Solid material comminution or disintegration – Apparatus – With means to protect operator from injury
Patent
1979-03-05
1980-10-07
Rosenbaum, Mark
Solid material comminution or disintegration
Apparatus
With means to protect operator from injury
2412821, B02C 1812
Patent
active
042263735
ABSTRACT:
A feed tube protector for a food processor having a motor, with a working bowl, a motor-driven shaft in the bowl for receiving rotatable tools, and with a removable cover positioned on the bowl during operation. Food processors normally include a feed tube and a manual food pusher used to feed items through this feed tube to the rotating tool. The feed tube protector has an outer sleeve carrying an actuator for enabling machine operation only when this sleeve is properly positioned over the feed tube. This sleeve is associated with a movable food pusher mounted for movement within the sleeve. When the cover is positioned on the bowl and this sleeve is mounted over the feed tube, the food pusher is manually movable within the passageway in the feed tube, and the actuator on the sleeve is operatively associated with control means to permit operation of the motor drive. Thus, inadvertent insertion of a hand or a foreign object through the feed tube is prevented when the tool is being driven. By virtue of this arrangement, the feed tube can safely be shortened and have a larger cross-sectional area than in UL-approved food processors commercially available for home use, so that larger food items can be inserted whole or elongated items horizontally in the feed tube. Moreover, the invention permits the bowl, cover and feed tube to be proportionally enlarged without compromising safety now provided by tall and narrow feed tubes in prior art machines.
REFERENCES:
patent: 3892365 (1975-07-01), Verdun
patent: 4081144 (1978-03-01), Bouillet
patent: 4117980 (1978-10-01), Hartmann
Rosenbaum Mark
Wilson Research & Development Inc.
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