Cartridge with connection for a pump-drive and fluid handling system
First Claim
1. A cartridge for a fluid comprising:
- a cylindrical tank having an opening adapted to admit and discharge fluid relative to the tank, said tank having a first longitudinal section and a second longitudinal section adjoining said first longitudinal section;
a piston movable in a longitudinal direction toward and away from said opening to pump a fluid through the opening into or out of the tank;
a connection element adapted to engage an actuator for moving said piston in said longitudinal direction, said connection element being adapted to mechanically interact with said actuation element to produce a positive fit therewith, said connection element being movable back and forth between said first and second longitudinal sections of said tank; and
said connection element being forced to interact with said actuator to produce said positive fit when said connection element is in said second longitudinal section and automatically releasing said positive fit when said connection element is in said first longitudinal section.
3 Assignments
0 Petitions
Accused Products
Abstract
In a cartridge for a fluid, as well as a system for handling a fluid using such a cartridge, the cartridge has a tank shaped as a cylinder with an opening to admit and discharge the fluid, as well as a piston that can be moved forward and/or back in the tank in order to pump the fluid in or out through the opening. The piston has a connection element that can be connected with an actuator in order to move the piston forward and/or back. The connection element and the actuator are adapted to one another such that the connection is automatically closed in a first longitudinal section of the tank, given movement of the piston in the longitudinal direction and is automatically released again given movement in the opposite direction, and the connection remains closed in a second longitudinal section of the tank given movement of the piston into this second longitudinal section.
14 Citations
10 Claims
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1. A cartridge for a fluid comprising:
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a cylindrical tank having an opening adapted to admit and discharge fluid relative to the tank, said tank having a first longitudinal section and a second longitudinal section adjoining said first longitudinal section;
a piston movable in a longitudinal direction toward and away from said opening to pump a fluid through the opening into or out of the tank;
a connection element adapted to engage an actuator for moving said piston in said longitudinal direction, said connection element being adapted to mechanically interact with said actuation element to produce a positive fit therewith, said connection element being movable back and forth between said first and second longitudinal sections of said tank; and
said connection element being forced to interact with said actuator to produce said positive fit when said connection element is in said second longitudinal section and automatically releasing said positive fit when said connection element is in said first longitudinal section. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for handling a fluid, comprising:
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a cartridge having a cylindrical tank having an opening to admit and discharge a fluid, said tank having a first longitudinal section and a second longitudinal section adjacent to said first longitudinal section;
a piston movable in a longitudinal direction in said tank toward and away from said opening to pump the fluid into and out of the opening;
a pump device having an actuator engageable with the piston to move the piston in said longitudinal direction; and
said piston having a connection element that interacts with said actuator so as to be movable thereby between said first longitudinal section and said second longitudinal section, said connection element producing a mechanically positive fit with said actuator when said connection element is in said first longitudinal section of said tank, and automatically releasing said actuator from said connection element when said connection element is in said second longitudinal section of said tank. - View Dependent Claims (9, 10)
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Specification