Safety interlock for the food pusher in a food processor

Details Safety interlock for the food pusher in a food processor Safety interlock for the food pusher in a food processor

1978-11-13

1980-08-12

Rosenbaum, Mark

Solid material comminution or disintegration

Apparatus

With means to protect operator from injury

241 92, 2412821, B02C 1816

Patent

active

042169178

ABSTRACT:
An improvement in a food processor of the type having a housing enclosing a motor, a drive shaft extending from the housing, a working bowl which is detachably mountable on the housing in position to surround the shaft for receiving the various rotatable food processing tools which are removably installed on the shaft, with a removable cover on the bowl. Food processors of this type normally include a hopper or feed tube which is carried by the cover, and a manually operated pusher or plunger which is used to feed food items down through the hopper onto the rotating cutter blade, slicing disc, rasping tool, etc. The improvement comprises a safety interlock between a switch actuator associated with the cover and an on-off switch in the housing to permit actuation of the relatively powerful motor drive when the pusher is being properly inserted within the hopper, thereby preventing a user from inserting a hand down into the hopper where there is risk of inadvertently encountering injury from a rotating tool in the upper portion of the bowl. By virtue of this interlock, the feed tube can safely be made to have a larger cross-sectional area so that larger food items can be inserted whole into the food processor. Moreover, the entire size of the working bowl, cover and feed tube can be proportionately enlarged for providing a larger overall machine.

REFERENCES:
patent: 3892365 (1975-07-01), Verdun
patent: 4081144 (1978-03-01), Bouillet
patent: 4117980 (1978-10-01), Hartmann

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