Firefighter's ceiling cutting tool

Cutlery – Cutting tools – With blade moving means

Patent

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Details

30391, B26B 700

Patent

active

055421830

ABSTRACT:
A fire fighter's tool for cutting through ceiling and wall panels which includes a base shaft within which telescoping expandable tubular sections are stored. The base shaft carries a power cord reel, counterbalance, and a control handle. A retractable power cord extends through the core of the extendable tubular sections to a motor mounted at the distal end of the outermost telescoping tubular section. The motor is encased within a waterproof enclosure and the shaft of the motor turns concentrically with the axis of the extendable tubular shafts. Gears and belt driving means connect the motor to a transverse shaft rotating a circular cutting blade on an axis perpendicular to the axis of the extendable tubes. The blade is provided with a pair of fan-like shields spring biased to substantially enclose the blade when it is not actively cutting, but which retract to expose the blade when slight pressure is applied thereto when the tool is in use.

REFERENCES:
patent: 2274421 (1942-02-01), Lindstrom et al.
patent: 3812584 (1974-05-01), Peter
patent: 4081906 (1978-04-01), Sigler
patent: 4226021 (1980-10-01), Hoff
patent: 4976031 (1990-12-01), Miller

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