发明名称 |
Hand vacuum cleaner |
摘要 |
A hand vacuum cleaner is provided comprising a lightweight motor housing containing a revolving brush. A bag assembly is selectively separable from the housing and is sealable to the housing with an elastomeric retaining ring including a sealing and retaining bead for reception in a recessed slot area of a housing bag attachment collar. A fan is mounted to the motor on a motor shaft locking surface including a wall portion tapering towards the fan. The shaft is in locking cooperation with a mating fan bore locking surface including a wall portion tapered for close reception of the motor shaft locking surface. A shaft extension is threadedly received on the motor shaft and is urged into engagement against the fan by resistance of a revolving brush operated by a belt received on the shaft extension which continually tightens the shaft extension to the motor shaft and fixes the fan to the motor shaft. A stone shield is circumferentially spaced about the fan whereby the stone shield block items impinging against the housing from the fan from damaging the housing.
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申请公布号 |
US4633543(A) |
申请公布日期 |
1987.01.06 |
申请号 |
US19840670553 |
申请日期 |
1984.11.09 |
申请人 |
ROYAL APPLIANCE MFG. CO. |
发明人 |
SOVIS, JOHN F.;SMITH, ROBERT M.;BRAMHALL, GEORGE H. |
分类号 |
A47L5/24;A47L5/26;A47L5/28;A47L9/22;(IPC1-7):A47L5/26 |
主分类号 |
A47L5/24 |
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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