Power working machine

Details Power working machine Power working machine

1999-02-02

2000-08-22

Moore, Chris K.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

15326, 15405, A47L 514

Patent

active

061052051

ABSTRACT:
A power working machine has a noise level display device which enables the noise level of the machine to be easily recognized with the naked eyes. When compressed air that is pressurized and delivered by a blower fan is delivered to an air-ejecting pipe, a noise level proportional to the magnitude of the force of the ejected air flow is indicated by the noise level display device, which is mounted on the air-ejecting pipe.

REFERENCES:
patent: 3587515 (1971-06-01), Anderson
patent: 4615069 (1986-10-01), Henning
patent: 4694528 (1987-09-01), Comer et al.
patent: 4884314 (1989-12-01), Miner et al.
patent: 5035586 (1991-07-01), Sadler et al.
patent: 5195208 (1993-03-01), Yamami et al.

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