F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
103/154
F04B 17/00 (2006.01) F04B 15/02 (2006.01) F04B 37/10 (2006.01) F04B 53/12 (2006.01)
Patent
CA 2010403
A chop-check pump for viscous material having cylinder means defining an axis, a drive rod axially movable within the cylinder means, a primer valve attached at one end of the drive rod and movable with the drive rod, and a floating check valve mechanism associated with the cylinder means at an outlet from the cylinder means through which the drive rod extends into the cylinder means. The primer valve includes a distal valve plate secured to the drive rod and a slidable valve plate on the drive rod slidable between a position against the distal valve plate and a position spaced from the distal valve plate. There are flow passages in both valve plates. Preferably, the flow passages in the slidable valve plate and the distal valve plate have a cross sectional area slightly less than the cross sectional area of the respective plates. In one embodiment, the slidable valve plate has a radial extent greater than that of the distal valve plate. The bottom of the distal valve plate is configured with a sharp leading edge for facilitating movement of the primer valve into the viscous material to be pumped.
Ingersoll-Rand Company
Smart & Biggar
LandOfFree
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