Automatic transmission fluid flushing device

F - Mech Eng,Light,Heat,Weapons – 01 – M

Patent

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Details

F01M 11/04 (2006.01) B60S 5/00 (2006.01) F16H 57/04 (2010.01) F16N 31/00 (2006.01) F16N 33/00 (2006.01)

Patent

CA 2238199

An automatic transmission fluid flushing device for closed loop exchange of new transmission fluid for used transmission fluid within an automatic transmission. A plurality of transparent or translucent elongate fluid containment vessels contain free floating pistons, one piston per vessel, mountable into generally fluid impervious slidable registration within the vessels so as to form a sliding generally fluid impervious seal between the pistons and the interior walls. The pistons when mounted in the vessels are translatable between the ends of the vessels when urged by a differential biasing fluid pressure of pressurized fluid contained in variable volume fluid reservoirs between the ends of the vessels and the pistons.

Appareil de vidange automatique de liquide de transmission pour le remplacement en boucle fermée, dans une transmission automatique, du liquide de transmission usé par un liquide de transmission propre. Une série de récipients à fluide allongés, transparents ou translucides contiennent chacun un piston flottant et coulissant, monté de manière à créer une barrière mobile étanche au fluide à l'intérieur des récipients et formant, entre les pistons et les parois internes des récipients, un joint coulissant généralement étanche. Une fois installés dans les récipients, les pistons peuvent se déplacer entre les extrémités des récipients sous l'action de la pression différentielle d'un fluide sous pression contenu dans des réservoirs à volume variable situés entre les extrémités des contenants et des pistons.

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