Dispenser for positively discharging a medium through a plurality of motions
AssigneeIng. Erich Pfeiffer GmbH
InventorsLothar Graf, Karl-Heinz Fuchs
Life of this patent
Estimating the term…
Abstract
A dispenser is disclosed which is made up of two telescoping sections. One section holds at least one volume of a substance to be discharged. Telescoping motion of the sections compresses the substance to be discharged to force it through a passage in the section not holding the substance volume to be discharged therefrom. Motion between the section is limited to ensure precise metering of a charge to be dispersed.
Claims41
A dispenser for positively discharging a medium through an outlet (14), said dispenser (1) comprising:
- a discharge unit (6,6a) for expelling the medium in the form of a first charge volume unit as a function of a discharge actuation that induces a discharge operation during at least one discharge cycle, said discharge unit (6, 6a) including a discharge piston (9, 9a) traversed by an outlet duct (15, 15a), said outlet duct (15, 15a) connecting to said outlet (14, 14a);
- a first dispenser section (2,2a) and a second dispenser section (3,3a) reciprocally displaceable in a first operating motion defining a first motion direction, at least one of said first and second dispenser sections (2,3) being displaceable in a second operating motion significantly diverging from said first operating motion;
- medium reservoir means in said first dispenser section for containing a plurality of charge volume units including a first charge volume unit and a second charge volume unit;
- and
- means for discharging said first charge volume unit through said first operating motion and for successively discharging a second charge volume unit after reciprocally displacing said first and second dispenser sections (2, 3) in said second operating motion, wherein prior to discharge, at least one of the first and second charge volume units is substantially sealingly enclosed.
A dispenser for discharging a medium through a medium outlet (14, 14a), said dispenser (1, 1a) comprising:
- a first dispenser section (2, 2a), and a second dispenser section (3, 3a) displaceable relative to said first dispenser section (2, 2a) for expelling the medium from the medium outlet;
- said first dispenser section (2, 2a) further comprising means (23, 23a) for holding a medium reservoir (12, 12a), said medium reservoir (12, 12a) also providing a component separate from said first and second dispenser sections (2, 2a and 3, 3a);
- means for discharging said medium through a flow path passing through said second dispenser section (3, 3a);
- and
- said means for holding (23, 23a) having walls provided for receiving said medium reservoir, wherein said walls are in an axially substantially stable position with respect to said first dispenser section (2, 2a).
A dispenser for discharge of a medium through a medium outlet (16), said dispenser comprising:
- a medium reservoir (12) providing at least one opening zone for opening said medium reservoir (12);
- and
- a closure (9, 17) for closing said medium reservoir (12) in the vicinity of said opening zone, said closure (9, 17) being operationally displaceable with respect to said medium reservoir (12) for positively expelling said medium, said medium reservoir (12) and said closure (9, 12) providing a preassembled assembly unit (5) prefilled with the medium, said closure (9, 17) providing a coupling member (16) for:
- positively coupling said closure (9, 17) with at least one operating handle (41, 42) of a separate assembly unit (2, 3) by a coupling motion beginning from an initial position, said coupling motion opening, displacing, and feedingly connecting
- said closure (9, 17) with at least one operating handle (41 to 44) of a separate assembly unit (2, 3), and with said coupling motion being a substantially linear compression motion.
Dependencies are inferred from the claim text.