发明名称 |
SELF-EVACUATING VACUUM CLEANER |
摘要 |
A vacuum cleaner has an electric motor driving an air impeller for creating suction and a pump which draws liquid material through an inlet tube from the bottom of a tank and expels it from the tank. The vacuum cleaner also includes a mechanical shut-off and override assembly that automatically shuts off the motor if the liquid level in the tank gets too high. A user, however, can mechanically override this automatic shut-off in order to continue pumping liquid out of the tank. A priming apparatus is disposed in the tank in fluid communication with the pump, and a valve is selectively actuable to establish a pressure differential across liquid in the priming apparatus to thereby prime the pump.
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申请公布号 |
CA2219682(A1) |
申请公布日期 |
1998.01.12 |
申请号 |
CA19972219682 |
申请日期 |
1997.07.11 |
申请人 |
SHOP VAC CORPORATION |
发明人 |
BERFIELD, ROBERT C.;BUSS, RANDY L.;SEASHOLTZ, CRAIG A.;CREVLING, ROBERT L. |
分类号 |
A47L9/00;A47L11/30;(IPC1-7):A47L9/00 |
主分类号 |
A47L9/00 |
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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