US 4,293,010 AGranted

Adjustable volumetric filler head

AssigneeA-T-O Inc.

InventorMichael E. Winiasz

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Abstract

A filler head for delivering a preselected volume of product to a container, the head having a charging cylinder and a piston movable in the cylinder to define a product chamber therein. Product is delivered under pressure through a passage to the chamber, the piston being movable under product pressure in a direction enlarging the chamber. Adjustable stop means limit chamber enlarging movement of the piston to determine the preselected volume. A plug entering the passage as the piston approaches the end of its discharge stroke restricts the discharge of product to reduce turbulence. A piston valve is movable between the product passage and an outlet passage, in one position interrupting the delivery of product to the chamber for discharge of product from the chamber through the valve to the outlet, and in another position closing the outlet and permitting delivery of product under pressure to the chamber. The piston valve is removable as a unit from the head, for ease of cleaning.

Claims15

Dependent claims

A filler head for delivering a preselected volume of product to a container comprising a charging cylinder, piston means movable in said cylinder to define therewith a product chamber, means for delivering product under pressure to said chamber, said piston means being movable under product pressure in a direction enlarging said chamber, means limiting movement of said piston means in said chamber-enlarging direction thereby determining said preselected volume, a tubular body, means defining a first product passage between said body and said chamber, a first valve seat around said first passage, a piston valve movable in said tubular body, said valve having a first valve seal at one end engageable against said first valve seat in a first position of said valve, means defining a second product passage from said body, a second valve seat around said second passage, a second valve seal at the opposite end of said piston valve engageable against said second valve seat in a second position of said valve, means defining a third product passage through said valve, said third passage having a product inlet opening through said first valve seal and a product outlet opening adjacent said opposite end of said valve, means for moving said valve between said first and second positions, said product delivering means communicating with said body between said valve and said first passage for delivery of product to said chamber in said second position of said valve, said valve interrupting the delivery of product to said chamber when in said first position, and means for moving said piston means in a direction discharging product through said first and third passages and through said second passage when said valve is in said first position.

A filler head for delivering a preselected volume of product to a container comprising a charging cylinder, piston means movable in said cylinder to define therewith a product chamber, means for delivering product under pressure to said chamber, said piston means being movable under product pressure in a direction enlarging said chamber, means limiting movement of said piston means in said chamber-enlarging direction thereby determining said preselected volume, an outlet from said filler head, means for moving said piston means in a direction discharging product from said chamber through said outlet, valve means closing said outlet during delivery of product to said chamber and interrupting such product delivery during discharge of product from said chamber, said means limiting movement of said piston means including a first tubular member communicating with said cylinder, a second tubular member mounted in telescoping relation to said first member, stop means carried by said second member, piston rod means carried by said piston means for movement therewith through said members into engagement against stop means, means for adjusting the position of said stop means lengthwise of second member, and means for adjusting the telescoped position of said second member relative to said first member.

Dependencies are inferred from the claim text.