Dispensing – Collapsible wall-type container – With wall-collapsing means
Patent
1987-12-31
1992-03-17
Olszewski, Robert P.
Dispensing
Collapsible wall-type container
With wall-collapsing means
7386462, B65D 3528
Patent
active
050960938
ABSTRACT:
The invention is a hand held hydraulic dispenser and a manual method for hydraulically dispensing sample liquids. The hydraulic dispenser acts as a hydraulic press to dispense sample liquids from a magazine which holds the sample liquid. The hydraulic dispenser includes a hydraulic pump and a magazine coupler which are hydraulically connected by a hydraulic hose. A handle portion is incorporated into the magazine coupler to enable the user to support and manipulate the magazine coupler while pipetting liquids. The user first attaches the magazine to the magazine coupler. The user then activates the hydraulic pump in order to generate quantitative positive displacements of hydraulic liquid. These positive displacements of hydraulic liquid are transmitted to the magazine coupler, which, in turn, responds by expanding and collapsing the magazine attached thereto. As a result, sample liquid is aspirated and expressed from the device. The expression of sample fluid from the device is quantitative. The invention combines the principle of the hydraulic press with the concept of an insertable magazine. The dispensing portion of the device may be hand held and manipulated by the user for accessing variously located sample liquids.
REFERENCES:
patent: 3032037 (1962-05-01), Huber
patent: 3153414 (1964-10-01), Beall et al.
patent: 3199511 (1965-08-01), Kulick
patent: 3391829 (1968-07-01), Gregory
patent: 4008831 (1977-02-01), Vidilles
patent: 4147278 (1979-04-01), Uhlig
Lewis Donald G.
Noland Kenneth
Olszewski Robert P.
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