Dispensing – With plural openings or discharge guides – Having flow controllers or closures
Patent
1997-10-09
1999-11-30
Bomberg, Kenneth
Dispensing
With plural openings or discharge guides
Having flow controllers or closures
141243, 141237, B67D 300
Patent
active
059927097
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
There is a great need for a device which rapidly and efficiently dispenses viscous liquids into containers for a great variety of applications. This need is especially great in Drosophila sp. laboratories where large volumes of hot media are dispensed into vials on a daily basis. There is also a need for such a device in microbiological laboratories which require large volumes of hot media for culture vials and plates. Of course, such a need also exists in other areas such as the cosmetic industry and food industry. Prior art devices for dispensing viscous liquids are relatively expensive, have many moving parts and may require energy sources to operate. Prior art media dispensing devices include peristaltic and piston driven pumps.
The present invention, however, rapidly and efficiently dispenses viscous liquids into selected containers in only a fraction of the time and cost required by piston or peristaltic pump devices.
SUMMARY OF THE INVENTION
The invention is a device comprised of a dispensing container having either a fixed or removable dispenser bottom with multiple drainage holes adapted to correspond to selected pre-packaged containers or sorted containers to be filled. A damming plate having drainage holes therein and slidable on a grooved track above said dispenser bottom is also included. While in the closed position, neither set of drainage holes (in the damming plate or the dispenser bottom) align which retains the viscous liquid in the container. In the open position, the drainage holes in the damming plate and dispenser bottom are aligned to allow the gravity transfer of the liquid into the selected containers placed below the device.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1a is a side view of a viscous liquid dispenser illustrating the damming plate in a closed position.
FIG. 1b is an enlarged view of the viscous liquid dispenser of FIG. 1a which shows the damming plate in a closed position with respect to the bottom of the dispenser.
FIG. 2 is a top view of the viscous liquid dispenser provided in FIG. 1.
FIG. 3 is a top view of the viscous liquid dispenser illustrating the damming plate in an open position.
FIG. 4 is a side view of a preferred embodiment of a dispensing container having a dispenser bottom which is removable and can be interchanged with other dispenser bottoms having different configurations, numbers or sizes of drainage holes. In this Figure, the dispenser bottom has been removed.
FIG. 5a is a side view of a preferred embodiment of a viscous liquid dispenser having a first configuration of an interchangeable, removable dispenser bottom and an interchangeable, slidable damming plate.
FIG. 5b shows replacement of the first configuration of the interchangeable, removable dispenser bottom and interchangeable slidable damming plate depicted in FIG. 5a with a dispenser bottom and damming plate having a second configuration.
DETAILED DESCRIPTION OF THE INVENTION
Referring now in specific detail to the drawings, in which like reference numbers identify similar or identical elements, FIGS. 1-5 illustrate embodiments of a media dispenser shown generally at 1. In simplest terms, the viscous liquid dispenser 1 can be broken down into a dispensing container 6 having a dispenser bottom 2 with a multiplicity of drainage holes 3, a damming plate 4 with a multiplicity of drainage holes 3 and a grooved track 5. The embodiment depicted by FIGS. 1-3 is adapted for and particularly useful in dispensing media into 23 different containers, the openings of which are depicted in FIG. 3 as dotted lines. However, as will be clear to one of skill in the art, the shape of the dispensing container and the number of drainage holes 3 can be easily altered in both the dispenser bottom 2 and the damming plate 4 so that the configuration and number of containers which can be filled at the same time can be altered. In this viscous liquid dispenser, the damming plate 4 is slidably mounted in a grooved track 5 along the inside wall of the dispensing container 6 just abo
REFERENCES:
patent: 538941 (1895-05-01), Wolven
patent: 581847 (1897-05-01), Carvin
patent: 1139269 (1915-05-01), Goodman et al.
patent: 1294579 (1919-02-01), Waring
patent: 1303218 (1919-05-01), Esselmann
patent: 1882668 (1932-10-01), McCabe
patent: 2749005 (1956-06-01), Plusquellic
patent: 3314575 (1967-04-01), Graham
patent: 3633489 (1972-01-01), Spoelhof
Gray Gordon W.
Peoples Donald H.
Bomberg Kenneth
Princeton University
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