Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1988-04-25
1989-04-25
Moore, Chris K.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
15361, A47L 528, A47L 534
Patent
active
048234290
ABSTRACT:
A low cost mechanism for disengaging the brush which agitates the surface over which the vacuum cleaner nozzle moves by lifting the portion of the nozzle having the brush mounted therein above the surface. The lift mechanism is reciprocably mounted in the nozzle housing rearwardly of the brush and extends outwardly from the nozzle housing to lift the forward end of the housing which contains the brush by pivoting the housing about the rear wheels. The lift mechanism is implemented by a stanchion having posts with upper ends extending from a bar. The bar has a trough facing the surface over which the cleaner moves. A roller having a width about at least one-third the width of the nozzle housing is journaled in the trough and extends out of the base. The roller is mounted with its axis generally paralleling the axis of rotation of the brush. The stanchion is also located adjacent to the body or canister portion of the vacuum cleaner for engagement with a surface at the bottom of the body. The body is pivotally mounted in the nozzle housing and pivots from a rearward floor cleaning position to an upright above the floor cleaning position. Then the surface of the bottom engages the upper ends of the stanchion posts and reciprocates the stanchion to bring the base and roller out through the bottom of the nozzle housing thereby causing forward end of the housing and the brush to lift off the surface.
REFERENCES:
patent: 824733 (1906-07-01), Merrick et al.
patent: 1678111 (1928-07-01), Frantz
patent: 2104453 (1938-01-01), Dow
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patent: 2664587 (1954-01-01), Kitto
patent: 3512207 (1970-05-01), Ettridge
patent: 3579699 (1971-05-01), Balzer
patent: 4217674 (1980-08-01), Hayashi et al.
patent: 4446594 (1984-05-01), Watanabe et al.
patent: 4686736 (1987-08-01), Petralia
Lukacher Martin
Moore Chris K.
The Regina Co., Inc.
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