A - Human Necessities – 47 – J
Patent
A - Human Necessities
47
J
146/38
A47J 19/00 (2006.01) A47J 43/046 (2006.01) A47J 43/07 (2006.01) B26D 7/24 (2006.01) F16P 3/10 (2006.01)
Patent
CA 1170150
S P E C I F I C A T I O N MAGNETIC SAFETY INTERLOCK METHOD AND APPARATUS FOR FOOD PROCESSOR Inventors: Carl G. Sontheimer Allen F. Podell ABSTRACT OF THE DISCLOSURE Safety interlock method and apparatus employing magnetic effects for a food processor of the type having a base housing enclosing a motor drive, a working bowl which is detachably mountable on the base housing in position for re- ceiving various rotatable food processing tools which are removably installed on a tool drive in the bowl, with a re- movable 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 safety interlock in one of its embodiments prevents actuation of the relatively powerful motor drive, so that the food proces- sing tool does not rotate unless two conditions have been met, namely, (1) unless the working bowl is mounted in proper posi- tion on the base housing, and (2) the cover is held in proper position on the bowl. The cover thereby prevents the user from inadvertently inserting a hand down into the working bowl. This safety interlock in another of its embodiments prevents actuation of the motor drive unless three conditions have been met, namely, (1) bowl in proper place on the base housing, (2) cover in position on the bowl, and (3) the food pusher is inserted into the feed tube in the cover. In the case of a relatively large feed tube, the user is prevented from inad- vertently inserting a hand or foreign object down the feed tube by the food pusher where there is risk of encountering injury from a rotating tool in the bowl. By virtue of this -1- latter 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. The various interlock systems employ magnetic effects advantageously in ways for increasing their discrimination against inadvertent actuation by ordinary magnets.
378079
Podell Allen F.
Sontheimer Carl G.
Cuisinarts Inc.
Westell & Hanley
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