公开(公告)号：WO1986002817A1

公开(公告)日：1986-05-22

申请号：PCT/US1985002231

申请日：1985-11-08

Applicant: ROYAL APPLIANCE MANUFACTURING CO.

Inventor： ROYAL APPLIANCE MANUFACTURING CO. ,  SOVIS, John, F. ,  SMITH, Robert, M. ,  BRAMHALL, George, H.

IPC: A47L05/24

CPC classification number: A47L9/22 ,  A47L5/24 ,  A47L5/26

Abstract: A hand vacuum cleaner comprising a lightweight motor housing (10) containing a revolving brush (96). A bag assembly (12) selectively separable from the housing is sealable to the housing with an elastomeric retaining ring (32) including a sealing and retaining bead (34) received in a recessed slot area (30) of a bag attachment collar (26). A fan (66) is mounted on a motor shaft locking surface (84) including a wall portion tapering towards the fan. The shaft locks onto a mating fan bore locking surface (88). A shaft extension (90) threaded on the motor shaft (80) is urged against the fan by resistance of a belt driving a revolving brush (96) which continually tightens the shaft extension on the motor shaft. A stone shield (60) is circumferentially spaced about the fan to block items impinging against the housing from the fan from damaging the housing. The housing further includes an air deflector received in the bag assembly having end portion disposed radially inwardly from the housing outer wall whereby the deflector directs the working air to facilitate greater storage of vacuumed dirt in the bag and prevent heavy objects received in the bag from rolling back into the housing and contacting the fan. A nozzle guard (102) is mounted on a nozzle (20) including brush bearing housing retaining elements (106) disposed for an interference fit with the bearing housing (98) whereby the brush is positively retained in the nozzle.