Anti jamming device for a vacuum hose

Details Anti jamming device for a vacuum hose Anti jamming device for a vacuum hose

2008-01-29

2008-01-29

Redding, David (Department: 1744)

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

C015S323000, C015S324000, C242S334000

Reexamination Certificate

active

11187497

ABSTRACT:
A vacuum system has a cabinet that can be mounted to a wall. The cabinet includes a hose connectable to a vacuum source. The hose is extendible from the cabinet between extended and retracted positions. A rotatable shaft drives the hose and a power source causes the rotatable shaft to rotate. A sensor measures the speed of rotation of the shaft and signals a controller to stop the power source when the speed falls below a predetermined threshold.

REFERENCES:
patent: 3911944 (1975-10-01), Hukuba et al.
patent: 4655399 (1987-04-01), Harvey
patent: 5740581 (1998-04-01), Harrelson, II
patent: 5740582 (1998-04-01), Harrelson, II

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