Rotary Patents (Class 126/338)
  • Patent number: 10739009
    Abstract: A method and apparatus for a gas burner head with one or more rotating burners. The gas burner head may include an outer burner and an inner burner rotating about an axis. Multiple gas burner heads may be rotatably interconnected. Rotating one or more burners within one or more gas burner heads may allow a variety of burner characteristics and/or patterns. One or more gas burner heads may be used in a variety of applications.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: August 11, 2020
    Assignee: MIDEA GROUP CO., LTD.
    Inventors: Richard W. Cowan, Mark W. Wilson, Vern Neal
  • Patent number: 10624353
    Abstract: The present invention relates to a small, lightweight, portable or easily removable high temperature oven with a rotating floor, designed to bake one pizza at a time, and operate between 300 and 1400° F., with mechanisms to independently regulate the temperature of the dome and the floor of the oven, using thermocouples, infrared sensors, other temperature sensors, industrial oven controllers, other programmable logic controllers, solenoid gas valves, or proportional response gas valves, baffles and ventilation systems and other heat sources, control sensing and regulation systems, to imitate the baking conditions of a heavy ceramic traditional Italian cupola oven. Different embodiments include portable catering ovens, food truck ovens, very small pizzeria ovens, and residential ovens with automatic controls, that are approximately conventional residential countertop depth.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: April 21, 2020
    Inventor: John Langley
  • Patent number: 10512361
    Abstract: The present invention discloses a grilling oven comprising an oven body and a grilling chamber encircled by the oven body; an electrical heating device, a grilling grid and a fat catching plate are provided in the grilling chamber; the electrical heating device is located at the top of the grilling chamber; the fat catching plate is located at the bottom of the grilling chamber; the grilling grid is located between the electrical heating device and the fat catching plate; the grilling grid and the fat catching plate both are horizontally placed. During a grilling process, the fat of grilled meat is prevented from dripping downwards onto a heat source of the grilling oven, so that no cancerogenic substance is produced thereby or condensed on the grilled meat, thus making the grilling process more environmental and healthy, and the grilled meat safe to eat.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: December 24, 2019
    Assignee: Universal Electrical Machine Works (Huizhou) Co., Ltd.
    Inventors: Kayeung To, Kafai To
  • Patent number: 9775468
    Abstract: The device comprises a square metal base plate with an anchor post, a tine holder that fits over the base plate anchor post, and a plurality shaped tines of circular cross-section that are inserted into the tine holder. The shaped tines are inserted into the food to be cooked. A plurality of tines are inserted into a hole on the tine holder. The tine holder assembly is then set atop the anchor post on the base plate such that the food is positioned vertically. The device is then placed directly on top of the upper grill surface.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: October 3, 2017
    Inventor: Charlie Adron Whitfield, Jr.
  • Patent number: 8936017
    Abstract: Provided is a cooking/grilling apparatus, primarily for outdoor use, providing smoking and/or direct or indirect heat cooking capability, and offering the user enhanced cooking flexibility, temperature control, safety and convenience of operation. The grill apparatus is unique in that it offers a downward opening lid that rotates, such as on rollers or a pivot mechanism, to a fully open position beneath the base plate of the cooking enclosure, and reverses to an upward rotation to re-close the cooking enclosure. Moreover, the grill apparatus offers a vertically adjustable cooking grate, controlled by a continuous loop cable, moving over a set of pulleys, thereby reliably controlling the height of the cooking grate when affixed to a crank on the outer surface of the grill, wherein movement of the grate can also be locked in place.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: January 20, 2015
    Inventor: Max Alejandro Holdo Baggott
  • Patent number: 8733862
    Abstract: An appliance is provided having one or more racks or shelves, the position of which may be adjusted vertically. Multiple different positions along the vertical direction can be made available for selection by a user of the appliance. One or more locking mechanisms allow for selective adjustment of the vertical position at which a shelf may be located.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: May 27, 2014
    Assignee: General Electric Company
    Inventors: James Lee Armstrong, Stephen Bernard Froelicher, Joshua Stephen Wiseman
  • Publication number: 20130167827
    Abstract: A cooking oven has a compartment in which food cooking takes place and two or more cooking planes on which foods to be cooked are put. The two or more cooking planes are arranged at different heights inside the compartment. A heat source allows the cooking of the foods.
    Type: Application
    Filed: September 15, 2011
    Publication date: July 4, 2013
    Applicant: MARANA FORNI DI MARANA FERDINANDO
    Inventor: Ferdinando Marana
  • Patent number: 8430088
    Abstract: The rotating grill top accessory involves a circular grill grate that is rotatably mounted atop a base that is placed atop an existing grill grate of an existing grill. The circular grill grate has a lip along a periphery of said grill grate so as to prevent items from rolling off of the circular grill grate either from rotating of said circular grill or otherwise. The circular grill grate rotates atop the base, which includes securing means to secure the accessory onto an existing grill grate. At least one handle extends vertically and is provided to aid in rotation of the circular grill grate.
    Type: Grant
    Filed: September 23, 2010
    Date of Patent: April 30, 2013
    Inventor: Richard Gallaher
  • Patent number: 8327837
    Abstract: A cooking range includes a cook top section. The cooking range also include an oven section having walls defining a cavity and a door, wherein the cavity being configured to accommodate food and the door being configured to open or close the cavity. The cooking range further include a heating source configured to provide heat to the cavity when the cooking range is operated. In addition, the cooking range include a rack member coupled to the cavity, and configured to support a food container placed thereon, wherein at least a part of the rack member is configured to be rotated to rotate the food thereon.
    Type: Grant
    Filed: April 21, 2010
    Date of Patent: December 11, 2012
    Assignee: LG Electronics Inc.
    Inventors: Hyeun Sik Nam, Dong Seong Kwag, Wan Soo Kim
  • Patent number: 8201552
    Abstract: An oven includes a chamber for receiving a food product rack. A heating system provides heat to the chamber for a cooking operation. A rotatable output member extends downward from a top portion of the chamber. A pivot support extends upward from a bottom portion of the chamber. A food product rack is removably located in the chamber and is releasably connected to the rotatable output member for rotation therewith. The food product rack includes a frame assembly including multiple sides. Multiple tray supports are located along the height of the frame assembly. A bottom support extends laterally between opposite sides of the frame assembly and passes through a vertical rotation axis of the frame assembly. The bottom support is connected at one end to a bottom portion of one side of the frame assembly and is connected at an opposite end to the bottom portion of an opposite side of the frame assembly.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: June 19, 2012
    Assignee: Premark FEG L.L.C.
    Inventors: Michael J. Ploof, Joseph V. Nelson
  • Publication number: 20110240005
    Abstract: The present invention is a thermally actuated turntable suitable for conventional and convection cooking ovens, which posses uneven temperature/cooking characteristics. By means of coupling dissimilar materials, each having a wide variance in their respective coefficients of thermal expansion, the relative linear expansion of these materials caused by the ambient heat found in the cooking chamber of an oven can be utilized in such a way as to create a thermo-linear motor and thus produce relatively small linear displacements of the actuator with relatively high force capabilities. This linear displacement can then be magnified by means of the mechanical advantage of levers to produce sufficient linear displacement of a rack and pinion gear set which is capable of producing multiple rotations of an attached platter during a typical short duration cooking cycle. This slow speed rotational motion is very advantageous for cooking short duration food items.
    Type: Application
    Filed: April 1, 2010
    Publication date: October 6, 2011
    Inventor: Vince S. Warner
  • Patent number: 7804050
    Abstract: A microwave oven in which a power transmission transmitting driving force of a motor moves a tray right and left without direct contact with the tray. The microwave oven includes a support disposed between a bottom plate and the tray to support the tray and the power transmission transmitting driving force of the motor to the support such that the support linearly travels. The shape of an oval guide hole formed in the support is changed to adjust the stopping time of the support at the rightmost or leftmost side. The tray linearly travels together with the support when the support linearly travels. The microwave oven further includes a tray restriction device or a tray moving device for guiding the linear movement of the tray. The tray restriction device and the tray moving device are implemented by locking steps, grooves, protrusions, or rollers.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: September 28, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeon Hong Kang, Sang Jin Jeong
  • Patent number: 7667168
    Abstract: A stackable cooking vessel arrangement for microwave ovens wherein the arrangement comprises a plurality of plate members suspended at multiple tiers by leg support members within the cooking cavity of microwave ovens.
    Type: Grant
    Filed: July 17, 2006
    Date of Patent: February 23, 2010
    Inventor: Christine Brown Smith
  • Patent number: 7276678
    Abstract: A turntable device of a microwave oven including: a motor mounted at a lower portion of a cabinet; an arm connected with a rotational shaft of the motor so as to be rotatably moved and having first and second rollers at an end thereof; a first tray disposed to be linearly moved on the bottom of the cabinet and having a slot into which the first roller is inserted; and a second tray disposed to be rotatable on an upper surface of the first tray and having a guide rail into which the second roller is inserted. A heating target received in the cabinet can be rotatably, linearly and reciprocally moved so that the cooking target can be quickly and uniformly heated. In addition, because a relative velocity difference between the first and second rollers does not occur, the first and second trays are prevented from being released.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: October 2, 2007
    Assignee: LG Electronics Inc.
    Inventors: Jong-Sik Kim, Yang-Kyeong Kim
  • Patent number: 6768088
    Abstract: A cooking shelf for a microwave oven allows food placed thereon to be equally close to its upper and lower heaters to evenly cook the food. The cooking shelf includes an upper shelf part having a certain area on which food is placed, a column part, which is downwardly extended from the upper shelf part by a certain length to support the upper shelf part, and a lower support part which is connected to a lower end of the column part and radially extended to support the column part.
    Type: Grant
    Filed: September 12, 2002
    Date of Patent: July 27, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Dae-Rae Kim
  • Patent number: 6747255
    Abstract: Disclosed is a microwave oven comprising a main casing, a cavity casing combined to the main casing so as to form a cooking compartment and having opposite side walls and a bottom plate, and a tray rotatably seated on the bottom plate of the cavity casing, the bottom plate of the cavity casing comprising a tray seating part for seating the tray on the center thereof; and an elevated part protruded upwardly around the tray seating part. With this configuration, the present invention provides a microwave oven which can increase the amount of food accommodated therein.
    Type: Grant
    Filed: March 21, 2002
    Date of Patent: June 8, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Se-hun Lee, Sang-jin Jung
  • Patent number: 6696678
    Abstract: In one aspect, a microwave oven comprising an outer case, a door secured to the outer case, and a turntable supported in the case but extending beyond a case front face is described. In an example embodiment, the outer case houses a portion of a cooking cavity, and the cooking cavity is partially defined by a bottom inner wall, a top inner wall, and side inner walls of the case. The door is secured to the case, and the door comprises an inner wall comprising a recessed portion. The oven further includes an RF energy source for supplying RF energy to the cooking cavity, a controller coupled to the RF energy source for controlling supply of RF energy to the cooking cavity, and a user interface coupled to the controller.
    Type: Grant
    Filed: November 14, 2001
    Date of Patent: February 24, 2004
    Assignee: General Electric Company
    Inventors: Jeffrey R. Hudson, Charles A. Ulmer
  • Patent number: 6403940
    Abstract: A turntable drive mechanism in a cooking oven. A driver unit is arranged outside a cooking chamber for rotationally driving a turntable, and a magnetic coupling is arranged between a revolving shaft of the turntable and another revolving shaft of the driver unit. The magnetic coupling is composed of a first coupling member attached to the revolving shaft of the driver unit and having magnets arranged so as to provide a surrounding of the revolving shaft with magnetic poles of alternately different polarities, and a second coupling member attached to the revolving shaft of the turntable and having magnets arranged so as to provide a surrounding of the revolving shaft with magnetic poles of alternately different polarities. The first and second coupling members face each other with a non-magnetic wall portion defining the cooking chamber being sandwiched therebetween.
    Type: Grant
    Filed: April 12, 2001
    Date of Patent: June 11, 2002
    Assignee: Fujimak Corporation
    Inventors: Kei Fukushima, Hiroshi Matsuo
  • Patent number: 6392212
    Abstract: A microwave oven is conveniently used even when a vibration and/or shock are applied to a vessel containing food by preventing the vessel from falling down. The microwave oven includes a cabinet having a cooking chamber and a driving chamber, a high frequency generating section for generating high frequency waves and supplying the high frequency waves to the cooking chamber, and a vessel supporting section for supporting a vessel containing food in the cooking chamber so as to prevent the vessel from falling due to a vibration and/or shock. The vessel supporting section includes a supporting member selectively installed to be contacted with a certain inner wall of the cooking chamber, and at least a supporting ring installed at a side of the supporting member for receiving and supporting the vessel.
    Type: Grant
    Filed: August 25, 2000
    Date of Patent: May 21, 2002
    Assignee: SamSung Electronics, Co., Ltd.
    Inventors: Yong-woon Han, Seong-deog Jang, Kwang-seok Kang, Han-jun Sung
  • Patent number: 6252214
    Abstract: A microwave oven to prevent a tray from deviation from its initial installed position due to vibration and/or shock, so that it can be conveniently used in a vehicle even when the vehicle is in motion. The microwave oven includes a cabinet having a cooking chamber and a driving chamber, high frequency generating section for generating high frequency waves and supplying the high frequency waves to the cooking chamber, a tray rotatably installed on the bottom of the cooking chamber, a food and/or a vessel containing food and being placed on a tray, a tray driving section provided in the driving chamber for rotatably driving the tray, and tray supporting section for rotatably supporting the tray and preventing the deviation of the tray from an initial installed position of the tray.
    Type: Grant
    Filed: September 6, 2000
    Date of Patent: June 26, 2001
    Assignee: SamSung Electronics Co., Ltd.
    Inventors: Yong-Woon Han, Seong-Deog Jang, Kwang-Seok Kang, Han-Jun Sung
  • Patent number: 6180923
    Abstract: The present invention of a spinning tray for oven mainly includes a tray body for placing food. The tray body having a hole at its center for inserting a sensor rod. A spring is disposed underneath the sensor rod, a positioning frame is placed outside the spring and is fixed underneath on the tray body. A lower board of the positioning frame is provided for the spring to be compressed against. A L-shaped stopping bar is extended from the bottom of the sensor rod. A spinning mechanism includes a positioning board, few stand poles are disposed vertically underneath on the tray body for screwing to the positioning board by screws. A main axle goes through the positioning board. The main axle is wrapped around by a spring and is sleeved with a gearing. The main axle engages with the gearing by the elasticity provided by the spring. The gearing is engaged to few gear sets and a spinning blade is activated by a gear wheel. The whole spinning mechanism is covered by a cover and is fixed on the positioning board.
    Type: Grant
    Filed: October 8, 1999
    Date of Patent: January 30, 2001
    Inventor: Po-Han Yang
  • Patent number: 6039039
    Abstract: A modular outdoor grill for cooking over a bed of combustible fuel or by means of convection heating from an externally mounted firebox. The modular grill comprises a housing with an outwardly, horizontally pivotal food-supporting tray, a vertically extending standard for supporting said housing, and either a horizontally reciprocating fuel-supporting grate or an externally mounted firebox.
    Type: Grant
    Filed: October 21, 1998
    Date of Patent: March 21, 2000
    Inventor: Amado Pina, Jr.
  • Patent number: 6028298
    Abstract: A microwave oven includes a turntable disposed in a cooking chamber. The turntable is seated on rollers which are driven about horizontal axes to rotate the turntable. The rollers are mounted on elements that can be raised and lowered, whereby the turntable is raised and lowered while being rotated. A drive mechanism which raises and lowers the rollers is reversible whereby the turntable is rotated in a first direction while being raised, and in a second direction while being lowered. Position detectors sense when the turntable has reached maximum upper and lower positions for reversing the drive mechanism.
    Type: Grant
    Filed: October 17, 1996
    Date of Patent: February 22, 2000
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Ha-Yeong Yang
  • Patent number: 5967139
    Abstract: A gas fireplace unit has a combustion chamber in which a gas burner is provided as a heat source, and the gas fireplace unit has a heat exchanger on an upper wall of the combustion chamber. A first set of ports pass through the upper wall into the combustion chamber at a position wherein they are offset from the axis of an exhaust pipe that opens to the heat exchanger. A second set comprising a port or ports is provided aligned with the exhaust pipe, and a damper is mounted to be controllable to cover or uncover the second set from the exterior of the gas fireplace unit. The damper will permit hot gases from the burner to either be directly exhausted out the second set to the exhaust pipe, or when the damper is closed cause hot gasses to be exhausted only through the first set of ports, which provides a greater heat exchange path.
    Type: Grant
    Filed: September 10, 1997
    Date of Patent: October 19, 1999
    Assignee: Hussong Manufacturing Co., Inc.
    Inventor: Dudley D. Hussong
  • Patent number: 5964212
    Abstract: A barbecue rotisserie apparatus comprising a conventional barbecue apparatus and a novel rotisserie apparatus. The rotisserie apparatus comprises a ring having a substantially U-shaped cross section, rollers that are rotatably secured within their axis of rotation within the ring U cross section, and a drive apparatus secured to the barbecue for rolling the ring around the bowl of the barbecue apparatus. A bracket means on the ring supports the grill. The drive apparatus comprises a motor, friction wheel, and rigid enclosure.
    Type: Grant
    Filed: March 25, 1999
    Date of Patent: October 12, 1999
    Inventor: Edward P. Thompson
  • Patent number: 5954986
    Abstract: A heating apparatus includes a central support axle positioned within a heating chamber of the heating apparatus. The heating apparatus provides both hot-air heating and micro-wave heating. A turntable has a central portion supported by the central support axle so that the turntable is rotated around the central support axle. A driving source is positioned at an upper side of the heating chamber for generating a rotating torque, and a connecting shaft for transmitting the rotating torque generated by the driving source to the turntable is provided in the heating chamber. The turntable has an entirely flat shaped section including a plane on which food products to be heated are mounted. A central portion of the flat shaped section is defined at a concave which is downwardly recessed into the plane and arranged to be fixed to and supported by the central support axis.
    Type: Grant
    Filed: January 29, 1998
    Date of Patent: September 21, 1999
    Assignee: Fujimak Corporation
    Inventors: Hideki Tsukamoto, Akio Ueoka, Hiroshi Matsuo
  • Patent number: 5908576
    Abstract: An insert for an oven, such as a microwave oven, includes an adapting mechanism compatible with a drive mechanism of the oven, a food treatment element, and at least one drive shaft coupled between the food treatment element and the adapting mechanism. The insert converts rotational forces conventionally used for driving a turntable into forces for driving a food treatment element, such as a rotisserie element.
    Type: Grant
    Filed: October 16, 1997
    Date of Patent: June 1, 1999
    Inventor: Jeffrey D. Henning
  • Patent number: 5796082
    Abstract: A microwave oven includes a cooking chamber in which a plurality of removable horizontal partition plates are mounted to divide the cooking chamber into vertically adjacent compartments. A tray is rotatably mounted on each partition plate. A drive shaft carries vertically spaced drive elements, such as friction wheels or gears, which are engageable with respective trays. An electric motor drives the drive shaft to rotate the trays. The trays become disengaged from the drive elements in response to being removed from the cooking chamber. An additional driven tray is mounted on a floor of the cooking chamber.
    Type: Grant
    Filed: October 7, 1996
    Date of Patent: August 18, 1998
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Je Myung Kim
  • Patent number: 5726428
    Abstract: A freestanding shelving unit for supporting a first and second foodstuff within a microwave oven having an internal oven compartment with a support surface. The unit includes a generally planar, lower base member and a generally planar, upper platform member. The base member has a top surface for receiving the first foodstuff, a bottom surface receivable on the support surface of the oven compartment, and an outer periphery defining a proximal and a distal edge. The upper platform member has a top surface for receiving the second foodstuff, a bottom surface, and an outer periphery defining a proximal and a distal edge. A yoking portion is provided to extend from a first end supported at the proximal edge of the base member to a second end supporting the upper platform member at its proximal edge a spaced-apart distance from the base member. The upper platform member extends freely from the yoking portion at least partially over the base member.
    Type: Grant
    Filed: March 13, 1995
    Date of Patent: March 10, 1998
    Inventor: Michael D. Christensen
  • Patent number: 5643486
    Abstract: The oven comprises a housing (1) enclosing an open cavity (4) which is closed by a door (6) pivotally mounted about a horizontal shaft (8) placed in the housing. The cavity includes a food-carrying tray (5) horizontally translatable via at least one motion transfer mechanism (10) controlled by the door. The motion transfer mechanism (10) includes several transmission stages, each consisting of a notched belt (12;23) meshing with two toothed wheels (13, 19; 26, 28) set respectively on two horizontal shafts, the shaft of one of the two wheels of the stage level being comprised of the pivoting shaft (8) of the door, and the shaft of one of the two wheels of the last stage extending into the cavity (4) and bearing another toothed wheel (35) that meshes with teeth on a lower edge (5a) of the food-carrying tray (5). The invention relates for instance to microwave ovens.
    Type: Grant
    Filed: October 26, 1995
    Date of Patent: July 1, 1997
    Assignee: Moulinex S.A.
    Inventors: Jean-Claude Aurensan, Michel Guy De Matteis, Eric Leparfait
  • Patent number: 5440105
    Abstract: A cooking vessel placed in a desired orientation on a turntable on an oven is automatically returned to that desired orientation at the end of a cooking operation. A sensor on the floor of the cooking chamber senses the movement of support rollers of the turntable to determine the angle by which the turntable must be rotated at the end of the cooking operation to bring the cooking vessel back to the desired orientation.
    Type: Grant
    Filed: September 1, 1994
    Date of Patent: August 8, 1995
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Kyung D. Kim
  • Patent number: 5192842
    Abstract: A microwave oven has a tray in its cooking chamber, the tray having an upwardly facing surface for supporting food. A driving mechanism rotates the tray about an upright axis while displacing the tray up and down. The tray may be disposed horizontally or at an angle to horizontal, as it rotates.
    Type: Grant
    Filed: May 16, 1991
    Date of Patent: March 9, 1993
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Yung H. Kim
  • Patent number: 5059755
    Abstract: A rotatable platform having a relatively circular turntable top rotationally supported above a unitary base by a plurality of wheels which make tangential point contact with the underside of the turntable top. The base includes a raised rim portion that carries the rotationally mounted wheels. A step is formed between the raised rim portion and the remainder of the base that helps prevent food particles from contacting a gear train assembly contained within the base. A flat spiral spring is housed beneath the gear train assembly and cooperates with the gear train assembly to rotate the turntable top. A detent is provided on the base that engages an escapement blade for stopping rotation of the turntable top. The base is substantially square with rounded corners.
    Type: Grant
    Filed: July 23, 1990
    Date of Patent: October 22, 1991
    Assignee: G & S Metal Products Company, Inc.
    Inventors: John R. Nottingham, John W. Spirk, Jeffrey M. Kalman
  • Patent number: 5034587
    Abstract: An improved apparatus for heating and cooking foods includes an oven frame having an interior formed as an oven chamber, a turntable turnably supported on the bottom of the oven chamber, a plurality of rollers rotatably disposed between the turn dish and the outer peripheral region of a bottom plate, and a mechanism which projects downward from the bottom of the turntable which prevents the turntable from sliding on a table surface. The rollers are rotatably received in an annular groove located around the outer peripheral region of the turntable. The mechanism for preventing sliding of the turntable is that of an annular trough having a V-shaped sectional shape. The lowermost part of the annular trough is located lower than the rolling surface for the rollers. In a second embodiment the mechanism for preventing sliding of the turntable is a plurality of downward projections formed around a single circle in an equally spaced relationship.
    Type: Grant
    Filed: June 26, 1990
    Date of Patent: July 23, 1991
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Minoru Takagi
  • Patent number: 4985607
    Abstract: A high frequency heating apparatus comprises a heating chamber (28), a metal skewer (5), a rotary driving portion (F) and a coupling (13). The heating chamber (28) comprises a high frequency generator (3) and a heater (2) for heating foods (26) contained therein. The metal skewer (5) supports the skewered food (26) and is rotatably suspended between both sidewalls (28b, 28c) of the heating chamber (28). The rotary driving portion (F) is provided for rotating the metal skewer (5) in the heating chamber (28). One end portion (5a) of the metal skewer (5) is coupled with the rotary driving portion (F) by the coupling (13). The coupling (13) is provided on the outside of one sidewall (28c) of the heating chamber (28). A support member (G) is provided at the position opposed to the coupling (13) for rotatably supporting the other end portion of the metal skewer (5). The support member (G) is detachably provided projecting from the other sidewall (28b) of the heating chamber (28).
    Type: Grant
    Filed: September 30, 1988
    Date of Patent: January 15, 1991
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Yuichiro Oya
  • Patent number: 4939333
    Abstract: Disclosed is an electric apparatus comprising a housing with a door, a turntable arranged in the housing for rotating an object, a synchronous motor for driving the turntable, and a control portion for controllling the driving of the synchronous motor, the control portion having apparatus for storing the time required for the turntable to rotate once, apparatus for determining whether or not a time period which is approximately a natural number multiple of the time required for the turntable to rotate once, has elapsed since initiation of turntable rotation, and apparatus for stopping an operation for the rotation of the turntable on the basis of the determination that time, which is approximately a natural number multiple of the time required for one rotation of the turntable, has elapsed.
    Type: Grant
    Filed: September 15, 1989
    Date of Patent: July 3, 1990
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Haruo Sakai, Masayuki Sakai, Satoshi Koide
  • Patent number: 4918275
    Abstract: A turntable for an electronic range comprises: a tray-supporting element which is provided with a plurality of arms radially arranged and having rollers at end portions thereof, a substantially triangular concave portion at its lower surface, and a through-hole at its central portion; and a coupling unit which is provided with a boss portion received in the through-hole of the tray-supporting element, a substantially triangular flange portion engaged with the concave portion of the tray-supporting element, and a shaft receiving sleeve for receiving a driving shaft of an electric motor, which shaft receiving sleeve is integrally formed in a lower portion of the coupling unit.
    Type: Grant
    Filed: February 21, 1989
    Date of Patent: April 17, 1990
    Assignee: Imanashi Kinzoku Kogyo Kabushiki Kaisha
    Inventors: Kenzo Okamoto, Fumihiko Kitada
  • Patent number: 4870237
    Abstract: A microwave oven of a type equipped with a turntable inside its heating chamber has indented parts formed on the walls of the heating chamber. A rack is supported over the turntable by supporting members which are attached to these indented parts. Each supporting member has a part which is rotatable around a horizontal axis such that it can be unfolded to protrude into the chamber or folded inside the indented part without protruding into the chamber.
    Type: Grant
    Filed: January 24, 1989
    Date of Patent: September 26, 1989
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Shigeaki Fukumoto
  • Patent number: 4788397
    Abstract: Portable turntable and drive motor assembly for use in microwave ovens. The drive motor assembly is positioned to one side of the turntable platform and has a low profile so that it will not interfere with the rotation of overhanging objects on the platform. In the principal embodiment disclosed, the drive motor is spring powered.
    Type: Grant
    Filed: January 13, 1987
    Date of Patent: November 29, 1988
    Assignee: Plastics, Inc.
    Inventor: Allen M. Danley
  • Patent number: 4754111
    Abstract: Turntable for rotating food being cooked in a microwave oven, including a rotatable platform upon which the food is mounted and a drive motor positioned to the side of the platform. The turntable is made of a material having a low loss tangent at microwave frequencies, and the drive motor is surrounded by a shielding enclosure which reflects microwaves. In one of the disclosed embodiments, the turntable can also be used in conventional ovens.
    Type: Grant
    Filed: September 4, 1981
    Date of Patent: June 28, 1988
    Assignee: Plastics, Inc.
    Inventors: James F. Pomeroy, Albert E. Colato, Allen M. Danley, John E. Gerling
  • Patent number: 4752662
    Abstract: A turntable driving system of a microwave oven comprises a turntable driving motor mounted in the microwave oven body, a turntable roller unit driven by the turntable driving motor to rotate a turntable, and a coupling for transmitting the output from the turntable driving motor to the turntable roller unit. The turntable roller unit comprises at least three rollers which are placed between the turntable and the oven chamber inner bottom wall at positions near the turntable peripheral edge so as to support the turntable virtually horizontally, wire metal rods in the same quantity as the rollers, extending radially from the position corresponding to the turntable bottom center toward the turntable peripheral edge and rotatably supporting the rollers, and a concaved cap mounted in the radial center of the metal rods so as to cover the coupling from the upper side for engagement with the circumferential wall of the coupling.
    Type: Grant
    Filed: March 4, 1987
    Date of Patent: June 21, 1988
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Yutaka Takagi
  • Patent number: 4746781
    Abstract: A device for rotating food while cooked in a microwave oven includes a metal housing supported above the oven floor by dielectric feet, and a turntable mounted above the housing. The turntable is rotatable by virtue of a turntable shaft having downwardly extended legs forming a non-circular cross-section, insertable into a similarly configured bore within a drive shaft inside the housing. A detent, pivotally mounted beneath the housing, can be pivoted manually to a locking position in which an arm of the detent engages one of several notches formed in the turntable, to prevent further turntable rotation relative to the housing. A bearing assembly between the top of the housing and the turntable includes an annular frame, and a plurality of ball bearing-containing receptacles arranged symmetrically about the frame.
    Type: Grant
    Filed: July 1, 1987
    Date of Patent: May 24, 1988
    Assignee: Northland Aluminum Products, Inc.
    Inventors: H. David Dalquist, III, Lloyd G. Keleny, Jorgen A. Jorgensen, Douglas J. Kluge
  • Patent number: 4743727
    Abstract: A turntable drive unit of a microwave oven which comprises a spring box disposed below floor of the cooking chamber in the microwave oven, the spring box containing a shape memory alloy plate spring disposed therein, an axle mounted to the spring box through one end thereof and the other end thereof mounted to a food platform, and a shape memory alloy coil spring disposed in the spring box, one end of the coil spring connected to an air control plate disposed in the spring box whereby the food plateform can be automatically rotated by varying the temperature in the cooking chamber in the microwave oven and varying the temperature in the spring box.
    Type: Grant
    Filed: April 14, 1987
    Date of Patent: May 10, 1988
    Assignee: Goldstar Co., Ltd.
    Inventor: Whang Joon-Yoen
  • Patent number: 4713513
    Abstract: A shelf structure is provided for use with a turntable in a microwave oven. The shelf structure includes a food-supporting platform and a base which rests on the table of the turntable. A first food product is placed on the turntable, and a second food product is placed on the platform above the first. When microwave energy is introduced toward the top of the oven cavity, the food product on the platform is exposed to more of the energy than is the food product on the turntable, and therefore tends to cook at a faster rate.
    Type: Grant
    Filed: June 2, 1986
    Date of Patent: December 15, 1987
    Assignee: Plastics, Inc.
    Inventor: Albert E. Colato
  • Patent number: 4694132
    Abstract: A microwave oven turntable having a removable table top driver at various points about its circumference. The turntable includes a base having a flat bottom and an upwardly extending cylindrical side wall. A central drive shaft is rotatably mounted to the base bottom to form a vertical axis of rotation. A spring provides rotational energy to the drive shaft. A dependent gear is coaxially mounted to the drive shaft and the dependent gear meshes with a gear train that governs the rate of drive shaft rotation so as to ensure a relatively constant rotational speed. The spring and gears are encased by a circular base cover member having a center aperture through which a portion of the drive shaft projects. A spider drive member is attached to the portion of the drive shaft projecting through the base cover member for rotation therewith. The spider drive member rests on a retainer ring having spherical balls and is additionally supported by freely rotatable wheels.
    Type: Grant
    Filed: October 22, 1986
    Date of Patent: September 15, 1987
    Inventor: Yiu C. Liu
  • Patent number: 4649897
    Abstract: A vaporizer-burner using liquid fuel such as oil, in which the oil conducted to the combustion chamber is vaporized before being ignited and in which the air required for combustion has been conducted to the combustion chamber along a separate duct. The problem in this type of vaporizer-burners of prior art is the continuous vacuum prevailing in the combustion chamber during operation, which renders the flame unstable and sensitive to changes in ambient conditions, such as wind squalls. With the vaporizer-burner of the invention, the problem has been solved in that the air supply duct has been divided into two parts, one directing air to the oil vaporizing process and the other to the combustion process, and that the supply proportion of said so-called primary and secondary airs can be adjusted with the aid of a turnable flap placed in the duct.
    Type: Grant
    Filed: November 12, 1985
    Date of Patent: March 17, 1987
    Assignee: Scan-Development KY
    Inventor: Heinz Ekman
  • Patent number: 4647745
    Abstract: Portable turntable and drive motor assembly for use in microwave ovens. The drive motor assembly is positioned to one side of the turntable platform and has a low profile so that it will not interfere with the rotation of overhanging objects on the platform. In the principal embodiment disclosed, the drive motor is spring powered.
    Type: Grant
    Filed: November 22, 1985
    Date of Patent: March 3, 1987
    Assignee: Plastics, Inc.
    Inventor: Allen M. Danley
  • Patent number: 4636605
    Abstract: A turntable for microwave oven is disclosed, comprising a base (4), having a platform (2) rotatively mounted thereto. A motor assembly (6) is mounted to an underside of the platform (2) and engages with a gear ring (28) in the base (4), whereby turning the platform (2). The motor assembly (6) has a metallic casing (126, 128) and serves as a secondary mode stirrer. A speed reduction assembly (8) is further provided, mounted to the underside of the platform (2).
    Type: Grant
    Filed: July 17, 1985
    Date of Patent: January 13, 1987
    Assignee: Rubbermaid Incorporated
    Inventors: Peter M. Berend, Richard D. Dilyard, William A. Pesa, Howard J. Vaeth
  • Patent number: 4598635
    Abstract: A revolving motor-driven turntable for a saucepan which automatically moves and mixes liquid food being cooked over a gas burner. The motion imparted to the food by the revolution of the saucepan eliminates the need of stirring.
    Type: Grant
    Filed: June 3, 1985
    Date of Patent: July 8, 1986
    Inventor: John E. Clegg
  • Patent number: 4590351
    Abstract: Compact turntable for use in microwave ovens. The drive motor assembly is positioned entirely beneath the rotating platform having a ring of inwardly facing gear teeth and has a relatively low profile. This turntable can be utilized in smaller oven cavities than bulkier turntables heretofore provided.
    Type: Grant
    Filed: March 22, 1985
    Date of Patent: May 20, 1986
    Assignee: Plastics, Inc.
    Inventors: James F. Pomroy, Allen M. Danley