CA2152015C - Safety device for a heating appliance - Google Patents
Safety device for a heating applianceInfo
- Publication number
- CA2152015C CA2152015C CA002152015A CA2152015A CA2152015C CA 2152015 C CA2152015 C CA 2152015C CA 002152015 A CA002152015 A CA 002152015A CA 2152015 A CA2152015 A CA 2152015A CA 2152015 C CA2152015 C CA 2152015C
- Authority
- CA
- Canada
- Prior art keywords
- safety device
- stove
- detecting
- timer
- operational condition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- 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
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0227—Applications
- H05B1/0252—Domestic applications
- H05B1/0258—For cooking
- H05B1/0261—For cooking of food
- H05B1/0263—Ovens
-
- 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
Abstract
There is provided a safety device for electric stoves and ovens wherein there is provided a sensor for sensing when the stove is heating at a certain rate which could constitute a safety hazard and a sensing means for detecting the presence of a person within a predetermined area proximate the stove. When a certain period of time passes without motion by a person in the predetermined area while the stove is in the predetermined operating condition, power to the stove can be reduced.
Description
'~_ S P E I~ l F l~ A rr l: O N
TTTLE: Safety device for a heating appliance The present invention relates to a safety device for a heating applian~e .
Electric stoves and ovens are examples of heating appliances widely used in today's soGiety and each year there are a number of fires which ocGur as a result of stoves or oYens being le~t on at an overly high temperature. Often these fires result from the ne~iigence of the building occupant in turning on a stove and subsequent].y ]~ forgetting that it is on. As a result, materials like oils Gan catch fire and result in considerable loss of property an~d even life. Obviously~ it would be desirable to incorporate a safety device with a stove top or oven to prevent swGh occurrences.
The prior art teaGhes a plurality Or temperature controls which 15 are adapted to maintain a Gooking element (often an oven,~ at a constant temperature. US Patent 3~86747~ SGahauer teaGhes a system whiGh is adapted to turn off a self-cleaning oven when an excessive temperature is reaGhed andlor cooling fan failure ocGurs. This system is limited to self-cleaning ovens and does not provide any protection 20 against a fire danger with respeGt to a stove top arrangement, Canadian patent 17152,139 discloses another type of GUt off deviGe whiGh is adapted to be used in an oven. The device is based on a Ghange of surface texture of an item covking in the oven.
It is an objeGt of the present invention to provide a safety 25 deviGe which funGtions to reduce the heat output of a heating appliance when Gertain preset conditions are not met.
I:t is further object of the present invention to provide a safety deviGe suitable for use with a cooking appliance wherein the power is cut off when a predeterrnined current and absenGe of motion is 1 Al Cg876.DOC' 1 8~041] 997 A
CA 021~7201~7 1998-02-OS
detected .
A further object of the present invention is to provide a safety deviGe for a stove top or oven which Gan utilized with commerGially availal~le models without substantial modification thereto.
It is a further object of the present invention to provide a safety deviGe which can be incorporated inside a stove at the factory.
AcG~}rding to one aspeGt of the present invention, there is provided a safety device for a heating apparatus, the device comprising first sensing means for sensing the presenGe of a person 1~ within a predeterm;ned area7 second sensing means for sensing an operati~nal Gondition o~ the heating apparatus, and means for reducing heat output fr~m said apparatus after said second sensing means senses a predetermined operational condition and said first sensing means fail to sense the presence of a person within said predetermined area for a predetermined period of time.
In greater detail, the deviGe of the present invention uses at least two different sensing devices which, ~hen certain conditions oGcur' operate to send a signal to means for reducing the heat output from the apparatus.
TTTLE: Safety device for a heating appliance The present invention relates to a safety device for a heating applian~e .
Electric stoves and ovens are examples of heating appliances widely used in today's soGiety and each year there are a number of fires which ocGur as a result of stoves or oYens being le~t on at an overly high temperature. Often these fires result from the ne~iigence of the building occupant in turning on a stove and subsequent].y ]~ forgetting that it is on. As a result, materials like oils Gan catch fire and result in considerable loss of property an~d even life. Obviously~ it would be desirable to incorporate a safety device with a stove top or oven to prevent swGh occurrences.
The prior art teaGhes a plurality Or temperature controls which 15 are adapted to maintain a Gooking element (often an oven,~ at a constant temperature. US Patent 3~86747~ SGahauer teaGhes a system whiGh is adapted to turn off a self-cleaning oven when an excessive temperature is reaGhed andlor cooling fan failure ocGurs. This system is limited to self-cleaning ovens and does not provide any protection 20 against a fire danger with respeGt to a stove top arrangement, Canadian patent 17152,139 discloses another type of GUt off deviGe whiGh is adapted to be used in an oven. The device is based on a Ghange of surface texture of an item covking in the oven.
It is an objeGt of the present invention to provide a safety 25 deviGe which funGtions to reduce the heat output of a heating appliance when Gertain preset conditions are not met.
I:t is further object of the present invention to provide a safety deviGe suitable for use with a cooking appliance wherein the power is cut off when a predeterrnined current and absenGe of motion is 1 Al Cg876.DOC' 1 8~041] 997 A
CA 021~7201~7 1998-02-OS
detected .
A further object of the present invention is to provide a safety deviGe for a stove top or oven which Gan utilized with commerGially availal~le models without substantial modification thereto.
It is a further object of the present invention to provide a safety deviGe which can be incorporated inside a stove at the factory.
AcG~}rding to one aspeGt of the present invention, there is provided a safety device for a heating apparatus, the device comprising first sensing means for sensing the presenGe of a person 1~ within a predeterm;ned area7 second sensing means for sensing an operati~nal Gondition o~ the heating apparatus, and means for reducing heat output fr~m said apparatus after said second sensing means senses a predetermined operational condition and said first sensing means fail to sense the presence of a person within said predetermined area for a predetermined period of time.
In greater detail, the deviGe of the present invention uses at least two different sensing devices which, ~hen certain conditions oGcur' operate to send a signal to means for reducing the heat output from the apparatus.
2~ The present invention will ~e desGribed in terrns of a conventional residential eleGtric stoves although it will be understood that one kno~ledgeable in the art can equally well incorporate the invention in other types of heating apparatuses suGh as ~as stoves, other gas heaters7 electriGal heaters, etG.
In general terms, the first sensing means are adapted t~ deteGt the presence of a person within a predetermined area. The predetermined area would normally be in the general location of the stove and the sensing means is used in conjunGtion with a timer.
Thus, as long as there is movement proximate the stove within Gertain I ~1 C8~76.1~ 2 ] 8104~199'7 ~., -time delays, the stove will continue to function in a normal manner.
However? when the sensing means fail to detect motion for a certain period of time; then the first predetermined Gondition is established for reducing the heat outpwt from the apparatus or appliance.
The means for sensing the movement may be any appropriate and known in the art. Thus, one could utili~e various types of motions detectors inGluding ultrasoniG, magnetic, infrared and the like. Such sensors are well known in the art and commercially available.
The period of time required to cause the first predetermined 1~ condition to ~e met ~an be varied. Thus, the period of time could vary depending upon the loGation, particular CirCumStanGeS, ~tG. N~rmally, a delay of between two to seven minutes ~fould be appropriate. The system could include means for varying the time such that the user could, under certain conditions, ~et it to shorter time periods when appropriate.
The seGond sensing rneans is also used to sense various operational ~onditions. These condit;ons Gould range from certain temperature values to other analog measurements suGh as electriG
current flow, gas flow, etG. For example, in the Gase of an eleGtriG
2{~ stove, one could measwre the electriG current output to a given burner and when this output is in excess of a given value, and in conjunction with the predetermined condition of the first sensing means bein~s met, will function to reduce the heat output. Again, by way of an example, one could, in the case of an electric stove~ deGide that any heat over a medium setting woul~ be suffiGient to meet the seGond predetermined condition.
As mentioned, the seGond sensing means for deteGting an the operational Gondition of the heating apparatus may vary between those suGh as eleGtri~ current deteGtion, heat detection~ etc.
1,~IC8876.1~ 3 18iO4/1997 CA 021~201~ 1998-02-0~
When the predetermined conditions are met ~no motion within a certain time period and ~ithin the operational Gondition), the apparatus will function to reduce the heat output.
~ epending upon the type of system employed, this may vary from 5 reduGing the eleGtriGa1 power to the heating apparatus through various known means to the step of Gutting all power thereto. It will be understood that suitable means to reduce heat output are well known to those skilled in the art.
In Gonjunction with the above, various alarm means and the like 10 may be employed. These alarm means can include both audio and visual alarms and Gombinations thereof.
In a preferred embodiment, the deviGe is used in Gonjunction with an electric stove and is Gonnected to be operational both for the normal stove top heating elements and for the oven. For the stove top 15 elements, one wuuld employ a predetermined time delay of between 5 to 10 minutes and with a heat setting on any of the elements over a medium or medium low setting. If motion were not deteGted within this time period, an alarm would be activated to permit a person to verify the stove top Gonditions. Following a period further of time 20 ~30 seconds - 2 minutes~, power would be cut to the stove top. In order to Gontinue heating, a reset mechanism Gould be used.
In the Gase of the oven, it is understood that many Gooking conditions require a long period of time and Gontinual verification is not required. However, there are Gertain Gonditions which are more 25 dangerous including, for example, the use of the upper element in the oven for broilin~. AGcordingly, one could utilize a mechanism which ~ould be activated onl~ when, for example, the broil element is utilized andior a certain temperature is achieved.
H:aving thus generally described the invention~ reference will be 1 A I C8876 ]~o~ 4 1~04~1()97 ', ~A
CA 021~201S 1998-02-0~
made to the aGcompanying drawings illustrating an embodiment thereof~ in which:
Figure I is a perspective view of an electriG stove embodying the safety de~iGe of the present invention, Figure I A is a top view illustratin~; the range of operation of t he sen si ng deYi Ge, Figure lB is a side vie~ illustrating operation of the sensing de~iGe;
Fi~ure ~ is a block diagram illustrating the logic;
Figure 3 is a block diagram showing operation of the safety deviGe;
Figure 4 is a perspeGtive view illustrating adaptation of the invention to an existing stoYe.
Referring to the drawings in greater detail and by reference characters thereto, there is illustrated in Figures 1~ lA and lB a conventional stove which inGludes a plurality of heating elements 12 and an oven section generally designated by reference numeral 14. On a front panel, there are provided a pair of infrared emitters l 6 and a infrared receptor 18. Emitters 16 are adapted to emit an infrared signal in a pattern whiGh has a generally tear drop pattern 20 as shown in Figwres IA and IB. Pattern 20 would normally extend outwardly a distance of between 3 to 7 feet and as noted, does not cover a lower area near the floor to thereby prevent false signals being given by animals or the like.
Operation of the invention is illustrated in Figure ~ which, as shown, inGludes a first sensor 22 which may sense the consumption of power by the electric stove. Sensor 22 is operatively Gonnected to a decoder 24 which in turn provides a signal to a first timer 2~ and a second timer 28 A motion sensor 30 also inputs to both timers 26 8 8 7 6 . 1:~ 0 C 5 1 x/0411~97 .
~. .J
CA 02l520l5 l998-02-05 ' '~,.._ and 28.
When both predetermined conditions are met (laGk of motion for a period r3f time and a predetermined consumptivn level), an alarm 32 i5 activated. Alarm 32 in turn inputs to a third timer ~4 following whiGh a signal is provided to power control circuit 3~ to cut off the power.
An electrical schematic is illustrated in Figure 3 and as may be seen, a controller circuit 3 8 receives input from the infrared reGeptors and also a voltage detection sensor (different voltages 10 being used for the stove top and the oven) and from the third timer which is aGtivated following the operation of the alarm.
A variation of the invention is illustrated in Figure 4 wherein the device can be adapted to existin~ setups. In this instance, there is illustrated an oven 50 and a sensor module 52 adapted to function by 1~ emitting and receiving a signal as previously discussed.
A monitoring module 54 is operatively Gonnected to seosor module 52 and a Gontrol module 64. Monitoring module 54 may include LEDs 56 indicating the status thereof. In addition, monitoring module 54 may include a reset button 58, a time adjustment knob 60 20 and an alarm 62.
~ ontrol module 64 would include the Gontrol circuitry and in the illustrated embodiment, inGludes a plug receptacle 66 to reGeive the plug from the stove ~0 while it itself has a module plug ~8.
lt wi.ll be understood that the above described embodiments are 2~ for purposes of illustration only and that Ghanges and modifiGations may be made thereto without departing from the spirit and sGope of the invention.
1AlC~$~7-j DOC~ 6 3 ~/11413 3'37 A
, ~
In general terms, the first sensing means are adapted t~ deteGt the presence of a person within a predetermined area. The predetermined area would normally be in the general location of the stove and the sensing means is used in conjunGtion with a timer.
Thus, as long as there is movement proximate the stove within Gertain I ~1 C8~76.1~ 2 ] 8104~199'7 ~., -time delays, the stove will continue to function in a normal manner.
However? when the sensing means fail to detect motion for a certain period of time; then the first predetermined Gondition is established for reducing the heat outpwt from the apparatus or appliance.
The means for sensing the movement may be any appropriate and known in the art. Thus, one could utili~e various types of motions detectors inGluding ultrasoniG, magnetic, infrared and the like. Such sensors are well known in the art and commercially available.
The period of time required to cause the first predetermined 1~ condition to ~e met ~an be varied. Thus, the period of time could vary depending upon the loGation, particular CirCumStanGeS, ~tG. N~rmally, a delay of between two to seven minutes ~fould be appropriate. The system could include means for varying the time such that the user could, under certain conditions, ~et it to shorter time periods when appropriate.
The seGond sensing rneans is also used to sense various operational ~onditions. These condit;ons Gould range from certain temperature values to other analog measurements suGh as electriG
current flow, gas flow, etG. For example, in the Gase of an eleGtriG
2{~ stove, one could measwre the electriG current output to a given burner and when this output is in excess of a given value, and in conjunction with the predetermined condition of the first sensing means bein~s met, will function to reduce the heat output. Again, by way of an example, one could, in the case of an electric stove~ deGide that any heat over a medium setting woul~ be suffiGient to meet the seGond predetermined condition.
As mentioned, the seGond sensing means for deteGting an the operational Gondition of the heating apparatus may vary between those suGh as eleGtri~ current deteGtion, heat detection~ etc.
1,~IC8876.1~ 3 18iO4/1997 CA 021~201~ 1998-02-0~
When the predetermined conditions are met ~no motion within a certain time period and ~ithin the operational Gondition), the apparatus will function to reduce the heat output.
~ epending upon the type of system employed, this may vary from 5 reduGing the eleGtriGa1 power to the heating apparatus through various known means to the step of Gutting all power thereto. It will be understood that suitable means to reduce heat output are well known to those skilled in the art.
In Gonjunction with the above, various alarm means and the like 10 may be employed. These alarm means can include both audio and visual alarms and Gombinations thereof.
In a preferred embodiment, the deviGe is used in Gonjunction with an electric stove and is Gonnected to be operational both for the normal stove top heating elements and for the oven. For the stove top 15 elements, one wuuld employ a predetermined time delay of between 5 to 10 minutes and with a heat setting on any of the elements over a medium or medium low setting. If motion were not deteGted within this time period, an alarm would be activated to permit a person to verify the stove top Gonditions. Following a period further of time 20 ~30 seconds - 2 minutes~, power would be cut to the stove top. In order to Gontinue heating, a reset mechanism Gould be used.
In the Gase of the oven, it is understood that many Gooking conditions require a long period of time and Gontinual verification is not required. However, there are Gertain Gonditions which are more 25 dangerous including, for example, the use of the upper element in the oven for broilin~. AGcordingly, one could utilize a mechanism which ~ould be activated onl~ when, for example, the broil element is utilized andior a certain temperature is achieved.
H:aving thus generally described the invention~ reference will be 1 A I C8876 ]~o~ 4 1~04~1()97 ', ~A
CA 021~201S 1998-02-0~
made to the aGcompanying drawings illustrating an embodiment thereof~ in which:
Figure I is a perspective view of an electriG stove embodying the safety de~iGe of the present invention, Figure I A is a top view illustratin~; the range of operation of t he sen si ng deYi Ge, Figure lB is a side vie~ illustrating operation of the sensing de~iGe;
Fi~ure ~ is a block diagram illustrating the logic;
Figure 3 is a block diagram showing operation of the safety deviGe;
Figure 4 is a perspeGtive view illustrating adaptation of the invention to an existing stoYe.
Referring to the drawings in greater detail and by reference characters thereto, there is illustrated in Figures 1~ lA and lB a conventional stove which inGludes a plurality of heating elements 12 and an oven section generally designated by reference numeral 14. On a front panel, there are provided a pair of infrared emitters l 6 and a infrared receptor 18. Emitters 16 are adapted to emit an infrared signal in a pattern whiGh has a generally tear drop pattern 20 as shown in Figwres IA and IB. Pattern 20 would normally extend outwardly a distance of between 3 to 7 feet and as noted, does not cover a lower area near the floor to thereby prevent false signals being given by animals or the like.
Operation of the invention is illustrated in Figure ~ which, as shown, inGludes a first sensor 22 which may sense the consumption of power by the electric stove. Sensor 22 is operatively Gonnected to a decoder 24 which in turn provides a signal to a first timer 2~ and a second timer 28 A motion sensor 30 also inputs to both timers 26 8 8 7 6 . 1:~ 0 C 5 1 x/0411~97 .
~. .J
CA 02l520l5 l998-02-05 ' '~,.._ and 28.
When both predetermined conditions are met (laGk of motion for a period r3f time and a predetermined consumptivn level), an alarm 32 i5 activated. Alarm 32 in turn inputs to a third timer ~4 following whiGh a signal is provided to power control circuit 3~ to cut off the power.
An electrical schematic is illustrated in Figure 3 and as may be seen, a controller circuit 3 8 receives input from the infrared reGeptors and also a voltage detection sensor (different voltages 10 being used for the stove top and the oven) and from the third timer which is aGtivated following the operation of the alarm.
A variation of the invention is illustrated in Figure 4 wherein the device can be adapted to existin~ setups. In this instance, there is illustrated an oven 50 and a sensor module 52 adapted to function by 1~ emitting and receiving a signal as previously discussed.
A monitoring module 54 is operatively Gonnected to seosor module 52 and a Gontrol module 64. Monitoring module 54 may include LEDs 56 indicating the status thereof. In addition, monitoring module 54 may include a reset button 58, a time adjustment knob 60 20 and an alarm 62.
~ ontrol module 64 would include the Gontrol circuitry and in the illustrated embodiment, inGludes a plug receptacle 66 to reGeive the plug from the stove ~0 while it itself has a module plug ~8.
lt wi.ll be understood that the above described embodiments are 2~ for purposes of illustration only and that Ghanges and modifiGations may be made thereto without departing from the spirit and sGope of the invention.
1AlC~$~7-j DOC~ 6 3 ~/11413 3'37 A
, ~
Claims (6)
1. A safety device for a stove being in an operational condition providing heat, said device comprising in combination:
-means for presence detecting within a predetermined area, said presence detecting means being subjected to three conditions to be valid, namely that the presence is to have a sufficient size and that said presence detecting means further comprise -means to emit a signal and means to receive a signal reflected by said presence, and -motion detecting means;
said safety device further comprising:
- means for reducing said heat, actuated by said presence detecting means.
- timer means linked to said presence detecting means and to said means for reducing heat, said timer means providing a predetermined time delay.
- means for detecting said operational condition of said stove;
said means for reducing heat being triggered when said means for presence detecting fails to detect said presence corresponding to said three conditions, in said predetermined time delay, and said means for operation detecting senses said operational condition.
-means for presence detecting within a predetermined area, said presence detecting means being subjected to three conditions to be valid, namely that the presence is to have a sufficient size and that said presence detecting means further comprise -means to emit a signal and means to receive a signal reflected by said presence, and -motion detecting means;
said safety device further comprising:
- means for reducing said heat, actuated by said presence detecting means.
- timer means linked to said presence detecting means and to said means for reducing heat, said timer means providing a predetermined time delay.
- means for detecting said operational condition of said stove;
said means for reducing heat being triggered when said means for presence detecting fails to detect said presence corresponding to said three conditions, in said predetermined time delay, and said means for operation detecting senses said operational condition.
2. The safety device of claim 1 wherein said timer means are operatively connected so that after a presence meeting said three conditions is detected, said timer means are reset and said means for reducing heat stay off.
3. The safety device of claim 2 wherein said means for presence detecting comprise infrared sensing means.
4. The safety device of claim 2 wherein said means for presence detecting comprise ultrasonic sensing means.
5. The safety device of claim 2 wherein said stove comprises a number of surface elements and an oven.
6. The safety device of claim 5 wherein said predetermined time delay is variable according to said operational condition.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/489,928 US5717188A (en) | 1995-06-12 | 1995-06-12 | Safety device for a heating appliance |
| CA002152015A CA2152015C (en) | 1995-06-12 | 1995-06-16 | Safety device for a heating appliance |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/489,928 US5717188A (en) | 1995-06-12 | 1995-06-12 | Safety device for a heating appliance |
| CA002152015A CA2152015C (en) | 1995-06-12 | 1995-06-16 | Safety device for a heating appliance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2152015A1 CA2152015A1 (en) | 1996-12-17 |
| CA2152015C true CA2152015C (en) | 1998-09-22 |
Family
ID=25678038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002152015A Expired - Lifetime CA2152015C (en) | 1995-06-12 | 1995-06-16 | Safety device for a heating appliance |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US5717188A (en) |
| CA (1) | CA2152015C (en) |
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| US8921743B2 (en) | 2010-10-22 | 2014-12-30 | Stovminder, Llc | Device and method for monitoring a heating appliance |
| US9739489B2 (en) | 2010-10-22 | 2017-08-22 | Stovminder, Llc | Monitoring system and method for monitoring a room |
| US8610036B2 (en) | 2010-10-22 | 2013-12-17 | Robert C. Ewell, Jr. | Device and method for monitoring a heating appliance |
| US8941483B2 (en) | 2012-03-02 | 2015-01-27 | Kenneth Davis | Heating appliance emergency reminder detection device |
| SE536689C2 (en) * | 2012-07-13 | 2014-05-27 | Sensagon Ab | Device that prevents stove fire and allows normal cooking to continue |
| WO2014138422A2 (en) * | 2013-03-06 | 2014-09-12 | Haier America Trading, Llc | Appliance monitoring system and method with connectivity and communication protocols |
| EP2775211A1 (en) * | 2013-03-08 | 2014-09-10 | Electrolux Appliances Aktiebolag | Method of operating a domestic cooking hob, control unit and domestic appliance |
| FI125053B (en) | 2014-01-10 | 2015-05-15 | Innohome Oy | Procedure and apparatus for monitoring safe use of stove |
| DE102014112169A1 (en) * | 2014-08-26 | 2016-03-03 | Miele & Cie. Kg | Method and device for controlling a domestic appliance and household appliance |
| US9536413B2 (en) * | 2014-09-03 | 2017-01-03 | Persia, Inc. | Verifying and monitoring stove operation |
| CN108027086B (en) | 2015-06-02 | 2019-11-05 | 诺泰克安全控制有限责任公司 | Wireless position sensor module for revolving actuator |
| ES2618798B1 (en) * | 2015-12-17 | 2018-04-06 | Bsh Electrodomésticos España, S.A. | Home appliance system with cooking range and functional unit |
| CA2929530C (en) | 2016-05-10 | 2020-03-24 | Iguardfire Ltd. | Controlling heat capability of appliance according to user proximity and notifying remote users via internet for increased safety |
| US10732012B2 (en) | 2016-06-02 | 2020-08-04 | Nortek Security & Control Llc | Wireless sensor system |
| IT201600112410A1 (en) * | 2016-11-08 | 2018-05-08 | Ico Sas | METHOD AND SAFETY SYSTEM |
| CN109717755A (en) * | 2019-03-14 | 2019-05-07 | 任向宇 | The safety device of electric cooking furnace |
| US20220010964A1 (en) * | 2020-07-13 | 2022-01-13 | Ashley L. Malcolm | Stovetop safety system |
| CN113251447B (en) * | 2021-06-02 | 2024-03-15 | 福州湘福机电科技有限公司 | Gas electric stove monitoring device based on infrared light sense and distance detection |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH599642A5 (en) * | 1976-11-15 | 1978-05-31 | Cerberus Ag | |
| US4461977A (en) * | 1982-12-01 | 1984-07-24 | The United States Of America As Represented By The Secretary Of The Navy | Single zone lighting controller |
| US4775913A (en) * | 1987-09-02 | 1988-10-04 | Ekblad Carl A | Safety shutoff device for a stove |
| FR2667477A1 (en) * | 1990-09-28 | 1992-04-03 | Philips Electronique Lab | HOT TABLE WITH AUTOMATIC CONTROLS. |
| US5357170A (en) * | 1993-02-12 | 1994-10-18 | Lutron Electronics Co., Inc. | Lighting control system with priority override |
| US5380983A (en) * | 1993-07-12 | 1995-01-10 | Black & Decker Inc. | Electrical appliance having user proximity sensor |
-
1995
- 1995-06-12 US US08/489,928 patent/US5717188A/en not_active Expired - Fee Related
- 1995-06-16 CA CA002152015A patent/CA2152015C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US5717188A (en) | 1998-02-10 |
| CA2152015A1 (en) | 1996-12-17 |
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| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20150616 |