Railway switches and signals – Cab signal or train control – Train defect
Reexamination Certificate
2005-03-01
2005-03-01
Le, Mark T. (Department: 3617)
Railway switches and signals
Cab signal or train control
Train defect
C701S019000
Reexamination Certificate
active
06860453
ABSTRACT:
A wheel (1) of a railway vehicle is associated with a vibration sensor (3) for supplying a vibration impulsive signal (V), indicative of the vibration of the wheel, to an electronic processing unit (E). This generates, based on the vibration signal (V), an impulsive surveillance signal (S) the instant value of which is increased in a manner correlated to the amplitude of each vibration impulse (I) and decreased in accordance with a predetermined law after each vibration impulse. The processing unit (E) compares the instant value of the surveillance signal (S) with a reference threshold value (T) and automatically generates an alarm signal (A) when the instant value of the surveillance signal (S) reaches or exceeds the reference threshold value (T).
REFERENCES:
patent: 4180811 (1979-12-01), Yoshimura et al.
patent: 4344138 (1982-08-01), Frasier
patent: 6411870 (2002-06-01), Sato
patent: WO 0009379 (2000-02-01), None
Moretti Roberto
Sema Silvano
Le Mark T.
Merchant & Gould P.C.
SKF Industrie S.p.A.
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