Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1998-07-07
2000-04-25
Moore, Chris K.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
151441, 15410, A47L 932
Patent
active
060528648
ABSTRACT:
A vacuum cleaner includes an elongate housing which has a front end wall defining an air inlet, a rear end wall defining an inserting hole, and a circumferential wall between the front and rear end walls to define a dust collecting chamber. An air impeller is disposed in the housing posterior to the dust collecting chamber to create a vacuum behind the air inlet. A handle includes a handgrip portion and an inserting shaft portion that is disposed to slidably move along a longitudinal guiding way, and that is retractable to be hidden in the elongate housing. The inserting shaft portion has a distal section relative to the handgrip portion. A retaining member is disposed on the circumferential wall adjacent to a rear segment of the guiding way. Two spring-loaded engaging members are respectively disposed in and are radially retractable to position such that the inserting shaft portion in a retracted or pulled-out position. A release actuating member is mounted on the circumferential wall and is depressible externally to release one of the engaging members from the retaining member against the action of the respective engaging member.
REFERENCES:
patent: 2660457 (1953-11-01), Mallon
patent: 4660246 (1987-04-01), Duncan et al.
patent: 4662026 (1987-05-01), Sumerau et al.
patent: 4766638 (1988-08-01), McDowell
patent: 4989295 (1991-02-01), Guhne et al.
patent: 5083340 (1992-01-01), Takahashi et al.
patent: 5850667 (1998-12-01), Orsini
patent: 5867862 (1999-02-01), Ahlf et al.
Airtek Industry Corp.
Moore Chris K.
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