Sealed brake actuator

B - Operations – Transporting – 60 – T

Patent

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Details

B60T 17/08 (2006.01)

Patent

CA 2373384

A sealed air-operated brake actuator (10) comprising a brake actuator divided into a spring chamber (58) and a pressure chamber (56). An extra-large force compression spring (62) is contained in the spring chamber. The spring chamber is fluidly exhausted through a one-way valve (86) located in the end of an actuator rod extending out of the brake actuator. The large force compression spring overcomes any vacuum or pressure that might form within the spring chamber upon the release of the parking brake and the one-way valve releives any pressure buildup in the spring chamber upon the release of the parking brake.

Cette invention se rapporte à un actuateur de frein scellé commandé par air (10), qui comprend un actuateur de frein divisé en une chambre à ressort (58) et en une chambre de pression (56). Un ressort de compression de très grande force (62) est contenu dans la chambre de compression. La chambre de compression est vidée de son fluide par une soupape unidirectionnelle (86) placée à l'extrémité d'une tige d'actuateur s'étendant depuis l'actuateur de frein. Le ressort de compression de très grande force élimine le vide ou la pression qui pourrait se former dans la chambre à ressort lors du desserrage du frein de parcage et la soupape unidirectionnelle libère toute accumulation de pression dans la chambre à ressort lors du desserrage du frein de parcage.

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