Hand-held electric beater-mixer

Details Hand-held electric beater-mixer Hand-held electric beater-mixer

1997-09-18

1998-09-08

Cooley, Charles E.

Agitating

Operator supported

366344, A47J 4307, B01F 1304

Patent

active

058035982

DESCRIPTION:

BRIEF SUMMARY
FIELD OF THE INVENTION

The present invention relates to a hand-held electric beater-mixer, particularly a kitchen beater-mixer, adapted to drive selectively at least one beating accessory such as for example a whisk, or a mixing accessory such as for example a mixing foot, comprising a housing of generally prismatic shape enclosing an electric drive motor, two rotatable coupling devices which are associated with the shaft of the motor, of which one opens into the base of the housing through an opening through which the beating mixer can be secured, and of which the other communicates with the exterior of the housing through a coupling opening through which the mixing accessory can be fixed, a control switch for the electric motor which is actuated by a manual operating button having a body mounted in the upper portion of the housing, in the front of the latter in the region overhanging the beating accessory, and which is adapted to occupy a "stop" position, one or several "continuous operation" positions, and an "instantaneous operation" position, an ejection member associated with the coupling device of the beating accessory and displaceable in height from a low position in the absence of the beating accessory to a high position under the action of said beating accessory upon its engagement in the corresponding coupling device, as well as mechanical means preventing bringing the switch into "continuous operation" position when the mixing accessory is inserted in its coupling device and permitting bringing the switch into the "continuous operation" position or into "instantaneous operation" position when the beating accessory is inserted into its coupling device.
There is meant by beating accessory a working tool of the whisk or mixer type, and by mixing accessory an accessory with a working tool turning at high speed of the mixer foot type with rotating helix, or again of the mixing bowl type with rotating knife.


BACKGROUND OF THE INVENTION

There is known an apparatus of this type which responds well to the safety requirements for use consisting in preventing only continuous operation of the motor in the presence of the mixing accessory, for the purpose of preventing operation of the apparatus with its switch blocked into the "continuous operation" position during critical situations such as for example that in which the apparatus in service slips from the hand of the user. In this apparatus, the coupling opening of the mixing accessory is located in the front of the apparatus, on the same side as the rotatable actuating button of the control switch of the electric motor, and the mechanical safety means preventing bringing the switch into the "continuous operation" position in the presence of the mixing accessory, are constituted by a vertical finger which is mounted on a sliding closure associated with the coupling opening of the mixing accessory and which, after opening the closure by sliding in the vertical direction, blocks the rotatable axle of the button from the side of its "continuous operation" positions.
However, there exist at present numerous hand-held electric beater-mixers which themselves comprise a coupling opening for the mixing member which is located, not in the front of the apparatus, but in the rear of the latter, opposite the actuating button for the switch, such that the mechanical safety means of the prior art, described above, are evidently useless for these beater-mixers.


SUMMARY OF THE INVENTION

The invention has for its object to overcome this drawback and to provide a hand-held electric beater-mixer of the type with a coupling opening for the mixing accessory located in the rear of the apparatus, opposite the actuating button of the switch, in which the prevention of bringing the switch into the "continuous operation" position in the presence of the mixing accessory and the permission to bring said switch into "continuous operation" position or into "instantaneous operation" position in the presence of the beating accessory, are obtained by simple and reliable mechanica

REFERENCES:
patent: 3328001 (1967-06-01), Zasadny et al.
patent: 3533600 (1970-10-01), Gerson
patent: 3595093 (1971-07-01), Du Bois
patent: 3604114 (1971-09-01), Swanke et al.
patent: 3619754 (1971-11-01), Fuchs
patent: 5316382 (1994-05-01), Penaranda et al.

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