Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1984-11-09
1987-01-06
Moore, Chris K.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
15413, A47L 526
Patent
active
046335439
ABSTRACT:
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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Photographs of a vacuum broom motor housing believed to have been sold more than 1 yr. prior to the filing date of the application.
Bramhall George H.
Smith Robert M.
Sovis John F.
Moore Chris K.
Royal Appliance Mfg. Co.
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