F - Mech Eng,Light,Heat,Weapons – 15 – B
Patent
F - Mech Eng,Light,Heat,Weapons
15
B
F15B 15/14 (2006.01) F16J 15/32 (2006.01)
Patent
CA 2076912
A linear hydraulic cylinder (11) is provided of the type having a cylinder barrel (13;113) and a piston (21;121) reciprocally disposed in the barrel. There is a main piston seal member (55) which seals between the piston and an interior surface (37) of the cylinder barrel. Disposed adjacent the piston seal is a wear ring (61;161) defining a substantially cylindrical outer surface (67) bounded by a pair of substantially square corners (66). A loader member (69) biases the wear ring into sufficiently tight engagement with the interior surface of the barrel to prevent passage of contaminant particles between the surface and the wear ring. The result is substantially reduced cylinder "drift" in the presence of contaminant particles.
Vérin hydraulique linéaire (11) du type ayant un corps de vérin (13; 113) et un piston (21; 121) placé réciproquement dans le corps. Un élément d'étanchéité principal du piston (55) assure l'étanchéité entre le piston et une surface intérieure (37) du corps du vérin. Une bague d'usure (61; 161), placée en contigu avec le joint de piston, définit une surface extérieure essentiellement cylindrique (67) délimitée par une paire d'angles (66) à arête vive. Un élément chargeur (69) compresse la bague d'usure dans un engagement suffisamment étroit avec la surface intérieure du corps de façon à empêcher le passage de particules de contamination entre la surface et la bague d'usure. Ainsi, l'affaissement de fuite des vérins est essentiellement réduit en présence de particules de contamination.
Carlin Jerry F.
Koon James E.
Parker Paul David
Thompson Warren Lynn
Borden Ladner Gervais Llp
Corporation Eaton
Deere & Company
Hyco Holdings Llc (hyco Llc)
LandOfFree
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