Metering receptacle
First Claim
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1. A metering receptacle, comprising:
- an elongate hollow body having a first end with a closable exit opening and a second end;
a plunger part of lubricious plastic accommodated in the hollow body in a longitudinally displaceable manner so as to contact the hollow body at all positions of the plunger part in the hollow body;
a plunger rod attached to the plunger part; and
a sealing stopper part of plastic which occupies a fixed position completely within the elongate hollow body and has a centric through-bore for the passage of the plunger rod, wherein the stopper part is a one piece stopper part which sealingly contacts the hollow body and sealingly contacts the plunger rod when the plunger part is against the stopper part;
wherein the displaceable plunger part is movable away from the sealing stopper part when the plunger rod is moved through the through-bore, said plunger part having circumferential sealing lips on a side facing said stopper part.
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Abstract
A metering receptacle has an elongate hollow body which at one end has a closable exit opening, and which at the other end is closable by way of a plastic plunger stopper. The plunger stopper is at the same time longitudinally displaceable in the hollow body by way of a plunger rod. The metering receptacle is configured such that the plunger stopper is formed of two parts, with a sealing stopper part of plastic which is rigidly positionable in the elongate hollow body and has a centric bore for the passage of the plunger rod, and with a longitudinally displaceable plunger part of lubricious plastic which is connected to the plunger rod.
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Citations
18 Claims
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1. A metering receptacle, comprising:
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an elongate hollow body having a first end with a closable exit opening and a second end;
a plunger part of lubricious plastic accommodated in the hollow body in a longitudinally displaceable manner so as to contact the hollow body at all positions of the plunger part in the hollow body;
a plunger rod attached to the plunger part; and
a sealing stopper part of plastic which occupies a fixed position completely within the elongate hollow body and has a centric through-bore for the passage of the plunger rod, wherein the stopper part is a one piece stopper part which sealingly contacts the hollow body and sealingly contacts the plunger rod when the plunger part is against the stopper part;
wherein the displaceable plunger part is movable away from the sealing stopper part when the plunger rod is moved through the through-bore, said plunger part having circumferential sealing lips on a side facing said stopper part. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A metering receptacle comprising:
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an elongate hollow body having a first end with a closable exit opening, an opposed second end, and a passage of uniform cross-section between said ends;
an elastomeric sealing stopper part which occupies a fixed position in the passage toward the second end, said stopper part having a centric through-bore;
a plunger part of lubricious plastic located in said passage and displaceable away from said sealing stopper part, said plunger part and said sealing stopper part completely sealing said second end of said hollow body when said plunger part is located against said sealing stopper part, said plunger part having circumferential sealing lips on a side facing said stopper part, said lips pressing into said elastomeric stopper part to provide a seal when said plunger part is located against said stopper part; and
a plunger rod attached to the plunger part and received through said through-bore of said sealing stopper part. - View Dependent Claims (16, 17, 18)
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Specification