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340 records (took 0.024 seconds)

    161.
    发明专利
    未知

    公开(公告)号：SE8802321D0

    公开(公告)日：1988-06-21

    申请号：SE8802321

    申请日：1988-06-21

    Applicant: SERVO CORP OF AMERICA

    Inventor： BAMBARA J E ,  FRAREY J L ,  SMITH R L

    IPC: B61K9/04 ,  G01N29/14 ,  G01M13/04

    Abstract: This invention relates to apparatus for the detection of accustic impact frequencies, characteristic of bearing assembly failure during operation, which modulate an acoustic carrier frequency band. This apparatus allows for on-site or field application with high-level of ambient noise such as are present in railroad yards. This apparatus allows for early detection of such failures, so that a repair may be made before damaging heat build-up or catastrophic bearing failure occurs. Additionally, with sufficient early warning in railroad applications, a train may continue running to a railyard for convenient shop repair rather than expensive field repair.

    A TEMPERATURE SENSING DEVICE
    163.
    发明专利
    A TEMPERATURE SENSING DEVICE 未知

    公开(公告)号：IN158398B

    公开(公告)日：1986-11-08

    申请号：IN677CA1983

    申请日：1983-05-30

    Applicant: SERVO CORP OF AMERICA

    Inventor： VILLAR LUIS FERNANDO

    IPC: G01K1/16 ,  G01K7/02 ,  G01K7/04 ,  G01K7/00

    Abstract: An improved heat sensing tip for a temperature sensing device is provided. The tip comprises an elongated shell of heat conductive material. A temperature probe is positioned for movement within the shell toward and away from an opening in the shell. A cap of heat conductive material is positioned at the front of the probe. A spring urges the cap in contact with the shell for heat conductivity between the two when the device is not in operation. When the device is in operation, the spring bias is overcome thereby providing an insulating air gap between the shell and the tip.

    HEAT SENSING DEVICE
    165.
    发明专利
    HEAT SENSING DEVICE 未知

    公开(公告)号：CA1190766A

    公开(公告)日：1985-07-23

    申请号：CA429301

    申请日：1983-05-31

    Applicant: SERVO CORP OF AMERICA

    Inventor： VILLAR LUIS F

    IPC: G01K7/02 ,  G01K1/16 ,  G01K7/04

    Abstract: IMPROVED HEAT SENSING DEVICE An improved heat sensing tip for a temperature sensing device is provided. The tip comprises an elongated shell of heat conductive material. A temperature probe is positioned for movement within the shell toward and away from an opening in the shell. A cap of heat conductive material is positioned at the front of the probe. A spring urges the cap in contact with the shell for heat conductivity between the two when the device is not in operation. When the device is in operation, the spring bias is overcome thereby providing an insulating air gap between the shell and the tip.

    RAIL ROAD CAR WHEEL DETECTOR
    168.
    发明专利
    RAIL ROAD CAR WHEEL DETECTOR 未知

    公开(公告)号：AU537054B2

    公开(公告)日：1984-05-31

    申请号：AU7520481

    申请日：1981-09-14

    Applicant: SERVO CORP OF AMERICA

    Inventor： SANVILLE W WOODWARD

    IPC: B61K11/00 ,  B61L1/08 ,  B61K9/00 ,  G01R29/02

    Abstract: A method is provided for determining whether an output signal from a magnetic railway wheel detector is produced by the actual passage of a wheel over the transducer. The output signal is compared with an amplitude threshold value and the time period between the zero crossing point and the time at which the signal attains amplitude threshold is compared with a time threshold level. The thresholds are set as a function of the speed of the train. Unless the thresholds are exceeded the output signal is disregarded.

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