发明名称 |
PUMP CLOSURE FOR CARBONATED BEVERAGE CONTAINER |
摘要 |
PUMP CLOSURE FOR CARBONATED BEVERAGE CONTAINER A hand-operated pump is combined with a closure cap for sealing and pressurizing the open space within a carbonated beverage container. A pump cylinder is integrally formed with a closure screw cap and is insertable through the neck of the beverage container. A piston is coupled by a retainer ring for extension and retraction through the pump cylinder. The piston carries a floating seal which is axially movable along a reduced diameter portion of the piston for opening and closing an air inlet port between an air supply annulus and a compression chamber. The pump includes an improved check valve assembly in which a compressed air discharge port is sealed by a resilient membrane which engages a tapered sealing surface which is coincident with the compressed air discharge port. * * * * * * * * * * * * |
申请公布号 |
CA1314525(C) |
申请公布日期 |
1993.03.16 |
申请号 |
CA19870551492 |
申请日期 |
1987.11.10 |
申请人 |
ROBINSON, TOMMY R. |
发明人 |
ROBINSON, TOMMY R.;BEYER, MICHAEL B. |
分类号 |
B65B31/04 |
主分类号 |
B65B31/04 |
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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