日:1988-09-30
申请号:FI884498
申请日:1988-09-30
Applicant: KIRJAVAINEN KARI
Inventor: KIRJAVAINEN KARI
IPC: B29C20060101 , B29C
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公开(公告)号:FI76731B
公开(公告)日:1988-08-31
申请号:FI870550
申请日:1987-02-10
Applicant: KIRJAVAINEN KARI
Inventor: KIRJAVAINEN KARI
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公开(公告)号:FI871920A0
公开(公告)日:1987-04-29
申请号:FI871920
申请日:1987-04-29
Applicant: KIRJAVAINEN KARI
Inventor: KIRJAVAINEN KARI
IPC: B29C20060101 , B29C
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公开(公告)号:DE69732801T2
公开(公告)日:2006-04-06
申请号:DE69732801
申请日:1997-11-27
Applicant: PANPHONICS OY TAMPERE , KIRJAVAINEN KARI
Inventor: KIRJAVAINEN KARI
IPC: G10K11/178 , A61F11/14
Abstract: The invention relates to a method and an apparatus for sound processing, where sound is attenuated by measuring it and by producing with an actuator a sound field of opposite sign in view of the original sound field. A desired value signal (I) is supplied to the actuator which reproduces the signal. To the actuator is attached a sensor, measuring sound pressure, and the difference of the sensor signal (B) and the desired value signal (I) is applied as high gain feedback to the actuator. As a consequence, sound not pertaining to the desired value signal (I) can be attenuated in a simple manner, and sound in accordance with the desired value signal (I) can be produced simultaneously with the same apparatus.
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公开(公告)号:AT291267T
公开(公告)日:2005-04-15
申请号:AT97913229
申请日:1997-11-27
Applicant: PANPHONICS OY , KIRJAVAINEN KARI
Inventor: KIRJAVAINEN KARI
IPC: A61F11/14 , G10K11/178
Abstract: The invention relates to a method and an apparatus for sound processing, where sound is attenuated by measuring it and by producing with an actuator a sound field of opposite sign in view of the original sound field. A desired value signal (I) is supplied to the actuator which reproduces the signal. To the actuator is attached a sensor, measuring sound pressure, and the difference of the sensor signal (B) and the desired value signal (I) is applied as high gain feedback to the actuator. As a consequence, sound not pertaining to the desired value signal (I) can be attenuated in a simple manner, and sound in accordance with the desired value signal (I) can be produced simultaneously with the same apparatus.
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