22.
    发明专利
    未知

    公开(公告)号:NO932389D0

    公开(公告)日:1993-06-30

    申请号:NO932389

    申请日:1993-06-30

    Applicant: IBM

    Abstract: Disclosed is a combined antenna and helicopter rotor blade 101. The antenna comprises one or more electrically non-conductive rotor blades 101, each having an electrical conductor 210, 310 positioned parallel to the major axis of a respective rotor blade 101. A connection means 410, 412, 510, 521, 620, 623 is provided to connect the antenna to apparatus for the reception or transmission of radio waves which is located in the fuselage 102. Also disclosed is a communications system including apparatus for the transmission or reception of radio waves.

    Magnetic computer mouse
    23.
    发明专利

    公开(公告)号:GB2286034A

    公开(公告)日:1995-08-02

    申请号:GB9401765

    申请日:1994-01-31

    Applicant: IBM

    Abstract: A variable magnetic field between the mouse 300 and a ferrous surface 310 provides a down force that stabilises the position of the mouse. The mouse 300 may contain an electromagnetic coil 306 and the strength of the down force may be continuously controlled by an operator, via a trigger control 104 which varies the current through the coil 306. In an alternative embodiment, the magnetic field is provided by a permanent magnet. The magnetic field may, alternatively, be provided by the work surface and the mouse may include a ferrous plane. The mouse 300 to be used for display cursor control in environments where high levels of vibration and rapid motional changes make a conventional mouse unusable.

    Directional HF antenna for a helicopter

    公开(公告)号:AU4173893A

    公开(公告)日:1994-02-10

    申请号:AU4173893

    申请日:1993-07-05

    Applicant: IBM

    Abstract: Disclosed is a combined antenna and helicopter rotor blade 101. The antenna comprises one or more electrically non-conductive rotor blades 101, each having an electrical conductor 210, 310 positioned parallel to the major axis of a respective rotor blade 101. A connection means 410, 412, 510, 521, 620, 623 is provided to connect the antenna to apparatus for the reception or transmission of radio waves which is located in the fuselage 102. Also disclosed is a communications system including apparatus for the transmission or reception of radio waves.

    HF antenna for a helicopter.
    26.
    发明专利

    公开(公告)号:GB2269482A

    公开(公告)日:1994-02-09

    申请号:GB9216585

    申请日:1992-08-05

    Applicant: IBM

    Abstract: An antenna arrangement for a helicopter 100 comprises one or more electrically non-conductive rotor blades 101, each having an electrical conductor (210, 310, Fig 2) positioned parallel to the major axis of a respective rotor blade 101. Means are provided to connect the antenna to apparatus for the reception or transmission of radio waves which is located in the fuselage 102. The electrical conductor may be embedded within or affixed to the surface of the rotor blade or it may be a surface coating. The electrical conductor may also be used as a heater filament.

    27.
    发明专利
    未知

    公开(公告)号:NO932389L

    公开(公告)日:1994-02-07

    申请号:NO932389

    申请日:1993-06-30

    Applicant: IBM

    Abstract: Disclosed is a combined antenna and helicopter rotor blade 101. The antenna comprises one or more electrically non-conductive rotor blades 101, each having an electrical conductor 210, 310 positioned parallel to the major axis of a respective rotor blade 101. A connection means 410, 412, 510, 521, 620, 623 is provided to connect the antenna to apparatus for the reception or transmission of radio waves which is located in the fuselage 102. Also disclosed is a communications system including apparatus for the transmission or reception of radio waves.

    28.
    发明专利
    未知

    公开(公告)号:FI933478A

    公开(公告)日:1994-02-06

    申请号:FI933478

    申请日:1993-08-05

    Applicant: IBM

    Abstract: Disclosed is a combined antenna and helicopter rotor blade 101. The antenna comprises one or more electrically non-conductive rotor blades 101, each having an electrical conductor 210, 310 positioned parallel to the major axis of a respective rotor blade 101. A connection means 410, 412, 510, 521, 620, 623 is provided to connect the antenna to apparatus for the reception or transmission of radio waves which is located in the fuselage 102. Also disclosed is a communications system including apparatus for the transmission or reception of radio waves.

    Non-linear inductors
    29.
    发明专利

    公开(公告)号:GB2259190A

    公开(公告)日:1993-03-03

    申请号:GB9118739

    申请日:1991-09-02

    Applicant: IBM

    Abstract: A non-linear inductor for a CRT line timebase circuit comprises a bobbin 40 carrying an inductive coil 41 and a first permanent magnet 42 adjacent the coil 41. A second permanent magnet 200 is positioned and oriented relative to the first magnet 42 in such a manner that the magnetic field generated by the non-linear inductor is substantially reduced. Because the second magnet 200 is integral, the non linear inductor occupies the same printed circuit board area as a conventional non linear inductor. Furthermore, because the second magnet 200 is oriented to substantially cancel the magnetic field, no additional magnets are required for deflecting the magnet field away from the CRT.

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