Cartridge plunger with gas evacuation
AssigneeSulzer Chemitech AG
InventorNikolaus Brugner
Life of this patent
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Abstract
A cartridge plunger with at least one gas evacuation opening and at least one gas evacuation element covering the cartridge plunger opening. For a simple and dependable gas evacuation and to prevent any undesirable leakage of the filler material, the gas evacuation element is at least one cover disk that forms a labyrinth path running transverse to the plunger axis. The path is located between the contact surface of the cover disk facing the gas evacuation opening and a corresponding contact surface on the cartridge plunger.
Claims9
In a cartridge plunger with at least one gas evacuation opening and at least one gas evacuation element covering the cartridge plunger opening the improvement comprising the gas evacuation element being comprised of at least one cover disk which forms a labyrinth path running transverse to the plunger axis and located between a contact surface of the cover disk facing the gas evacuation opening and a corresponding contact surface on the cartridge plunger.
Dependencies are inferred from the claim text.