Device for controlling the piston roll-back

A device for controlling roll-back of a piston in a brake caliper includes a bush coaxial with and external to the piston. The bush has an outer sealing surface, and a scraper element seated in the caliper body acts against the sealing surface of the bush. An elastic element between the bush and the...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	PICCOLI MAURO, GELFI LUCA
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING BRAKES CLUTCHES COUPLINGS FOR TRANSMITTING ROTATION ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A device for controlling roll-back of a piston in a brake caliper includes a bush coaxial with and external to the piston. The bush has an outer sealing surface, and a scraper element seated in the caliper body acts against the sealing surface of the bush. An elastic element between the bush and the piston has a elastic constant selected so as to provide an elastic force on the piston substantially weaker that the axial friction force exerted by the scraper element. When the piston is pushed out of its piston seat, the piston packs the elastic means or abuts against the bush before relative sliding occurs between the scraper element and the outer sealing surface of the bush.