US3848105A - Cooking time adjusting arrangement for use in electronic oven - Google Patents

Cooking time adjusting arrangement for use in electronic oven Download PDF

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Publication number
US3848105A
US3848105A US00346795A US34679573A US3848105A US 3848105 A US3848105 A US 3848105A US 00346795 A US00346795 A US 00346795A US 34679573 A US34679573 A US 34679573A US 3848105 A US3848105 A US 3848105A
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Prior art keywords
cooking time
drum
time adjusting
adjusting arrangement
drive wheel
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Expired - Lifetime
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US00346795A
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English (en)
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F Mori
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/66—Circuits
    • H05B6/666—Safety circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/082—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C23/00—Clocks with attached or built-in means operating any device at preselected times or after preselected time-intervals
    • G04C23/14—Mechanisms continuously running to relate the operation(s) to the time of day
    • G04C23/16—Mechanisms continuously running to relate the operation(s) to the time of day acting only at one preselected time or during one adjustable time interval
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F3/00—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/6426—Aspects relating to the exterior of the microwave heating apparatus, e.g. metal casing, power cord
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/6435—Aspects relating to the user interface of the microwave heating apparatus
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/76—Prevention of microwave leakage, e.g. door sealings
    • H05B6/766—Microwave radiation screens for windows

Definitions

  • ABSTRACT A cooking time adjusting arrangement for use in an electronic oven is disclosed.
  • the arrangement includes a display device representing a plurality of data such as various menus, the number and/or quantity of each of the menus with or without cooking times, setting of a timer device to operate the electronic oven for a predetermined cooking time proper to a selected one of the menus being performed with reference to the reading of the display device.
  • the cooking time adjustment arrangement is intended for facilitating the use of the electronic oven without substantially requiring any experience in handling the oven itself.
  • FIG. 1a PATENTEBRWZIW 3.848.105 SHEET'O9UF13
  • FIG 28 (b) 1; COOKING TIME ADJUSTING ARRANGEMENT FOR USE IN ELECTRONIC OVEN The present invention generally relates to an electronic or microwave oven and, more particularly to a cooking time adjusting arrangement for use in the electronic oven.
  • An electronic oven to which the present invention pertains and which is now in wide use essentially comprises an oven-defining structure having a hingedly supported door adapted to close an access opening formed at one side of the oven-defining structure, a magnetron for generating high frequency energy for heat-treating food material within the oven-defining structure, and a timer unit for adjusting the period of time during which the magnetron is operated so as to apply the high frequency energy to one particular food material.
  • food items can be heat-treated or cooked in an extraordinarily short period of time, for example, on the order of seconds, and, in view of the relatively high speed of cooking, the timer unit plays an important role in determining the cooking time, i.e., the period of time during which the magnetron is operated.
  • the timer unit heretofore largely employed in the conventional electronic oven includes an operating shaft, an operating knob having a pointer needle and a calibrated scale imprinted, or otherwise embossed, with a'plurality of sequential digits representing the cooking time.
  • the operating knob is rigidly mounted on the operating shaft for transmitting a rotational force of the operating knob to said operating shaft thereby to operate the timer unit in accordance with the reading of the pointer needle then registered with any one of the digits on the calibrated scale.
  • the cooking book may be a reliable friend to the user, but it will be difficult, or inconvenient if not difficult, to find which book discloses a menu the user intends to serve and where such menu is described in the same book.
  • Some types of conventional electronic ovens are imprinted with a plurality of different menus that can be cooked in different cooking times.
  • the number of the menus that can be imprinted in the vicinity of the timer unit is limited because of a limited space available for this purpose.
  • an essential object of the present invention is to provide a cooking time adjusting arrangement for use in the electronic oven wherein a display device is provided for permitting the user to set the timer unit with reference to the display device.
  • Another object of the present invention is to provide a cooking time adjusting arrangement of the type above referred to, wherein a lighting device is further provided for illuminating the display device.
  • a further object of the present invention is to provide a cooking time adjusting arrangement of the type above referred to, which can be manufactured at a relatively low cost into a single unit substantially independent of the body of an electronic oven to which the concept of the present invention can be applicable.
  • a still further object of the present invention is to' provide a cooking time adjusting arrangement of the type above referred to, which can be mounted on any of the commercially available electronic ovens merely by replacing the front instrument panel with that according to the present invention.
  • a still further object of the present invention is to provide a cooking time adjusting arrangement of the type above referred to, which enables a beginner of to readily handle the electronic oven while preventing the novice from over or undercooking a desired food item.
  • a still further object of the present invention is to provide a cooking time adjusting arrangement of the type above referred to, wherein cooking by the use of an electronic oven can be performed by merely requiring the user to refer to the reading on the display device.
  • FIG. 1 is a schematic perspective view showing an electronic oven, with a back covering removed away, according to one preferred embodiment of the present invention
  • FIG. 2 is a schematic perspective view of a cooking time adjusting arrangement of FIG. 1, shown on an enlarged scale,
  • FIG. 3 is a front elevational view, on an enlarged scale, of the cooking time adjusting arrangement of FIG. 2, with a front covering removed away,
  • FIG. 4(a) is a schematic perspective view of an essential portion of the arrangement of FIG. 2, showing the details of a drum mounting,
  • FIG. 4(b) is an exploded view of a portion of FIG.
  • FIG. 5(a and (b) illustrate a method of connecting the opposite ends of a cable employed in the arrangement of FIG. 2,
  • FIG. 6 is a perspective view, on an enlarged scale, of a pointer needle connected to the cable
  • FIG. 7 is a front elevational view of a drive wheel mounted on the timer operating shaft for moving the cable
  • FIG. 8 is a side view of FIG. 7,
  • FIG. 9(a) is a perspective view of the drive wheel
  • FIG. 9(b) is a perspective view, on an enlarged scale, of a half portion of the drive wheel shown in FIG. 9(a), showing the cross-sectional appearance thereof,
  • FIG. 10(a) is a front elevational view, on an enlarged scale, of the drive wheel, showing one surface thereof,
  • FIG. 10(b) is a top plan view of FIG. 10(a)
  • FIG. 10(0) is a similar view to FIG. 10(0), showing the opposite surface thereof,
  • FIG. 11 is a perspective view of one end of the drum according to another embodiment of the present invention.
  • FIG. 12 is a perspective view of the opposite end of the drum according to a further embodiment of the present invention, I
  • FIG. 13 is a perspective view of the arrangement incorporating a drum lighting unit according to a still further embodiment of the present invention.
  • FIG. 14(a) is a modification of FIG. 13,
  • FIG. 14(b) shows a manner of light transmission through the drum in the modification of FIG. 14(a),
  • FIG. 15(a) is another modification of FIG. 13,
  • FIG. 15(b) shows a manner of light transmission through the drum in the another modification of FIG.
  • FIG. 16(a) is a further modification of FIG. 13,
  • FIG. 16(b) shows a manner of light transmission through the drum in the further modification of FIG. 16(a),
  • FIG. 17 is a schematic perspective view of the electronic oven having a pocket for accommodating a plurality of menu cards according to a still further embodiment of the present invention.
  • FIG. 18 is a back plane view, on an enlarged scale, of the pocket showing the interior thereof,
  • FIG. 19 is a cross sectional view of an essential portion of FIG. 18,
  • FIG. 20 is a schematic perspective view of FIG. 18, with the menu cards removed away,
  • FIG. 21 is a front elevational view of a portion of a v mounting panel to which the pocket is attached
  • FIG. 22(a) is a schematic perspective view of the electronic oven having the display device composed of an interchangeable strip member according to a still further embodiment of the present invention
  • FIG. 22(b) is a schematic perspective view, on an enlarged scale, of an essential portion of FIG. 22(a) showing a manner of association between the pointer needle and the interchangeable strip member,
  • FIG. 22(c) is a schematic diagram showing the details of the strip member
  • FIG. 23(0) is a similar view to FIG. 2, showing a still further embodiment of the present invention.
  • FIG. 23(b) is a front elevational view of the embodiment of FIG. 23(a), with the front covering removed away,
  • FIG. 24 is a schematic perspective view of an essen tial portion of FIG. 23(b), with a portion broken away to show the interior thereof,
  • FIG. 25 is a schematic perspective view, on an enlarged scale, with a portion broken away to show the application of the lighting unit to the embodiment of FIG. 23(a),
  • FIG. 26 is a schematic perspective view of a band of film having a protective covering according to a still further embodiment of the present invention.
  • FIG. 27 is a schematic perspective view, on an enlarged scale, showing an operative connection between the timer operating shaft and a film winding mechanism employed in the embodiment of FIG. 23(a),
  • FIG. 28(a) is a schematic perspective view of a portion of the electronic oven utilizing an interchangeable strip member having a magnetic member according to a still further embodiment of the present invention.
  • FIG. 28(h) is a schematic side sectional view showing the fitting position for the strip member having the magnetic member.
  • the electronic oven to which the present invention is applicable comprises an oven-defining structure 1 of substantially cubic shape having a hingedly supported door la adapted to close an access opening through which food to be heattreated is inserted into the oven-defining structure 1.
  • An instrument panel 2 is provided above the door la and suitably supported in position by a framework, for example, a housing structure (not shown) for confining the oven-defining structure 1 therein.
  • This instrument panel 2 is formed with a display window 5 through which a portion of a rotatable drum 3 having a plurality of menus imprinted on the peripheral surface thereof and a pointer needle 4 are exposed to the sight of the user and also with a substantially vertically extending slot 9 through which a portion of a drum rotating ring 10 for rotating the drum 3 is exposed for permitting the user to rotate the drum 3 to register one particular menu on the peripheral surface of the drum 3 with the pointer needle 4.
  • a timer operating knob 7 mounted on a timer operating shaft 18 (FIG. 3) loosely extending through the instrument panel 2, and a push-button type switch 8 operable so as to, upon closure thereof, initiate radiation of high frequency energy at the food within the oven-defining structure 1.
  • a timer device 6 is constructed to be driven in synchronism with the radiation of high frequency energy, i.e., closure of the push-button type switch 8, and to interrupt an electric power supply to the magnetron (not shown) after a predetermined period of time set by the timer device 6 and has elapsed.
  • the pointer needle 4 during the operation of the timer device 6, moves from one position corresponding to the cooking time proper to one particular food in the oven-defining structure 1 to another position, i.e., OFF position, thereby visually representing the elapse of the cooking time.
  • the pointer needle 4 is operatively coupled with the timer operating shaft 18 in a manner as will be described later.
  • the user if the user desires to set the timer device 6 so as to operate the electronic oven for a certain period of time required for cooking or heat-treating one particular food item within the oven-defining structure 1, the user merely turns the timer operating knob 7 to such a position that the movable pointer needle 4 is aligned with a marking indicative of that certain period of time which is imprinted, or otherwise embossed, on the peripheral surface of the drum 3 while viewing it through the display window 5. Subsequently, the switch 8 is depressed to supply the electric power to the magnetron. The timer device 6 is driven during this predetermined period of time and, upon the lapse of the predetermined period of time, it halt operation with the pointer needle 4 returned to the OFF position.
  • the rotary drum 3 has a pair of opposed ends integrally formed with axial projections 12 and 14 in alignment with the longitudinal axis of said drum 3, respectively.
  • Mounted on these axial projections 12 and 14 and rigidly secured to the drum 3 is the drum operating ring and another ring 11 of smaller diameter than that of the ring 10.
  • the drum 3 is rotatably supported in position by a chassis 21 through a pair of bearing blocks 13a and 13b rigidly secured to said chassis 21 and respectively receiving therein the axial projections 12 and 14 of the drum 3.
  • the drum 3 is normally biased in one direction towards the bearing block 13a by a compression spring 15 which is mounted on the axial projection 14 and interposed between said ring 11 and said bearing block 13b, thereby to impart a sufficient friction to the rotation of the drum 3.
  • a washer 16 of sufficient size is provided between the bearing block 13b and the compression spring 15 for facilitating a smooth rotation of the drum 3, thereby to avoid a possibility that the corresponding end extremity of the compression spring 15 may be caught by a portion of the bearing block 13b.
  • the drum 3 is imprinted on its peripheral surface with a time scale under the heading of TIME in addition to various markings indicative of, for example, menus and the number of a particular food item under the same menu while, in the instance shown in FIG. 4(a), a separate time scale 17 is used and horizontally suspended from the chassis 21.
  • the timer operating shaft 18 has a drive wheel 19 non-rotatably mounted thereon in a manner as will be described later, rotation of the timer operating shaft 18 being transmitted to the pointer needle 4 through said drive wheel 19 by means of a cable 20.
  • a plurality of idle pulleys 22, 23, 24, and 26 are rotatably supported by the chassis 21 for guiding the cable 20.
  • the cable 20 has a pair of opposed ends connected with each other by a tension spring 27 and suspended around the pulleys and the drive wheel in the order of 25, 24, 23, 22, 19 and 26.
  • the cable 20 runs with the tension spring 27 moving between two positions respectively locating adjacent to the ends of the rotary drum 3.
  • the chassis 21 is formed as at 28 and 29 with a pair of downward projections each terminating at a position adjacent to the linear path of travel of the tension spring 27. These downward projections 28 and 29'are provided for facilitating a procedure of suspending the cable 20 around the pulleys 22 to 26 via the drive wheel 19, which will be hereinafter described with reference to FIGS. 5(a) and (b).
  • the cable 20 has each end tied to provide a loop and 31 of a size sufficient enough to permit the corresponding projection 28 and 29 to extend therethrough as shown in FIG. 5(a) during the cable suspending procedure.
  • the space between these projections 28 and 29 is greater than the length of the tension spring 27 without being loaded and substantially equal to the length of the tension spring 27 loaded so as to exert on the cable 20 a sufficient tension to ensure a stable movement of the pointer needle 4 connected with the cable 20 in a manner as will be described later.
  • FIG. 6 illustrates a manner of connection of the movable pointer needle 4 to the cable 20.
  • the chassis 21 is mounted with a guide rail 34 of substantially channelshaped cross section, which extends horizontally between the pulleys 23 and 24.
  • This guide rail 34 carries thereon a block 32 slidable along said guide rail 34 and to which the pointer needle 4 is secured.
  • the block 32 is rigidly mounted with a fitting plate 33 which is in turn connected with the cable 20 as clearly shown in FIG. 6, in such a manner that the block 32 can be pressed towards the guide rail 34 by the tension exerted by the cable 20 thereby to ensure a stable movement of the pointer needle 4.
  • the size of the fitting plate 33 is greater than that of the block 32 so that the pressing force transmitted from the cable 20 to the block 32 can be uniformly distributed to said block 32 to ensure a more stable movement of the pointer needle 4 without causing the latter to incline during the movement.
  • FIGS. 7 to 10 illustrate the details of the drive wheel 19 and a manner of connection of the cable 20 to said drive wheel 19.
  • the drive wheel 19 mounted on the timer operating shaft 18 is so positioned that a portion of the cable 20 between the pulleys 22 and 26 after having passed round the drive wheel 19 extends in alignment with the tangential direction of the drive wheel 19.
  • This arrangement is advantageous in that no substantial force derived from the tension imposed on the cable 20 by means of the tension spring 27 is transmitted through the drive wheel 19 to the timer operating shaft 18, which may otherwise act on the shaft 18 in the direction perpendicular to the longitudinal axis of said shaft 18 if such force were applied to the drive wheel 19. Consequently, it is clear that the timer operating shaft 18 can be smoothly rotated, without requiring an excessive force to rotate the knob 7 and without reducing the life of the timer device 6.
  • the pulleys 22 and 26 respectively positioned substantially above and blow the drive wheel 19 are displaced in the opposite directions from the plane of the drive wheel 19. This is achieved by displacing the planes of flanges 21a and 21b formed integrally with the chassis 21 and to which the pulleys 22 and 26 are rotatably fitted. While the pulleys 22 and 26 are displaced from the plane of the drive wheel 19 as hereinbefore described, the width of a guide groove formed along the periphery of said drive wheel 19 around which the cable 20 is wound is greater than the difference between the level of the plane of the flange 21a and that of the flange 21b.
  • the width of the peripheral groove on the drive wheel 19 should be determined depending upon the number of winding of the cable 20 around said wheel 19 in such a way that windings of the cable 20 aound the wheel 19 do not overlap with respect to each other within the peripheral guide groove.
  • FIGS. 9 and 10 in which the details of the drive wheel 19 are shown, it should be understood that the drive wheel 19 must be firmly mounted on the timer operating shaft 18 partly because, once it has been mounted on said shaft 18, there is no possibility of removing it from the shaft 18 and partly because, even if the drive wheel 19 is arbitrarily rotated in response to the rotation of the timer operating shaft 18, a notch 35 formed thereon should return to a predetermined position upon completion of the operation of the timer device 6. To this end, while the shaft 18 is provided with a pin 36 (FIG.
  • the drive wheel 19 is provided, on the surface facing towards the timer device 6, with a substantially rectangular hollow projection 37 having the interior wall formed with two pairs of protuberances 38 and 39 on both sides of the central hole of the drive wheel 19 through which the shaft 18 extends, each pair of protuberances facing towards each other.
  • the space between the each pair of protuberances 38 and 39 is smaller than the diameter of the pin 36 whereby, when the drive wheel 19 is mounted on the shaft 18, the protuberances 38 and 39 are partially smashed to permit the pin 36 to be firmly sandwiched between the protuberances within the rectangular hollow projection 37.
  • the pin 36 is inserted through the shaft 18 with the longitudinal axis thereof displaced from the longitudinal axis of the operating shaft 18.
  • the protuberances 38 and 39 located on the side in which the pin 36 has become displaced may be partially scraped by a knife of the like to permit the pin 36 to be held in position within the projection 37.
  • the drive wheel 19 is formed on the other surface with a'boss 40 through which the operating shaft 18 extends and also with a hook portion 41 adjacent to the periphery of said wheel 19 to which that portion of the cable wound around said wheel 19 is engaged as shown in FIG. 7.
  • the drive wheel 19 is also formed with the notch 35 substantially opposed to the hook portion 41 and a pair of projections 42 on both sides of said notch 35 which are projecting towards the instrument panel 2 from the plane of the wheel 19.
  • These projections 42 are integrally formed with the drive wheel 19 by means of a plastic molding method during manufacture thereof and are provided for the purpose of permitting the attendant worker to successfully wind the cable 20 around the wheel 19 without causing the cable to be displaced from said wheel 19 in such a manner as indicated by the dotted lines in FIG. 10(1)). To this end, the space m between these projections 42 is made smaller than the space indicated by m in FIG. 10(1)).
  • FIG. 11 Another embodiment shown in FIG. 11 is similar to the foregoing embodiment. However, rotation of the timer operating shaft 18 is, according to the embodiment of FIG. 11 transmitted not only to the movable pointer needle 4, but also to the drum 3 which has been described as manually rotatable in the foregoing embodiment.
  • the projection 12 of the drum 3, in this embodiment of FIG. 11, extends through the bearing block 13a and is mounted rigidly with a pulley 44 around which a portion of the cable 20 between the pulleys 24 and 25 is wound so that the movement of the cable 20 causes the drum 3 to rotate.
  • This arrangement should be designed such that a substantially 360 rotation of the drum 3 occurs upon rotation of the operating shaft 18 from the OFF position to another position indicative of the maximum cooking time that can be set to the timer device 6.
  • the markings indicative of menus which can be cooked in different times are preferably imprinted on the peripheral surface of the drum 3 so as to helically position thereon as shown in FIG. 11.
  • a system similar to the embodiment of FIG. 11 may be practised in a manner as shown in FIG. 12, wherein the various pulleys, the drive wheel, the pointer needle, the cable and their associated parts that have been described as employed in the foregoing embodiments are eliminated.
  • a bevel gear system is employed.
  • This bevel gear system comprises a first bevel gear 45 rigidly mounted on the operating shaft 18 and a second bevel gear 46 rigidly mounted on the projection 14 of the drum.
  • 3 Projection 14 is made to extends through the bearing block 13b, whereby rotation of the operating shaft 18 can be transmitted to the drum 3through said first gear 45 via said second gear 46 in constant mesh with said first gear 45, thereby causing the drum 3 to rotate about the longitudinal axis thereof.
  • the time scale 17 that has been described as employed in the foregoing embodiments is also omitted and, instead thereof, an index mark 47 is preferably integrally formed with the instrument panel 2 so as to into the window 5 as clearly shown.
  • Each of the foregoing embodiments shown in FIG. 11 I and FIG. 12 has an advantage in that the cooking time required in cooking one particular food item can be set to the timer device 6 merely by rotating the timer operating shaft 18 until the pointer needle 4 in the embodiment of FIG. 11 or the index mark 47 in the embodiment of FIG, 12 is aligned with one of the markings which indicate the desired food item to be cooked.
  • FIGS. 13 to 16 show various types of a lighting device which are applicable with any of the foregoing embodiments of the present invention for illuminating the rotary drum 3.
  • the provision of this lighting device is advantageous since this ensures that, at most, a very small portion of the peripheral surface of the drum 3, on which the various menus and the number and/or quan tity of each of said menus are imprinted or otherwise embossed and which is exposed to the sight of the user through the window 5, will be shaded, which may in fact occur without the lighting device.
  • the drum 3 employed in this instance is preferably made of a light transmissive material, i.e., material of a nature which permits passage of light therethrough, and an elongated, substantially cylindrical lamp 48 is housed within said drum 3 in alignment with the longitudinal axis of said drum 3.
  • a suitable power source not shwon
  • the lamp 48 is inserted in a socket 49, which may be integrally formed with the bearing block 13b and concurrently serves as an axis about which said drum 3 rotates.
  • a pair of lead wires 51 are extended through said bearing block 13b and connected to the lamp 48 through the socket 49. Rotation of the drum 3 incident to a turning of the operating ring does not cause the lead wires 51 to twist about the axis of rotation of the drum 3.
  • the drum 3 is similarly made of a light transmissive material and an electrical lamp 52 is positioned adjacent to the peripheral rim of that end of the drum 3 adjacent to the bearing block 13b so as to illuminate the drum 3.
  • an electrical lamp 52 is positioned adjacent to the peripheral rim of that end of the drum 3 adjacent to the bearing block 13b so as to illuminate the drum 3.
  • rays of light emitted from the electrical lamp 52 travel as shown in FIG. 14(b) with portions of said light rays leaking through the perforated figure or characters on the film 53, thereby permitting the figure or characters to be illuminated.
  • a plurality of electrical lamps 55 are provided substantially above the rotary drum 3 so as to illuminate the portion of the peripheral surface of the drum 3 exposed to the outside through the window 5.
  • These lamps 55 are shielded from view by a removable covering 56 forming a part of the front instrument panel 2.
  • this covering 56 is fitted to the chassis 21 by means of a plurality of screws threaded thereto at 57 and can be removed, if these screws 57 are undone, for replacement of are exhausted lamp with a new one.
  • the rotary drum 3 is substantially encircled by a covering 59 having an opening 59a, said covering 59 being supported by the chassis 21 with said opening 59a in alignment with the window 5.
  • a lamp 58 is secured to said covering 59 at the back of the drum 3 with respect to the opening 59a or the window 5 as clearly shown in FIG. 16(b).
  • the interior surface of said covering 59 is serves as a reflector so that rays of light emitted from the lamp 58 travel, reflected by said interior surface of said covering 59, to the portion of the drum 3 facting towards the window 5 thereby to illuminate that portion of said drum 3.
  • the front instrument panel 2 above the door is detachably provided with a housing 62 for accommodating therein a plurality of cooking cards 60 and at least one casing 61 of a similar size to each of said cards 60 pivotally supported within said housing 62 in such a manner as will be described later.
  • Each of these cooking cards 60 is imprinted on one surface with a plurality of menus and the cooking times respectively corresponding to the menus whereby the user can set the timer device 6 through the timer operating knob 7 while referring to a selected one of said cooking cards 60.
  • the casing 61 is used to accommodate therein a sheet of paper or the like on which the user writes additional menus and the associated cooking times therefor which are not described on any one of the cooking cards 60.
  • Each of these cards 60 and the casing 61 is of a substantially rectangular shape and is manually pivotable between a locked position wherein it is housed within the housing 62 and concealed from view and another upright position wherein it stands upright and is exposed to the sight of the user.
  • a locked position wherein it is housed within the housing 62 and concealed from view
  • another upright position wherein it stands upright and is exposed to the sight of the user.
  • index knobs 60a and 61a are always exposed to the sight of the user even though the card 60 or the casing 61 is in the locked position.
  • FIG. 18 illustrates the interior of the housing 62 after it has been removed from the instrument panel 2.
  • the housing 62 is integrally formed with a substantially cylindrical projection 63 on which the cards 60 and the casing 61 are rotatably mounted.
  • the position of the cylindrical projection 63 with respect to the housing 62 and the hole formed inteach of the cards 60 and the casing 61 for permitting the projection 63 to pass therethrough are to be selected such that a maximum of the surface area of each of the cards 60 or the casing 61 in the upright position can be exposed to the outside of the housing 62.
  • the projection 63 is located at a position adjacent to the upper right corner of the configuration of the housing 62.
  • a stopper 66 integrally formed with the housing 62 for preventing each of the cards 60 and the casing 61 from being excessively rotated beyond the upright position.
  • the feeler 65a of the leaf spring 65 relatively slides along the corner edge of said card 60 or casing 61, biased thereto by its own resiliency, and finally clicks into the recess 64, formed in each of the cards 60 and the casing 61, whereby the card 60 or casing 61 thus raised to the upright position can be held in said upright position with the stopper 66 restricting the further rotation thereof beyond said upright position.
  • the housing 62 with cards 60 and casing 61 therein is detachably fitted to the instrument panel 2 for permitting the user to clean, as desired, the housing 62, the cards 60 and the casing 61.
  • the leaf spring 65 is substantially bogged or hogged at the center, as shown by the dotted line in FIG. 18, of the end portion thereof accommodated in between each of the posts 67 and a corresponding side flange of the housing 62 whereby said leaf spring 65 is firmly held in position within said housing 62 and is not removed therefrom.
  • the cylindrical projection 63 is integrally formed with one or more, for example, four, projections 68, 69, 70 and 71 circumferentially equidistantly spaced with respect to each other and protruding in the direction at right angles to the longitudinal axis of said projection 63.
  • the length of the cylindrical projection 63 is made slightly greater than the sum of thicknesses of the cards 60 and the casing 61.
  • the housing 62 is integrally formed with a plurality of engagements such as indicated by 72, 74, 76 80 for engagement into corresponding openings 73, 75, 77 and 81 formed in the instrument panel 2.
  • One of the engagements, such as indicated by 76 is arrow-headedwhile the cylindrical projection 63 is integrally formed with an arrow-headed engagement 78, both the arrow-headed engagements 76 and 78 serving as hooks and each having a sufficient resiliency as to permit the housing 62 with cards 60 and casing 61 to be, when mounted to the instrument panel 2, firmly carried by said panel 2 in a predetermined position in a manner clearly shown in FIG. 19.
  • FIG. 19 clearly illustrates the condition in which the arrowheaded engagement 78 is held in position within the opening 79.
  • cylindrical projection 63 has a length slightly greater than the sum of thicknesses of the cards 60 and casing 61, a portion of the instrument panel 2 around the opening 79 is recessed to provide a space 790 for accommodating therein the lateral projections 68 to 71 on the free end of the cylindrical projections 63.
  • the depth of the interior of the housing 62 in which the cards 60 and the casing 61 are accommodated in the manner as hereinbefore described is determined depending upon the sum of the thicknesses of the cards 60 and casing 61 and should be selected such as to permit each of said cards 60 and casing 61 to be steadily moved from the locked position to the upright position about the substantially cylindrical projection 63 while backed up by the instrument panel 2 and the housing 62 from both sides thereof.
  • the cylindrical projection 63 is formed with a cut-out portion as shown at 63a adjacent to the root of the arrow-headed engagement 78.
  • the cut-out portion 63a provides a clearance whereby such card and/or casing can be effectively mounted within the housing 62 with the projection 63 extending through said hole.
  • the housing 62 including the various parts integrally formed with said housing 62 is preferably made of synthetic resin in a similar way as employed in manufacture of the instrument panel 2.
  • Removal of the housing 62 with cards 60 and casing 61 therein is not always effected only when cleaning is to be performed. For example, the same may be effected when some of the cards 60 and/or the casing 61 are to be replaced by other cards.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Electric Ovens (AREA)
US00346795A 1972-04-06 1973-04-02 Cooking time adjusting arrangement for use in electronic oven Expired - Lifetime US3848105A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP4111372 1972-04-06
JP4111272 1972-04-06

Related Child Applications (4)

Application Number Title Priority Date Filing Date
US05/461,785 Division US3978306A (en) 1972-04-06 1974-04-17 Cooking time adjusting arrangement for use in electronic oven
US05/461,792 Division US3965324A (en) 1972-04-06 1974-04-17 Cooking time adjusting arrangement for use in electronic oven
US05/461,791 Division US3965322A (en) 1972-04-06 1974-04-17 Cooking time adjusting arrangement for use in electronic oven
US05/595,302 Reissue USRE28888E (en) 1972-04-06 1975-07-11 Cooking time adjusting arrangement for use in electronic oven

Publications (1)

Publication Number Publication Date
US3848105A true US3848105A (en) 1974-11-12

Family

ID=26380660

Family Applications (1)

Application Number Title Priority Date Filing Date
US00346795A Expired - Lifetime US3848105A (en) 1972-04-06 1973-04-02 Cooking time adjusting arrangement for use in electronic oven

Country Status (5)

Country Link
US (1) US3848105A (US08124317-20120228-C00060.png)
CA (1) CA990365A (US08124317-20120228-C00060.png)
FR (1) FR2179187B1 (US08124317-20120228-C00060.png)
GB (1) GB1431305A (US08124317-20120228-C00060.png)
SE (1) SE384962B (US08124317-20120228-C00060.png)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889091A (en) * 1973-02-10 1975-06-10 Tokyo Shibaura Electric Co Electronic oven with a cooking time setting mechanism and a remaining time indication mechanism
US3978305A (en) * 1974-05-20 1976-08-31 Matsushita Electric Industrial Co., Ltd. Microwave oven
US3997752A (en) * 1974-09-26 1976-12-14 Matsushita Electric Industrial Co., Ltd. Cooking time indication arrangement for use in microwave oven
JPS5237343U (US08124317-20120228-C00060.png) * 1975-09-09 1977-03-16
US4028517A (en) * 1974-03-04 1977-06-07 Matsushita Electric Industrial Co., Ltd. Microwave oven
JPS551175U (US08124317-20120228-C00060.png) * 1979-04-10 1980-01-07
US6057533A (en) * 1998-05-13 2000-05-02 Samsung Electronics Co., Ltd. Control panel of a microwave oven having slide type power control knob
US20060059360A1 (en) * 2004-07-01 2006-03-16 Ortkiese Jerry B Authenticating controller
US20130204406A1 (en) * 2010-04-12 2013-08-08 Electrolux Home Products Corporation N.V. Control interface for household appliances

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2450024A1 (fr) * 1979-02-23 1980-09-19 Pruines Iseco De Four a micro-ondes a systeme de pesee incorpore
DE3446195A1 (de) * 1984-12-18 1986-06-26 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Vorrichtung zur einstellung und anzeige von betriebsfunktionen, funktionsablaeufen bzw. einstellwerten
DE3603324A1 (de) * 1986-02-04 1987-08-06 Bosch Siemens Hausgeraete Elektrisches hausgeraet

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2052701A (en) * 1935-07-16 1936-09-01 Gen Electric Dial mechanism
US2876764A (en) * 1955-06-18 1959-03-10 Siemens Reiniger Werke Ag Ultrasonic treatment apparatus
US3324273A (en) * 1964-08-07 1967-06-06 Gen Electric Control and power supply networks for magnetrons

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3008059A (en) * 1958-10-27 1961-11-07 Westinghouse Electric Corp Control for clothes washer or dryer or the like
FR1288784A (fr) * 1961-02-13 1962-03-30 Perfectionnements aux appareils compte-temps
CH373797A (fr) * 1961-06-06 1963-12-15 Frame Sa Dispositif pour la fermeture ou l'ouverture sélective de plusieurs circuits électriques

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2052701A (en) * 1935-07-16 1936-09-01 Gen Electric Dial mechanism
US2876764A (en) * 1955-06-18 1959-03-10 Siemens Reiniger Werke Ag Ultrasonic treatment apparatus
US3324273A (en) * 1964-08-07 1967-06-06 Gen Electric Control and power supply networks for magnetrons

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889091A (en) * 1973-02-10 1975-06-10 Tokyo Shibaura Electric Co Electronic oven with a cooking time setting mechanism and a remaining time indication mechanism
US4028517A (en) * 1974-03-04 1977-06-07 Matsushita Electric Industrial Co., Ltd. Microwave oven
US3978305A (en) * 1974-05-20 1976-08-31 Matsushita Electric Industrial Co., Ltd. Microwave oven
US3997752A (en) * 1974-09-26 1976-12-14 Matsushita Electric Industrial Co., Ltd. Cooking time indication arrangement for use in microwave oven
JPS5237343U (US08124317-20120228-C00060.png) * 1975-09-09 1977-03-16
JPS551175U (US08124317-20120228-C00060.png) * 1979-04-10 1980-01-07
US6057533A (en) * 1998-05-13 2000-05-02 Samsung Electronics Co., Ltd. Control panel of a microwave oven having slide type power control knob
US20060059360A1 (en) * 2004-07-01 2006-03-16 Ortkiese Jerry B Authenticating controller
US20130204406A1 (en) * 2010-04-12 2013-08-08 Electrolux Home Products Corporation N.V. Control interface for household appliances

Also Published As

Publication number Publication date
DE2316695B2 (de) 1975-08-14
FR2179187A1 (US08124317-20120228-C00060.png) 1973-11-16
SE384962B (sv) 1976-05-24
SE7304538L (US08124317-20120228-C00060.png) 1973-10-08
CA990365A (en) 1976-06-01
DE2316695A1 (de) 1973-10-11
GB1431305A (en) 1976-04-07
AU5423873A (en) 1974-10-10
FR2179187B1 (US08124317-20120228-C00060.png) 1977-02-04

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