Packing nut and rod guide for piston paint pumps

F - Mech Eng,Light,Heat,Weapons – 04 – B

Patent

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Details

F04B 53/18 (2006.01) F04B 53/02 (2006.01) F04B 53/16 (2006.01) F16J 15/18 (2006.01)

Patent

CA 2170897

A combined packing nut and rod guide (62) for piston paint pumps has a body with a central bore therethrough and at least one relief (68) extending axially along the bore providing a lubricating passageway and paint leakage path. An annular reservoir (74) is formed at an interior end of the nut body for lubricating fluid. The nut body has axial and radial surfaces (84, 80) to axially and radially position the combined packing nut and rod guide in the pump housing to locate and maintain the position of the piston rod with respect to the housing.

Un ensemble écrou de serrage et guide de tige (62) pour pompes à peinture à piston possède un corps pourvu d'un alésage central et au moins un dégagement (68) s'étendant axialement le long de l'alésage et formant un passage pour le fluide de lubrification ainsi qu'un autre passage pour les fuites de peinture. Un réservoir annulaire (74) prévu pour le fluide de lubrification est formé au niveau d'une extrémité interne du corps de l'écrou. Le corps de l'écrou possède des surfaces axiales et radiales (84, 80) permettant de positionner axialement et radialement l'ensemble écrou de serrage et guide de tige dans le corps de la pompe afin de positionner et de maintenir en place la tige du piston par rapport au corps.

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