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US 4,904,834 AGranted
Mixing attachment for microwave oven turntables
AssigneeRaytheon Company
InventorRobert F. Bowen
Life of this patent
Estimating the term…
Abstract
A mixing attachment for stirring sauces, foods, mixtures or the like in a microwave oven. The mixing attachment includes a vertical mixing arm, a stationary blade attached to the bottom of the arm, and a cross beam, which is fastened to the top of the vertical mixing arm. The cross beam is secured to the walls within the microwave oven. One way to implement the mixer is to extend the arm downward into a cooking dish. The cooking dish contains food and rests on a turntable. When cooking food, the turntable rotates causing the food to be mixed by the stationary blade. In addition, the blade may be made to move up and down by the rotating turntable through a series of cams and a drive wheel.
Claims17
Apparatus for mixing food while heating with microwave energy, comprising:
- a microwave cavity comprising first and second opposing walls;
- means for energizing said oven cavity with microwave energy;
- a utensil for holding food, said utensil being disposed within said oven cavity;
- a turntable for rotating said utensil;
- a shaft extending downwardly into said utensil;
- and
- means for holding said shaft in a fixed position said holding means comprising a substantially horizontal bar having an adjustable length, said bar having ends engaging said opposing walls of said microwave cavity wherein, when said utensil containing food is rotated, said food is mixed by flowing across said shaft.
4 more elements
An apparatus comprising:
- a microwave oven having a cavity comprising first and second opposing walls;
- a container disposed within said cavity for holding food;
- a turntable for rotating said container;
- a shaft removably positioned in said cavity of said microwave oven, said shaft extending downwardly into said container;
- and
- means for supporting said shaft in an elevated position, said supporting means comprising a horizontal member having an adjustable length for suspending between said opposing walls, said supporting means further comprising:
- means for attaching the upper section of said shaft to said horizontal member;
- and
- means connected to the lower section of said shaft for contacting said food wherein, when said container is rotated, said food is mixed by flowing past said contacting means.
6 more elements
An apparatus comprising:
- a microwave oven having a cavity with two opposing side walls;
- a microwave transparent vertically oriented shaft removably positioned in said cavity within said oven, said shaft extending downward into food in a rotating container;
- a microwave transparent horizontal arm;
- means for fastening both ends of said arm to said opposing walls in an elevated position;
- means coupled to said arm for attaching the top of said shaft to said arm, said arm comprising:
- (a) a first arm section, said first arm section having a constant external diameter from end portion to end portion;
- (b) the outer end portion of said first arm section connected to said fastening means;
- (c) the inner end portion of said first arm section having an opening therein of a size to receive;
- (d) a second arm section, said second arm section having a constant nominal external diameter from end portion to end portion;
- (e) the outer end portion of said second arm section connected to said fastening means;
- (f) said second arm section being telescopically, slidably received within the first arm section;
- (g) means connected to said first and section arm section for adjusting the length of the arm assembly within the limits of the range of telescoping movement;
- a microwave transparent blade adapted to be in contact with said food;
- and
- means for securing the bottom of said shaft to said blade.
12 more elements
An apparatus comprising:
- a microwave oven;
- a microwave transparent shaft removably positioned in the cavity of said microwave oven, said shaft extending downwardly for inserting into food in a rotating container on a turntable;
- a vertically oriented hollow tube containing a first cammed shaft over a second cammed shaft;
- means for preventing rotation of said first cammed shaft;
- means for securing said tube to said oven;
- a drive wheel comprising a permanently centered shaft fastened to said oven;
- means for connecting said drive wheel to said turntable to rotate said drive wheel;
- means for connecting said drive wheel to said second cammed shaft to rotate said second cammed shaft;
- a horizontal arm located above said downwardly extending shaft and said first cammed shaft;
- means for fastening one end of said horizontal shaft to the top of said first cammed shaft;
- and
- means for fastening said horizontal shaft to the top of said downwardly extending shaft.
9 more elements
The method of stirring food in a microwave oven cavity, comprising the steps of:
- positioning said food to be stirred in a container within the cavity of said microwave oven;
- supporting with a telescopically adjustable horizontal arm, a shaft extending downwardly into said food in a container;
- adjusting the length of said horizontal arm to contact said opposing walls;
- rotating said container;
- and
- holding said shaft in a fixed position relative to said rotating food wherein said food is mixed by flowing across said shaft.
3 more elements
An apparatus for mixing food in a rotating utensil comprising:
- a vertically oriented shaft;
- a substantially horizontal arm comprising:
- (a) a first arm section having a substantially constant external diameter from end portion to end portion;
- (b) the inner end portion of said first arm section having an opening therein of a size to receive;
- (c) a second arm section having a substantially constant external diameter from end portion to end portion;
- (d) said second arm section being telescopically slidably received within the first arm section;
- (e) means connected to said first and second arm section for adjusting the length of the arm assembly within the limits of the range of telescoping movement;
- means for fastening the outer end of said first arm section to a first vertical surface;
- means for fastening the outer end of said second arm section to a second vertical surface;
- and
- means coupled to said horizontal arm for attaching the top of said shaft to said arm.
8 more elements
An apparatus comprising:
- a shaft extending downwardly for inserting into food in a rotating container on a turntable;
- a vertically oriented hollow tube containing a first cammed shaft over a second cammed shaft;
- means for preventing rotation of said first cammed shaft;
- means for securing said tube to a microwave oven cavity floor;
- a drive wheel comprising a permanently centered shaft adapted to be fastened to said microwave oven cavity floor;
- means for connecting said drive wheel to said turntable to rotate said drive wheel;
- means for connecting said drive wheel to said second cammed shaft to rotate said second cammed shaft;
- a horizontal arm located above said downwardly extending shaft and said first cammed shaft;
- means for fastening one end of said horizontal shaft to the top of said first cammed shaft;
- and
- means for fastening said horizontal shaft to the top of said downwardly extending shaft.
8 more elements
Dependencies are inferred from the claim text.