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US 3,951,351 AGranted
Multi-purpose kitchen appliance
AssigneeOster Corporation
InventorsPeter Jacob Ernster, William Joseph Collins, George Henry Schaefer
Life of this patent
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AssigneeOster Corporation
InventorsPeter Jacob Ernster, William Joseph Collins, George Henry Schaefer
Estimating the term…
A multi-purpose kitchen appliance for performing the functions of food mixing, blending, and the grinding or chopping of food. A power unit includes a low speed and a high speed power delivery shaft at the upper end thereon which are connectable alternatively to a blender vessel or a transversely extending head including gearing to drive a pair of food mixing elements. The head for driving the mixing elements is provided with means for detachably supporting and driving other attachments such as a food grinder. The power unit rests on a base having a laterally extending portion which has a turntable supporting a bowl into which the food mixing elements extend when the transversely extending head is positioned for food mixing. The transverse head is mountable on the power unit in alternate positions so that by connecting the food grinder to the gear train in the head, the chopped food or meat may be delivered to the bowl position on the turntable. The head is provided with means to pivotally connect it to the power unit or to rigidly latch the head in a fixed position with respect to the power unit.
A combination food preparation appliance comprising a power unit including a motor supported in a housing with said motor having a shaft extending vertically, said housing being generally of inverted cup shape with a laterally extending platform at the bottom edge thereof for support of a mixing bowl, drive means connected to said motor and extending outwardly of said housing through an opening in the top of said housing, a blender vessel having mixing means mounted within the bottom of said vessel with first coupling means for drivingly connecting said mixing means with said power unit drive means, an elongated mixing head having mounting means and second coupling means at one end thereof and beater spindles for mounting beaters at the other end thereof, said second coupling means driving said beater spindles through gearing in said mixing head, attachment mounting means supported on said power unit housing surrounding said drive means and having means for alternatively supporting said blender vessel and said mixing head, said attachment mounting means mounting said mixing head in a first or a second position on said power unit extending generally horizontally with said second coupling means in driven engagement with said drive means, in said first position said beaters extending into said mixing bowl positioned on said platform, in said second position said other end of said mixing head supporting said beaters extending away from said power unit in the opposite direction from said platform to permit an attachment mounted on said mixing head to overhang said platform and said mixing bowl.
A combination food preparation appliance comprising a power unit including a motor supported in a housing with said motor having a shaft extending vertically, said housing being generally of inverted cup shape with a laterally extending platform at the bottom edge thereof for support of a mixing bowl, drive means connected to said motor and extending outwardly of said housing through an opening in the top of said housing, a blender vessel having mixing means mounted within the bottom of said vessel with first coupling means for drivingly connecting said mixing means with said power unit drive means, an elongated mixing head having mounting means and second coupling means at one end thereof and beater spindles for mounting beaters at the other end thereof, said second coupling means driving said beater spindles through gearing in said mixing head, attachment mounting means supported on said power unit housing surrounding said drive means and having means for alternatively supporting said blender vessel and said mixing head, said attachment mounting means mounting said mixing head in a first or a second position on said power unit extending generally horizontally with said second coupling means in driven engagement with said drive means, in said first position said beaters extending into said mixing bowl positioned on said platform, in said second position said other end of said mixing head supporting said beaters extending away from said power unit in the opposite direction from said platform, said attachment mounting means including a ring which is secured to said power unit housing and which is generally concentric with said high speed drive, said ring having an inner diameter which receives the lower end of said blender vessel to support said vessel with said first coupling means in driven connection with said high speed drive, means including support brackets which extend from opposite sides of said ring, a trunnion associated with said mixing head to engage either one of said brackets to pivotally connect said mixing head to said power unit, said mixing head trunnion being at the opposite end of said mixing head from said beater spindles, and latch means mounted on the bottom of said mixing head intermediate the ends thereof for engaging the other of said brackets when said trunnion is engaged with one of said brackets, said latch means retaining said mixing head against pivotal movement about said one bracket.
A multi-purpose appliance comprising a blender vessel having rotatable mixing means in the lower portion thereof, a mixing head, a food grinding attachment, a power unit having an upright portion and a bowl support which extends laterally of said upright portion, said mixing head being elongated and having coupling means at one end for connection to said power unit and downwardly extending beaters at the other end thereof, gearing in said head for drivingly connecting said coupling means to said beaters, support means for detachably mounting said head on said power unit with said coupling drivingly connected to said power unit, said support means detachably mounting said blender vessel with said mixing means driven by said power unit, a power take-off on said head at the end remote from said beaters, means detachably connecting said attachment to said head, said support means mounting said head in either of two alternative positions one with said beaters extending into a bowl on said bowl support and one with said food grinding attachment discharging into said bowl.
A food preparation appliance comprising a portable power unit for driving a blender and a food mixer attachment, said power unit having a motor with a direct drive extending therefrom to drive a blender attachment, said power unit having reduction gearing driven by said motor and including a low speed output shaft for driving a mixing attachment, a blender vessel having comminuting blades in the bottom thereof with drive coupling means at the bottom of the vessel for engagement with said direct drive, an elongated mixing attachment having means at one end for mounting said attachment on said power unit and means at the other end mounting food beaters, said mixing attachment having a frame supporting a mixer coupling means for driven engagement with said low speed output shaft, step up gearing on said frame interconnecting said mixer coupling means with said food beater mounting means to rotate said beaters at a speed greater than the speed of said low speed output shaft, said motor rotating said direct drive at a speed on the order of 18,000 rpm, said reduction gearing providing said low speed output shaft with a speed on the order of 250 rpm and said step up gearing and said mixing attachment providing said beaters with a speed on the order of 830 rpm.
A multi-purpose appliance comprising a power unit having a housing enclosing a motor with its armature shaft extending vertically, a first output shaft connected to and coaxial with said armature shaft extending from the upper portion of said housing, gear reduction means driven by said motor and coupled to a second output shaft positioned adjacent said first shaft, a blender vessel having mixing means therein, means on said housing supporting said vessel with said mixing means in driven engagement with said first shaft, an elongated mixing head having food mixing means extending downwardly from one end thereof, step up gearing in said head having an input coupling and the output of said gearing being connected to spindles for supporting said food mixing means, mounting means for detachably securing said head to said housing with second shaft drivingly connected to said input coupling, a food grinder having a rotatable screw, a secondary power takeoff on said head driven by said input coupling bypassing said step up gearing in said head, means mounting said grinder on said head with said secondary power takeoff driving said screw.
A food preparation appliance comprising a power unit for driving a variety of attachments, said power unit having a motor enclosed in a housing with drive means connected to said motor and extending outwardly from the top of said housing, attachment mounting means comprises a ring which is secured to said power unit housing and which is generally concentric with said drive means, a blender vessel having mixing means arranged to be driven by said power unit, said ring having an inner diameter which receives the lower end of said blender vessel to support said vessel with said mixing means in driven connection with said drive means, means including support brackets which extend from opposite sides of said ring, an elongated mixing head having power coupling means at one end and depending food beaters at the other end, a trunnion associated with said mixing head to engage either one of said brackets to pivotally connect said mixing head to said power unit, said mixing head trunnion being at the opposite end of said mixing head from said food beaters, and latch means mounted on the bottom of said mixing head intermediate the ends thereof for engaging the other of said brackets when said trunnion is engaged with one of said brackets, said latch means retaining said mixing head against pivotal movement about said one bracket with said coupling means in driven connection with said drive means.
A food preparation appliance comprising a power unit for driving a variety of attachments, said power unit having a motor enclosed in a housing with drive means connected to said motor and extending outwardly from the top of said housing, attachment mounting means comprising a ring which is secured to said power unit housing and which is generally concentric with said drive means, a blender vessel having mixing means arranged for driven engagement by said power unit, said ring having an inner diameter which receives the lower end of said blender vessel to support said vessel with said mixing means in driven connection with said drive means, means including a support bracket which extends from one side of said ring, an elongated mixing head having power coupling means at one end and depending food beaters at the other end, a trunnion associated with said mixing head to engage said bracket to pivotally connect said mixing head to said power unit whereby said mixing head is pivotal from a horizontally extending position with drive means and coupling means engaged to an elevated position in which said beaters are raised above the normal level of a mixing bowl, said mixing head trunnion being at the opposite end of said mixing head from said food beaters, stop means on said mixing head to retain said mixing head in said elevated position, said stop means being movable between an operative position which it engages said ring to restrain pivotal movement of said mixing head in said elevated position and a retracted position in which said mixing head is released for pivotal movement to a horizontally extending position said stop means including gravity actuated stop levers pivoted to said mixing head on an axis parallel to the axis on which said head is pivoted, said ring having a flat upper surface engaged by said levers, said stop levers in their operative position engaging the upper surface of said ring to prevent downward pivotal movement of said mixing head.
A multi-purpose appliance comprising a blender vessel having rotatable mixing means in the lower portion thereof, a mixing head, a food grinding attachment, a power unit having an upright portion and a bowl support which extends laterally of said upright portion, said mixing head being elongated and having coupling means at one end for connection to said power unit and downwardly extending beaters at the other end thereof, gearing in said head for drivingly connecting said coupling means to said beaters, support means for detachably mounting said head on said power unit with said coupling drivingly connected to said power unit, said support means detachably mounting said blender vessel with said mixing means driven by power unit, a power take-off on said mixing head at the end remote from said beaters, means detachably connecting said attachment to said head, said power unit includes a high speed output drive and a low speed output drive, said mixing head having means coupling to said low speed output when said mixing head is mounted on said power unit, said gearing in said mixing head being step up gearing driving said beaters at a greater speed than said low speed output drive, drive means in said mixing head drivingly connecting said power take-off to said low speed output drive and bypassing said step up gearing to drive said food grinding attachment at a low speed.
Dependencies are inferred from the claim text.