Brakes – With condition indicator – Electrical
Patent
1995-09-28
1997-06-24
Butler, Douglas C.
Brakes
With condition indicator
Electrical
374159, G01K 542
Patent
active
056410425
ABSTRACT:
An anomalous braking element temperature-rise detector assembly detecting anomalous temperature rise of a braking element so as to prevent braking force from being lowered owing to occurrence of fade and also prevent the braking element from being inactive owing to occurrence of vapor-lock, which contributes to reliability and safety of a brake. The anomalous braking element temperature-rise detector includes a rotatable member and a temperature-rise member which is a part of a group of braking elements which act on the rotatable member so as to provide braking force thereagainst, the temperature-rise member rising in temperature when brake force is provided against the rotatable member. The anomalous braking element temperature-rise detector assembly further includes a hydrogen absorbing material for absorbing hydrogen at ordinary temperature and discharging hydrogen when the temperature-rise member rises to anomalous temperature. The anomalous braking element temperature-rise detector assembly also includes a stretchable body for accommodating therein the hydrogen absorbing material, the stretchable body being fixed to the temperature-rise member such that heat transfer occurs between the temperature-rise member and the hydrogen absorbing material, wherein a part of the stretchable body slidably contacts the rotatable member which rotates relative to the stretchable body in a state where the stretchable body is extended by hydrogen discharged from the hydrogen absorbing material.
REFERENCES:
patent: 3662863 (1972-05-01), Dornback
patent: 3855865 (1974-12-01), Kishimoto et al.
patent: 3975706 (1976-08-01), Kato
patent: 3992944 (1976-11-01), Woodle
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