Piston for dispensing a flowable component from a cartridge
AssigneeSulzer Mixpac AG
InventorRalf Seifer
Life of this patent
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Abstract
A piston for dispensing a flowable component from a cartridge includes a piston having a base body and a venting element. The base body has a passage connecting a component side and an actuation side and has a passage opening. The venting element has an internal connection element and a pin which is partly arranged in the passage opening of the base body. The internal connection element and the pin are connected by a spring element. The pin of the venting element can adopt a sealing position and an aerating position. To enable a secure sealing, the spring element is configured such that it includes an angle of a maximum of 80° with the axial direction in the sealing position of the pin at a connection line to the internal connection element in the direction of an actuation side.
Claims15
A piston for dispensing a flowable component from a cartridge, the piston comprising
- a base body;
- and
- a venting element,
- the base body having a component side, an actuation side and a passage connecting the component side and the actuation side and having a passage opening;
- the venting element having
- an internal connection element by which the venting element is connected to the base body, a pin arranged at least partly in the passage of the base body, and
- a spring element connecting the internal connection element and the pin, and which is connected to the internal connection element along a connection line,
- the pin of the venting element
- configured to adopt
- a sealing position in which the pin is aligned along an axial direction and the passage opening is closed in an airtight manner, and
- an aerating position in which an exchange of air is capable between the component side and the actuation side via the passage,
- the venting element being arranged and configured such that the spring element is configured to urge the pin into the sealing position, and
- the spring element being configured to include an angle between 65° and 75° with the axial direction in the sealing position of the pin at the connection line to the internal connection element in the direction of the actuation side.
Dependencies are inferred from the claim text.