Antidrip volumetric rapid filling machine usable with very viscous substances
OwnerHerman Laub, IIIinventor
Life of this patent
Estimating the term…
Abstract
This device for rapid and extremely accurate filling of containers includes a duct for bleeding off gas bubbles from a metering device, where prior bubble-eliminating provisions are inadequate due to extreme product viscosity. The device also has relative adjustment between a positive mechanical stop, used to define very precisely the substance volume metered by a biacting piston, and a control switch used to reverse the piston. This adjustability corrects an inaccuracy arising in prior devices due to the necessarily slower speed of the piston with extremely viscous product.
Claims12
A system for filling a container with flowable substance from a source thereof, comprising:
- means defining a flow path for passage of such substance from such a source toward such a container;
- a dispensing nozzle, connected to receive such substance from such source along the flow path, for discharging such substance into such container;
- a volumetric cylinder connected along the flow path upstream of the nozzle, and a biacting piston within the cylinder, adapted to premeasure the volume of such substance discharged along the flow path from such source into such container;
- control means, connected to control the direction of action of the piston;
- a mounting member fixed with respect to the cylinder;
- control-signal means, carried on the mounting member for adjustment with respect to the piston, and adapted and operatively connected to respond to the piston by providing a signal to the control means to reverse the piston;
- a positive mechanical stop, also carried on the mounting member for adjustment in common with the control-signal means, for halting the piston;
- and
- means, also carried on the mounting member with the positive mechanical stop and control-signal means, for effecting a relative adjustment of the positive mechanical stop and the control-signal means.
A system for filling containers with flowable substance from a source thereof, comprising:
- structure defining a volumetric metering chamber having an inner cylindrical surface whose lognitudinal axis is generally vertical, said surface terminating in a lower end wall;
- a port defined by the chamber structure at the same end of the chamber as the said wall, and connected alternately to receive such substance from such a source and to discharge such substance to such containers;
- a biacting metering piston positioned within the chamber, and adapted for motion therein toward and away from said lower end wall, to meter predetermined volumes of such substance into and out of the chamber via the port from such source and to such containers;
- and having a lower end surface facing said one end wall;
- the lower end surface of the piston being concave, to trap at the top of the concave surface any gas bubbles which are between that surface and the end wall;
- and
- structure defining a sealable gas-bleed duct which extends from outside the chamber to a point which, when the piston is at the low extreme of its motion, is adjacent the top of the concave surface of the piston.
Dependencies are inferred from the claim text.