Vacuum cleaner suction control

Details Vacuum cleaner suction control Vacuum cleaner suction control

1976-11-12

1977-12-20

Moore, Christopher K.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

15339, 55417, 251228, 251251, 251300, A47L 900

Patent

active

040633268

ABSTRACT:
A canister type vacuum cleaner having mechanism for controlling the negative pressure in the filter bag compartment by bleeding ambient air into the compartment. The mechanism includes a pivotable valve plate for overlaying an aperture in the filter bag compartment and an operator laterally slidable across the front of the cleaner and operatively connected by cam means to the valve. The valve plate is pivoted to selectively block the aperture by an amount determined by the position of the operator and the degree of negative pressure is indicated by the lateral position of the operator.

REFERENCES:
patent: 2302972 (1942-11-01), Nuckols
patent: 2561964 (1951-07-01), Anderson
patent: 2779432 (1957-01-01), Meyerhoefer
patent: 3277512 (1966-10-01), Waters

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