AU4273678A - A cooking aid using a solid state logic circuit - Google Patents

Description

FORM 4 REGULATION 11(1)

COMMONWEALTH OF AUSTRALIA

THE PATENTS ACT 1952-1969

CONVENTION APPLICATION FOR A PATENT

42736/78 XX/We, CANNON INDUSTRIES LIMITED

SGough Road, of Bilston, West Midlands WV14 8XR, ENGLAND

S hereby apply for the grant of a Patent for an invention entitled: "COOKING ALDS 00 0 0:

which is described in the accompanying complete specification.

This application is a Convention application and is based on the

application(s) numbered: 54152/77

00e

for a patent or similar protection made in Great Britain 7 0*

on '29th December, 1977 0

*/Our address for service is care of GRIFFITH, HASSEL FRAZER,

Patent Attorneys, of 323 Castlereagh Street, Sydney 2000, in the

State of New South Wales, Commonwealth of Australia.

DATED this 19th day of December, '1978

PATENT OFFICE. CANNON INDUSTRIES LIMITED By their Patent Attorneys:

0 DO LLAR S SITY DOLLARS

l f of GRIFFITH, HASSEL FRAZER Fellows, Institute of Patent Attorneys of Australia SCOMMISSIONER OF PATENTS MrMATI.H OE isTtSTLIA. k,

COMMONWEALTH OF AUSTRALIA Patents Act 1952-1962

It DECLARATION IN SUPPORT OF A CONVENTION OR NON-CONVENTION ImsTUUCTIONS APPLICATION FOR A PATENT OR PATENT OF ADDITION Insert No. it available. In support of the application No. mikAs h I Cannon Industries Limited 4 97. Ano it) 3,oert -tite af Iovdation. for a patenti o N--W for an invention entitled

.~~HAROLDVICTOR ALBERTKRB Insert full na(s) of deelarant(s) who moust lic PERSON or PERSONS. NOT a to.rporate body. (See head note). of(e.. The eneral Electric Company Limited, Hirst Research Centre, Wembley, Middlesex H&9 7PP, England, a~dcaatfs.

do solemnly and sincerely declare as follows:- Dteiantireir It pp~cant It corporat. body. Delete entirely it 1. I am authorized by the abovementioned applicant for the patent/p Fx person or persons. XMM to make this declaration on its beh~alf. 2. The basic application (a as defined by Section 141 of the Act was/vin made in the 0 following country X~um~mon the following date(*) by the following applicant(s) namely:- in Great Britain on ~29th December 77h. Delete entirely If Convention priosIW NOT claimed. by Cannon Industries Limited Insert country in wirh first DS51C in hpplicstior. -am 0 f (icIsert date of trint o b.e apptlication,. in &Jonaert full name(s) by

(13 10 elete Ientirely If

t NOT 3. WILLI WARRENI, REGINAID WILLIAMS ad-NIGEL GRAHAM MOORE I) IIsert full laame(e) of %O~sq0^11rws. if *applVfanttsI NOT -1 II II I I ivntor(mi. (Q.;%eert addressses) of re spectSively- 8 Swan .Meadow,... Abbey .Croft, Much Wenloock, la- of astusi I3-ntor(s) If England; 3 Springhill Parks Lower Penn, West Midlands,_Englaz Id; and applicant(sO NOT 24 Hindes Road, Harrow, Middlesex, Englande It/are the actual inventor(s) of the invention and the facts upon which the applicant (a) Js/are entitled to make the application are as; follows:- {)Recite manner la -as regards entitlement under Section 34 of the Act which aPplicant s) derive(s) titl. fromi The Applicant is the Assignee of the said inventore 4,ctuai inventorial If ,ppllcantla) NOT

C1 1, inventor (O

Delete entirely It Convention priority MNI 11 1N51 u NOT claimed.

application madereferred to in paragraph 2 of this Declaration was/= (w)hicht applicant($) dorve~ltk*(t I4. theThe firstbasic application in a Convention country in respect of the invention the applicant(sO NOT Isubject of the application. basi bJy, Middlesex, ilnaatorala) cc Declared at we *y Md this' 12~ dKay of J)ece'.,W 1978 (N.S.-No seal or #tarnp impression to be applied). r

To: The Coinmiasioner Of Pates..~ .1 Commonwealth of Ausrla GwFrmaAwE &FRAzER, Box 2133, GY.O., SYDNKY 2001. AUSTRAUA

(11) AU-A 42736/78

(12) PATENT SPECIFICATION ABSTRACT (19) AU

42736/78 (22) 20.12.78 (23) 20.12.78 (24) 29.12.77 (21) (31) 54152/77 (32) 29.12.77 (33) GB

(43) 5.7.79 (51)2 F240 7/08 GOUF 15/02 GO6F 15/20 GO5B 19/20

(54) A COOKING AID USING A SOLID STATE LOGIC CIRCUIT (71) CANNON INDUSTRIES LTD. (72) WARREN J.W. WILLIAMS R. AND MOORE N.G. (74) GH (57) CLAIM

1o A cooking aid comprising a solid statc logic circui, means providing variable inputs thereto representative of the material t'o be cooked, the weight of the material and the degree of cooking required, and a visual display means, the logic circuit being capable of generating in response to said variable inputs, output signals indicative of the appropriate cooking time and temperature, a-nd the display means being arranged to provide a visual indication of said cooking time and temperature in response to said output signals. 8. A cooker incorporating a solid state logic circuit, means providing variable inputs thereto ropresentacive of the material to be cooked in the oven of the cooker, the weight of the material, and the degree of cooking required and the logic circuit being capable of generating, in response to said variable inputs, output signals indicative of the appropriate cooking time and temperature, and the cooker incorporating control means responsive to the output signals for controlling the temperature and time of the cooking operation.

.e2

(11) AU-A 42736/78 2

21. A cooker incorporating or associated with a computer having keypads for feeding into the computer data representing the food to be cooked in the oven of the cooker, the degree of cooking required and the time that the food is required, and a weighing device arranged to feed into the computer data indicative of the weight of food placed on the device, the computer being arranged to calculate from said data the appropriate cooking period and oven temperature setting, for feeding into the logic circuit information to indicate the time at which the cooking operation is required to be completed, and means for automatically starting the cooking operation at an instant such that the cooking operation is completed at the selected time.

24.3

WIY^-ii..-iiiiYUi-~~_i I*L _II-L.~I~L1 l ~L -liUn~Y~LLl(iY^__II

Form *COMMONWEALTH OF AUSTRALIA

PATENTS ACT '4952-69

COMPLETE SPECIFICATION (ORIGINAL)

4 2 73 G/78 FOR OFFICE USE: Class Int. Class Application Number 4 Lodged: S 4

0O

*.Complete Specification Lqdged S Published 0- SOor

Related Art

00*

TO BE COMPLETED BY APPLICANT Name of Applicant: CANNON INDUSTRIES LIMITED 0.

S

Gough Roa#O, Bilston, Address of Applicant: West Midlands WV14 8XR, e.g. 0 ENGLAND. SO 0 5* John William Warren, Reginald Williams and *etual Inventor: Nigel Graham Moore.

Griffith, Hassel &,Frazer, Address for Service: 323 Castlereagh St., SYDNEY N.S.W. 2000 AUSTRALIA

Complete Specification for the invention entitled: "COOKING AIDS"

The foilowing statement is a full description of this invention, with the-best method of performing it kn~own to me/us:-

This invention relates to aids to cooking., It is known that, when roasting meat, for example, the time for which the meat needs to be cooked in an oven depends upon both the weight of the meat and the desired degree to which the meat is required to be cooked to suit the taste of the individual, for example from rare to well 0 *6 6 done. The temperature and/or time also depending upon the 0 00*e type of meat being cooked. Other materials also require to 06 00 0 6 be cooked at different temperatures and for different times 0 *6 10 depending upon the nature of the material and the weight 600 6

00 0 thereof. 0 00 6 Accordi.ng to one aspect of thle invention a cooking 0

a aid comprises a solid state logic circuit, means providing 0600 variable inputs thereto representative of the material to be cooked, the weight of the material and the degree of 06 cooking required, and a visual display means, the logic 0 0 66 circuit being capable of generating in response to said 00 0 *00 variable inputs, output signals indicative of the appropriate S

00 0 cooking time and temperature, and the display means being 00 S. 20 arranged to provide a visual indication of said cooking time 0 060060 0 and temperature in response to said output signals. 0 6000 The cooking aid may incorporate a plurality of keys 0 00@0 each representing a different material or alternatively the 00 0 00 60 device may be associated with a recipe book or instruction sheet giving input information representative of various materials, aad possibly also the degree of cooking required which can be fed into the logic circuit in coded form. The required~ oven temperature may be arranged to be displayed directly i:a degrees, either Fahrenheit or Centigrade, Lnd in some t.ases a conversion key may be provided for converting the temperature displayed from one scale to thi, other. In an alternative arrangement, where the device is intended to be used with a particular cooker, the temperature display may be in the form of a thermostat setting, for example in numerical form appropriate to that cooker. Again a key may be provided for converting the display from a thermostat setting to one or other of the temperature scales. The actual temperature attained by the .d L oven when in use may also be dispiLayed, or alternativel~y the display may provide a visual indication that the ovii. emperture requied hbeen reached. The cooking aid may in some cases incorporate a weighing device for the material to be cooked, the output from the weighing elavice constituting an input to the logic circuit and being arranged to control the logic circuit directly. During a weighing process tha weight of the material being weighed may be arranged to b~e displayed on the visual display, in either avoirdupois or metric weight S units. The cooking aid may be incorporated into a cooker, 0*6 either a gas or an electric cooker, and the output from 000: the logic circuit, in addition to providing a visual display, may then be arranged to control the cooking operation directly, for example by setting a thermostat, and cutting off the supply of heat at the end of the appropriate 0 cooking period. 0: According therefore, to another aspect of the 6040:~ 20 invention, a cooker incor~porates a salj.d state logic circuit, 000*0: means pro'vidir_ variable inputs thereto representative of the material to be cooked in the oven of the cooker, the weight of the material, and the degree of cooking required, and the logic circuit being capable of generating, in *0 10: response to said variable inputs, output signals indicative of the appropriate cooking time and temperature, and the cooker incorporating control means responsive to the output signals for controlling the temperature and time of the cooking operation. Thus in the case of a gas cooker an output from the logic circuit is arranged to control at least one gas valve controlling the supply of gas to one or more gas burners within the oven in response to tezperature signals fed into the logic circuit from one or more temperature sensors. The cocker may incorporate a plurality of temperature sensors-disposed at different positions within the oven. In some cases a plurality of gas burners my be disposed at diffe rent positions in the oven, with the gas supply to

Go individual burners controlled by ,;epapate gas valves, the 11 valves being arranged to be controlled in response to M temperature signals fed int-o the logic circuit from an associated temperature sensor. In the cE-.se of an electric cooker a plurality of electric heating elements may be disposed in different positions within the oven, vrith the electric current to the different elements controlled by separate switching devices, each of which is similarly arranged to be controlled in response to temperature signals fed into the logic circuit from an appropriately positioned temperature sensor. In some cases a cooker might incorporate an automatic timer having means for delaying the start of a cooking operation until an instant such that the calculated cooking period terminates at a pre-set time. The cooker may also incorporate a weighing device whose output is fed directly to the logic circuit to provide one of the inputs thereto as previously described. 20The cooker preferably incorporates a display means providing a visual indication of7 the cookirug time and t~mperatureor other information for example the time. whcn a cooking operation is set to finish. M~oreover the logic circuit may be capable of being programmed to vary the ckq1iinL temperature for certain -materials being cooked over the cooking period, in order to follow a desired cooking profile. Whilst the invention is particularly suitable for use as an aid to cooking meat, the lo-ic circuit may in some cases be programmed to display or control the times and temperatures for cooking other items. The lo~ic circuit may also be arranged to control the operation of hob units which may be mounted on or separate from the oven. Thus the logic circuit may be fed with information to indicate food to be cooked, an empty vessel being placed on the weighing device, and the food placed in'uo it, t-ogether wijh water or other liquid if required, so that the weight of th~e food and the amount of water or other liquid added can be aalculated, the logic circuit then controlling w~m~ the operation of the ;-.ypropriate iiob unit ibe brineg the contents of the ye sf~ oto the boil andi simmer for an tirnr~~ 1pnQ-th of timne, The otart of' the cookinrg M operation, e.g. the ignition of a gas burner or the c-4 5 switching on of an electric heater, can be arranged to ta-<e I" place automatically at a time calculated by the logic circuit, in order to complete the cooking operation at a selected time. The time selected must of course, be such that an adequate length of time is allowed for the cooking 10 operation. number of different embodiments of the invention Ail wilnow be described by way of example with reference to Figures I to 4 of the accompanying schematic drawing in which Figure 1 illustrates diagrammatically one form of device in accordance with the invention, Figures 2 and 3 represent modified forms of the device illustroted in Figure 1 and Figure 4 represents, also diagrammatically, a more :20 sophisticated arrangement in accordance with the invention for controlling the operation of a gas cooker. Referring first to Figure 1, this illustrates in diagrammatic form a device for indicating -the temperatures ana 0. cooking times for various ty, as -and weights of meat, the device incorporating, within an outer casing a solid state electronic logic circuit 2 having a visual display panel 3 The casing carries a first set of keys 4 which can be selectively depressed to correspond to the type of meat to be cooked, a second set of keys 5 which can be selectively depressed to correspond to the weight of the meat, and a third set of keys 6 which can be selectively depressed to correspond to the degree of cooking required, that is to say rare, medium and well done. The depression of the keys 4,5, and 6 provides instUructions to the electronic logic circuit, the output of which serves to energize the display panel 3 to indicate both the temperature and time of cooking applicable to the meat to be cooked.

Both the temperature anu timU may be displayed Ssimultaneously, or alternatively ttiry may be displayed o0 separately by depressing appropriate output keys, such as Sthose shown at 7. C14 5 Whilst the temperature .may be given in degrees it IV can, where the calculator is designed for use with the thermostat control of a particular cooker, be arranged to display an appropriate thermostat setting. In the latter

t case a further key (not shown) may be provided for 10 converting th 3 thermostat setting display to figureson a temperature scale. Moreover the first and third set of keys may be combined to provide a single coded input, corresponding xo the particular type of meat and the degree of cooking required, and obtained, for example, from an associated instruction sheet or recipe book. For example, instead of the keys carrying the legends shown they might bear digits, and the instruction sheet or recipe book give a unique set of digits 20 corresponding to the type of meat and the degree of cooking required. As well as "medium" there may be other intermediate conditions catered for between "rare" and "well done", as indicated. Figure 2 represents a modified form of the device illustrated in Figure 1 combined with a weighing device 8 for weighing the meat to be cooked. The logic "circuit" is housed within the body 9 of the weighing device and the output of the latter is fed directly to the logic circuit, the second set of keys 5 then being dispensed with. The visual display 3 may, on the actuation of a "weigh" key as at '10 be arranged to indicate the weight of the meat, and to indicate the cooking time and temperature on the actuation of an appropriate one of the keys 7. A third embodiment of the invention, illustrated in Figure 3 is a further modification of that shown in Figure 1. In this embodiment the logic circuit 1 is incorporated into the control system of the oven 11, of a gas cooker represented diagrammatically at 12.

The output of the logic circuit is arranbed to Go control a thermostat control and a timer so as to provide the appropriate temperature and cooking time in dependenice upon the setting of the keys 4,5, and 6, as well as indicating these values on a display panel 3. The cooker may incorporate a weighing device whose output is arranged to be fed directly into the logic circuit as in the modification illustrated in Figure 2, the Rweight" keys 5 in such a case being similarly dispensed with. Further refinements may readily be provided, and Figure 4 illustrates a further form of control arrangement; for a gas cooker in the form of a microcomputer. This incorporates keypads 14, and 16 for feeding into the control compouter via a parallel input interface data representing the material to be cooked and the degree of cooking required, and a weighing device 18 the output of which is fed into the control system as in the arrangement described with reference to Figure 2, via an analogue to digital interface 19. 20 These inputs are fed into a microprocessor 20 which effectively selects a program in a programmable read only memory 27. A number of programs are stored in the programmable read only memory (PROM) 27. The first of these controls the commnications with the user and will accept commands from the function keypad 14 and the data entry keypad 16 via the parallel input interface 17. This information is stored within the microcomputer in the random access memory 28, along with the weight of the food, read from the scales 18 and transferred via the analogue to digital interface 19. Other programs in the PRCM relate to the cooking of specific foods and are selected by reference to the data in the random access memory. The cooking program uses the parameters that bave already been stored in the random access memory to calculate the cooking time~ and oven temperature settings. From this calculation, together with information on the time tbat the food is required also fed into the system by appropriate keys on the data keypad 16, the start of cooking

W

-8-

time can be determined. The cooking is initia'e& by a signal being sent via the cooker interface 24 and suitable

operated gas valve of any convenient kiLd and ignite the oven C%4

burner util~sng any suitable electrical ignition system. The control of temperature may be achieved by direct control of the gas valve using temperature measurements from the oven, 000 entered into the processor via the analogue to digital *0 0 interface 19. A number of temperature sensors may be provided 00 0 10 if desired at different parts of the oven to provide a more 9* 0 accurate control of the oven temperature. in some cases 0 0 separate valves controlling two or more differently positioned 0000* burners may be individually controlled. The progress of 0 00 cooking can be indicated by outputs from the microcomputer via the parallel output interface 21 to a clock display 22 and a function and data display 23. The interval timer 26 is a means of relating the operation to real time and is used by S0 000 the microcomputer to update the system clock. In some cases 0 000 a display of the time of day can be requested by the user, by 20 means of an appropriate key. 00

A further output may also b, arranged to energise a device giving an audible or visual signal that a cooking 0 0 O0 operation has been completed. The selected program may also be arranged to adjust the thermostat for varying the cooking temperature at different times during a cooking operation. For example, when cooking meat it may be desirable to heat the oven to a suitably high temperature for a first part of the cooking period and then to reduce the temperature towards the end of the period. This can readily be arranged with an arrangement as aove described. In addition to controlling the oven the timer may be arranged to control the ignition of hob units at appropriate pre-set times, a further control (not shown) being provided for this purpose. Furthermore the control arrangement may be utilised to control the hob units in dependence on the materials and the quantity being heated thereon in a similar manner to material being cooked in the oven. For example, a vessel

Ma su'oh as a saucepan, may be arranged to bce plu±ced on the scale, information on the food to be cooked being fed into the computer, the food being placed in the vessel, and an amount of water added if required, the-computer being C%'4 5 arranged to control a selected burner on which the vessel is subsequently placed, to bring the contents of the'vessel to the boil and simmer for an appropriate time, the completicn of the whole cycle being controlled as for the oven. Flame detectors for the oven and the hobs may be provided for effecting through the control system a closure of a valve to a respective burner in the event tbhat the 0: burner flame extinguishes or fails to ignite. It will be seen that the invention provides a versatile cooking aid, and in connection with a microcomputer controller as above described enables various cooking operations to be automatically controlled. The various elements of such a controller capable of controlling the required sequence of cooking operations are available in 41 standard form and may readily be selected by those skilled oeo 20 in the art for performing the requisite control.

goo*

Claims (23)

The claim, defining the invention are as follows

1. A cooking aid comprising a solid state logic circuit, mcans nroviding variable inputs thereto representative Q4 of the material to bt cooked, the weight of the material and V the degree of cooking required, and a visual display means, the logic circuit being capable of generating in response to said variable inputs, output signals indicative of the 0e

appropriate cooking time and temperature, and the display means being arranged to provide a.visual indication of said

.00 cooking time and temperature in response to said output :0 signals. 0-6'

2. A cooking and according to Claim I incorporating a weighing device for the material to be cooked, the output from the weighing device constituting an input to the logic circuit and being arranged to control the logic circuit 5 directly,

3. A cooking aid according to Claim 2 wherein, during a weighing process, the weight of the material being weighed is arranged to be displayed on the visual display means.

4. A cooking aid according to any preceding claim "00 20 associated with the oven of a cooker, and in which an output from the logic circuit is arranged to control the cooking operation directly by setting an oven thermostat and/or by cutting off the supply of heat to the oven at the end of the appropriate cooking period.

5. A cooking aid according to Claim wherein the logic circuit is also arranged to control the operation of one or more hob units.

6. A cooking aid according to Claim 5 incorporating means for feeding into the logic circuit information to indicate the food to be sooked in a vessel on a said hob unit, the weight of food, and the amount of water or other liquid added, the logic circuit being arranged to control the operation of the hob unit so as to cause the contents of the Vessel to be brought to the boil and siimered for an appropriate length of time.

7. A- cooking aid according tc Claim 6 including means for feeding into the logic circuit information to indicate the time at which the cooking operation is required to be S completed, and means for automatically starting the cooking operation at an instant such that the cooking operation is C4 5 completed at the selected time.

8. A cooker incorporating a solid state logic circuit, means providing variable inputs thereto representative of S the material to be cooked in the oven of the cooker, the weight of the material, and the degree of cooking required, and the logic circuit being capable of generating, in response to said variable inputs, output signals indicative of the appropriate cooking time and temperature, and the cooker incorporating control means responsive to the output t** signals for controlling the temperature and time of the cooking operation.

9. A cooker according to Claim 8 incorporating an S0* automatic timer having means for delaying the start of a cooking operation until an instant such that the calculated cooking period terminates at a pre-set time.

10. A coorer according to Claim 8 or 9 incorporating a weighing device for material to be cooked, and whose output provides an input to the logic circuit.

11. A cooker according to any one of Claims 8 to wherein the' logic circuit is capable of being programmed to vary the cooking temperature for certain materials being cooked over the cooking period, in order to follow a desired cooking profile.

12. A cooker according to any one of Claims 8 to 11 having a display means for providing a visual indication of the cooking time and temperature.

13. A cooker accordig to any one of Claims 8 to 12 wherein the oven is he'atable by means of one or more gas burners.

14. A cooker accordig to Claim 13 wherein an output from the logic circuit is qrranged to control at least one gas valve controlling the 'upply of gas to one or more gas burners within the oven in resonse to temperature signals fed into the logic circuit from one or more temperature sensors. S

A cooker according to Claim 14 incorporating a plurality of temperature sensors disposed at different positions within t oven. CO

16. A cocker according to Claim 15 incorporating a _1 5 plurality of gas burners disposed at different positions "l within the oven, and a plurality of gas valves controlling the supply of gas to respective burners, each of which valves is arranged to be controlled in response to temperature signals fed into the logic circuit from an associated 10 temperature sensor.

17. A cooker according to any one of Claims 8 to 12 wherein the oven is beatable by one or more electric heatimg elements.

18. A cooker according to Claim 17 wherein an output from the logic circuit is arranged to control at least one switching device controlling the supply of electric current to one or more heating elements within the oven in response to temperature signals fed into the logic circuit from one or more temperature sensors. 20

19. A cooker according to Claim 18 incorporating a

plurality of temperature sensors disposed at different positions within the oven.

20. A cooker according to Claim 19 incorporating a plurality of heating elements disposed at different positions within the oven, and a plurality of switching devices controlling the supply of electric current to respective elements, each of which switching devices is arranged to be controlled in response to temperature signals fed into the logic circuit from an associated temperatr"' censor.

21. A cooker incorporating or associated with a computer having keypads for feeding into the computer data representing the food to be cooked in the oven of the cooker, the degree of cooking required and the time that the food is required, and a weighing device arranged to feed into the computer data indicative of the weight of food placed on the device, the computer being arranged to calculate from said data the appropriate cooking period and oven temperature setting,

*i

13

to initiate the cooking operation, control the oven temperature during the cooking operation, and terminate S the operation at the selected time.

22. A cooking aid substantially as shown in and as hereinbefore described with reference to Figures I or 2 of C the accompanying drawings.

23. A cooker substantially as shown in and as hereinbefore described wiith reference to Figures 3 and 4 of the accompanying drawings.

*0

•Dated this 19th day of December, 1978

000 CANNON INDUSTRIES LIMITED By their Pdnt Attrneys GRIFFITH,HASSEL FRAZER.

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