发明名称 |
DISPENSING CARTRIDGE WITH STEPPED CHAMBER |
摘要 |
A dispensing cartridge for use with a hand-held applicator has a chamber with a first section and a second section. The second section has a smaller cross-sectional area than the first section such that the chamber has a stepped configuration. A piston is slidably received in the chamber and has a head portion that is received in the second section and a tail portion that is received in the first section. As a force is applied to the tail portion, the head portion advances to expel material through an outlet opening. The cartridge is especially useful for dispensing compositions having a relatively high viscosity such as dental pastes and the like. |
申请公布号 |
EP1148834(B1) |
申请公布日期 |
2007.04.04 |
申请号 |
EP19990925675 |
申请日期 |
1999.05.18 |
申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
PETRICH, ROBERT, W.;MARTIN, THOMAS, W. |
分类号 |
A61C5/04;A61C5/06;A61C5/00;B05C17/005;B05C17/01;B65D83/00 |
主分类号 |
A61C5/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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