发明授权
- 专利标题： Trigger sprayer having central vent cylinder
- 专利标题（中）： 触发喷雾器具有中央排气筒
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申请号： US727794申请日： 1996-10-07
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公开(公告)号： US5715974A公开(公告)日： 1998-02-10
- 发明人: Donald D. Foster , Philip L. Nelson
- 申请人： Donald D. Foster , Philip L. Nelson
- 申请人地址： MO St. Louis
- 专利权人： Contico International, Inc.
- 当前专利权人： Contico International, Inc.
- 当前专利权人地址： MO St. Louis
- 主分类号： B05B11/00
- IPC分类号： B05B11/00 ; B67D5/42
摘要：
A liquid dispenser comprising a dispenser body having a pump mechanism defining a variable volume fluid receiving cavity. A cylindric formation, smaller than the fluid receiving cavity, is within the cavity and a vent passageway is in fluid communication with the cylindric formation. A plunger is reciprocally moveable within the cylindric formation and is configured for moving with the pump mechanism as the pump mechanism is moved between extended and contracted positions. The plunger and cylindric formation are configured such that the vent passageway is in fluid communication with the fluid receiving cavity of the pump mechanism when the pump mechanism is in its contracted position and is configured to block fluid communication between the vent passageway and the fluid receiving cavity when the pump mechanism is in its extended position.
公开/授权文献
- US4655837A Building material and manufacture thereof 公开/授权日：1987-04-07
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