US 4,407,379 A · High accuracy filling machines

Abstract

A method is provided for weighing and filling a plurality of containers. The method involves providing a plurality of moving weigh members each comprising a moveable member which is moveable in proportion to the weight of material in a container weighed by the weigh member, and a fixed reference member fixed with respect to the weigh member so as to move therewith. The position of the moveable member of each weigh member is automatically and electrooptically measured relative to the fixed reference member thereof. The weight of the material in the container is determined from the relative position of the moveable member with respect to the fixed reference member. Based on this determined weight, filling of the container, or subsequent filling of similar containers, is terminated, added to or subtracted from.

Claims34

Dependent claims

In a method of weighing and filling a plurality of containers, the improvement comprising:

providing a plurality of moving weigh members each comprising a moveable member moveable in proportion to the weight of material in a container weighed by the weigh member and a fixed reference member fixed with respect to the weigh member so as to move therewith,
automatically and electro-optically measuring the position of the moveable member of each weigh member relative to the fixed reference member thereof,
determining from the relative position of said moveable member with respect to said fixed reference member the weight of material in the container and,
from said determined weight, terminating, adding to or subtracting from the filling of said container or subsequent fillings of similar containers.

1 more element

Dependencies are inferred from the claim text.

High accuracy filling machines

Life of this patent

High accuracy filling machines

Life of this patent

Abstract

Claims34