ROTARY SEAL

There is provided a rotary seal (10) for sealing around shafts in flight controls of an aircraft. The rotary shaft seal comprises: an annular first sealing surface for sealing against a housing (40); an annular second sealing surface (22) for sealing against a rotatable surface; a reservoir (24) arr...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KRACKE, Jeremy, TIMMS, Mark
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
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Beschreibung
Zusammenfassung:There is provided a rotary seal (10) for sealing around shafts in flight controls of an aircraft. The rotary shaft seal comprises: an annular first sealing surface for sealing against a housing (40); an annular second sealing surface (22) for sealing against a rotatable surface; a reservoir (24) arranged for receiving a fluid that is leaked past the second sealing surface; and a sorbent material (25) within the reservoir for absorbing and/or adsorbing the fluid received within the reservoir. Also provided is a method of sealing around a rotary cylindrical surface within a housing (40) using a rotary seal (10) provided on the cylindrical surface, wherein the rotary seal comprises an annular first sealing surface for sealing against the housing (40) and an annular second sealing surface (22) for sealing against a rotating surface. The method comprises: allowing fluid to leak past the second sealing surface for lubrication of the second sealing surface; collecting the fluid in a reservoir (24) within the rotary seal; and absorbing and/or adsorbing the fluid within the reservoir to hold the fluid within the rotary seal and prevent leakage of the fluid out of the reservoir.