US4286133A — Bi-rotational microwave oven turntable/rotisserie

Claim 1

Independent Claim 125 words

Structure for movably carrying food products in a microwave oven cavity for improved subjection thereof to microwave energy therein, said carrying structure comprising: a spit; support means for supporting said spit in said cavity for rotation about a first, spit axis; drive means for rotatively turning said support means about a second, fixed axis; a turntable for supporting food products; means rotatively mounting said turntable to said support means for revolving about a third axis spaced from said second axis; means for rotatively driving said turntable about said second axis while revolving about said third axis; and means driven by the turntable for causing said spit to rotate about said first axis as an incident of said turntable being rotatively driven about said second axis.

Claim 2

Dependent Claim 125 words

Structure for movably carrying food products in a microwave oven cavity for improved subjection thereof to microwave energy therein, said carrying structure comprising: a spit; support means for supporting said spit in said cavity for rotation about a first, spit axis; drive means for rotatively turning said support means about a second, fixed axis; a turntable for supporting food products; means rotatively mounting said turntable to said support means for revolving about a third axis spaced from said second axis; means for rotatively driving said turntable about said second axis while revolving about said third axis; and means driven by the turntable for causing said spit to rotate about said first axis as an incident of said turntable being rotatively driven about said second axis.

Claim 3

Dependent Claim 27 words

The food product carrying structure of claim 1 wherein said third axis is moved along an annular path as an incident of rotation of said support means.

Claim 4

Dependent Claim 25 words

The food product carrying structure of claim 1 wherein said means for causing said spit to rotate about said first axis comprises a driven gear.

Claim 5

Dependent Claim 24 words

The food product carrying structure of claim 1 wherein said means for causing said spit to rotate about said first axis comprises toothed means.

Claim 6

Dependent Claim 15 words

The food product carrying structure of claim 1 wherein said turntable comprises a dished member.

Claim 7

Dependent Claim 55 words

The food product carrying structure of claim 1 wherein said turntable comprises a plate member having a toothed periphery, and said spit is provided with a toothed driven member meshing with said toothed periphery for rotating said spit about said first axis as an incident of rotation of said plate member about said third axis.

Claim 8

Dependent Claim 79 words

In a microwave oven having an oven cavity and a rotisserie device disposed in said oven cavity and having a turntable and a spit rotatively carried on a support, the improvement comprising: first rotating means for rotating the turntable about a turntable axis and revolving the turntable about a fixed axis spaced from said turntable axis; and second rotating means driven by the revolving turntable for rotating the spit about its longitudinal axis and concurrently about said fixed axis.

Claim 9

Dependent Claim 79 words

In a microwave oven having an oven cavity and a rotisserie device disposed in said oven cavity and having a turntable and a spit rotatively carried on a support, the improvement comprising: first rotating means for rotating the turntable about a turntable axis and revolving the turntable about a fixed axis spaced from said turntable axis; and second rotating means driven by the revolving turntable for rotating the spit about its longitudinal axis and concurrently about said fixed axis.

Claim 10

Dependent Claim 22 words

The microwave oven structure of claim 7 wherein said spit defines a rod intersecting said turntable axis and extending asymmetrically radially therefrom.

Claim 11

Dependent Claim 16 words

The microwave oven structure of claim 7 wherein said second rotating means comprises toothed drive means.

Claim 12

Dependent Claim 15 words

The microwave oven structure of claim 7 wherein said second rotating means comprises gear means.

Claim 13

Dependent Claim 19 words

The microwave oven structure of claim 7 wherein said turntable defines drip collecting means subjacent said rotisserie spit portion.

Claim 14

Dependent Claim 44 words

The microwave oven structure of claim 7 wherein said first rotating means includes a fixed hub and a rotative drive shaft journaled in said hub and fixedly connected to said support, and means engaging said hub for revolving said turntable about said turntable axis.

Claim 15

Dependent Claim 108 words

In a microwave oven having an oven cavity, a turntable, and a rotisserie device disposed in said oven cavity and having a support portion and a spit portion carried by the support portion, the improvement comprising: first rotating means for rotating the support portion about a first axis; second rotating means for rotating the spit portion about a second axis concurrently with the rotation of the support portion about said first axis; and means for rotatably mounting said turntable to said support portion for revolution about said first axis while concurrently rotating said turntable about a third axis extending parallel to and spaced radially from said first axis.

Claim 16

Dependent Claim 108 words

In a microwave oven having an oven cavity, a turntable, and a rotisserie device disposed in said oven cavity and having a support portion and a spit portion carried by the support portion, the improvement comprising: first rotating means for rotating the support portion about a first axis; second rotating means for rotating the spit portion about a second axis concurrently with the rotation of the support portion about said first axis; and means for rotatably mounting said turntable to said support portion for revolution about said first axis while concurrently rotating said turntable about a third axis extending parallel to and spaced radially from said first axis.

Claim 17

Dependent Claim 22 words

The microwave oven structure of claim 13 wherein said first axis is vertical and said second axis is inclined to the vertical.

Claim 18

Dependent Claim 20 words

The microwave oven structure of claim 13 wherein said turntable defines an upwardly opening dish-shaped member subjacent said spit portion.

Claim 19

Dependent Claim 85 words

The combination in a microwave oven of: a rotatable spit for support of food articles; and drive means having a single rotatable input drive shaft and means driven by rotation of said drive shaft about a fixed drive shaft axis for causing said spit to concurrently (a) rotate about its longitudinal axis, and (b) revolve about said fixed drive shaft axis and (c) rotate about an axis spaced from said fixed drive shaft axis for improved distribution of microwave energy throughout food articles being cooked.

Claim 20

Dependent Claim 85 words

The combination in a microwave oven of: a rotatable spit for support of food articles; and drive means having a single rotatable input drive shaft and means driven by rotation of said drive shaft about a fixed drive shaft axis for causing said spit to concurrently (a) rotate about its longitudinal axis, and (b) revolve about said fixed drive shaft axis and (c) rotate about an axis spaced from said fixed drive shaft axis for improved distribution of microwave energy throughout food articles being cooked.

Claim 21

Dependent Claim 96 words

The combination in a microwave oven of: a turntable for support of food articles which turns during a cooking operation for uniform distribution of microwave energy throughout the food; a rotatable spit for support of food articles which also turns during the cooking operation; and drive means for driving the turntable and causing the driven turntable to rotate said spit, said turntable revolving about a fixed drive axis, and rotating about an axis spaced from said fixed drive axis, said turntable having driving projections on its periphery which cooperate with driven means attached to the spit.

Claim 22

Dependent Claim 96 words

The combination in a microwave oven of: a turntable for support of food articles which turns during a cooking operation for uniform distribution of microwave energy throughout the food; a rotatable spit for support of food articles which also turns during the cooking operation; and drive means for driving the turntable and causing the driven turntable to rotate said spit, said turntable revolving about a fixed drive axis, and rotating about an axis spaced from said fixed drive axis, said turntable having driving projections on its periphery which cooperate with driven means attached to the spit.

Claim 23

Dependent Claim 13 words

The combination claimed in claim 17 wherein the driven means comprises a gear.

Claim 24

Dependent Claim 22 words

The combination claimed in claim 17 wherein the driven means is a wall member spaced from a pointed end of the spit.

Claim 25

Dependent Claim 19 words

The combination claimed in claim 17 wherein the turntable has a peripheral edge which is upturned to retain liquids.

Claim 26

Dependent Claim 117 words

The combination in a microwave oven having means forming a cavity for cooking food of: a turntable within the cavity for rotational support of food articles undergoing cooking in the oven; drive means for rotating the turntable about a first axis and concurrently revolving the rotating turntable about a second parallel axis for facilitated distribution of microwave energy throughout food undergoing cooking in the oven; additional support means within said cavity for supporting food articles undergoing cooking in the oven; and additional drive means cooperating with said first named drive means for causing said additional support to have three different concurrent movements including rotation about said first axis, revolution about said second axis, and an additional movement.

Claim 27

Dependent Claim 117 words

The combination in a microwave oven having means forming a cavity for cooking food of: a turntable within the cavity for rotational support of food articles undergoing cooking in the oven; drive means for rotating the turntable about a first axis and concurrently revolving the rotating turntable about a second parallel axis for facilitated distribution of microwave energy throughout food undergoing cooking in the oven; additional support means within said cavity for supporting food articles undergoing cooking in the oven; and additional drive means cooperating with said first named drive means for causing said additional support to have three different concurrent movements including rotation about said first axis, revolution about said second axis, and an additional movement.

Claim 28

Dependent Claim 125 words

The combination in a microwave oven having means forming a cavity for cooking food of: a turntable within the cavity for rotational support of food articles undergoing cooking in the oven; drive means for rotating the turntable about a first axis and concurrently revolving the rotating turntable about a second parallel axis for facilitated distribution of microwave energy throughout food undergoing cooking in the oven; and a rotatable spit, said drive means further including means for rotating the spit about a third axis during the cooking operation, said spit being further rotated about said second axis during turning of the turntable for rotational movement of food articles supported by said spit during a cooking operation in said oven for uniform heating of said food articles.

Claim 29

Dependent Claim 125 words

The combination in a microwave oven having means forming a cavity for cooking food of: a turntable within the cavity for rotational support of food articles undergoing cooking in the oven; drive means for rotating the turntable about a first axis and concurrently revolving the rotating turntable about a second parallel axis for facilitated distribution of microwave energy throughout food undergoing cooking in the oven; and a rotatable spit, said drive means further including means for rotating the spit about a third axis during the cooking operation, said spit being further rotated about said second axis during turning of the turntable for rotational movement of food articles supported by said spit during a cooking operation in said oven for uniform heating of said food articles.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1984-08-24	1985-02-23	1985-08-25	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1988-08-24	1989-02-23	1989-08-25	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1992-08-24	1993-02-23	1993-08-25	$7700.00	Window Closed / Lapsed

Bi-rotational microwave oven turntable/rotisserie

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