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US 6,309,059 B1Granted
Cartridge stopper with a valve function
OwnerFrank Ritterinventor
Life of this patent
Estimating the term…
Abstract
A cartridge stopper having a valve function, especially for printing ink cartridges made of plastic, includes a valve sleeve that is axially elastic and rests on a mouthpiece neck. The valve sleeve includes a sealing lip that cooperates with a central body, and can move elastically forward (open) when pressure is exerted on the cartridge contents in order to clear a slit opening between the mouthpiece neck and the central body.
Claims21
A cartridge stopper having a valve function, comprising:
- (a) an outwardly convex central body connected to a mouthpiece neck of a cartridge end wall by ribs;
- (b) the mouthpiece neck having a cylindrical end section that extends axially beyond a connecting area with the ribs, the cylindrical end section terminating approximately at a circumference of the central body and delimiting a slit opening with the circumference of the central body;
- (c) a valve sleeve mounted on the mouthpiece neck and having an axially inner part connected with the mouthpiece neck, and an axially outer part connected with the axially inner part by wall ribs, the axially outer part having a sealing lip cooperating with the central body, the axially outer part being axially movable relative to the axially inner part;
- and
- (d) the wall ribs produce a connection that is elastic in the axial direction and extending between the axially inner part and the axially outer part of the valve sleeve without extending in a radial direction that is perpendicular to the axial direction.
2 more elements
An ink cartridge stopper comprising:
- (a) a mouthpiece neck having an axially outer end section;
- (b) a central body located radially inward of the mouthpiece neck and having an outer circumference, the outer circumference spaced from the axially outer end section of the mouthpiece neck to form an outlet of the ink cartridge stopper between the outer circumference and the axially outer end section;
- (c) a valve sleeve mounted on the mouthpiece neck, the valve sleeve having an axially inner part and an axially outer part movably connected to the axially inner part by an elastic coupling that extends between the axially inner and outer parts, the axially outer part having a sealing lip that is engageable with the central body to close the outlet of the ink cartridge stopper when the axially outer part is in a closed position;
- and
- (d) the elastic coupling biasing the axially outer part toward the axially inner part and into the closed position, wherein the axially outer part is movable in an axial direction relative to the axial inner part, and the elastic coupling extends substantially parallel to the axial direction.
2 more elements
Dependencies are inferred from the claim text.