CA1306180C - Outdoor gas cooking appliance - Google Patents
Outdoor gas cooking applianceInfo
- Publication number
- CA1306180C CA1306180C CA000541703A CA541703A CA1306180C CA 1306180 C CA1306180 C CA 1306180C CA 000541703 A CA000541703 A CA 000541703A CA 541703 A CA541703 A CA 541703A CA 1306180 C CA1306180 C CA 1306180C
- Authority
- CA
- Canada
- Prior art keywords
- valve
- actuator
- timed
- tang
- open position
- 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
- 238000010411 cooking Methods 0.000 title description 2
- 239000000446 fuel Substances 0.000 claims description 22
- 230000003213 activating effect Effects 0.000 claims description 6
- 230000004913 activation Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 22
- 230000007246 mechanism Effects 0.000 description 4
- 235000021168 barbecue Nutrition 0.000 description 3
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- ZPEZUAAEBBHXBT-WCCKRBBISA-N (2s)-2-amino-3-methylbutanoic acid;2-amino-3-methylbutanoic acid Chemical compound CC(C)C(N)C(O)=O.CC(C)[C@H](N)C(O)=O ZPEZUAAEBBHXBT-WCCKRBBISA-N 0.000 description 1
- 208000036366 Sensation of pressure Diseases 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Feeding And Controlling Fuel (AREA)
Abstract
There is disclosed a semiautomatic timed shut off valve assembly adapted for use in a gas grill including a normally closed supply valve for supplying gas to one or more manual flow control valves, a manual valve opening member for actuating said supply valve to an opened position, and a timer for causing said supply valve to remain in an open position for a variable preset time. Also disclosed is an arrangement for manually overriding the timer to permit the supply valve to remain open for an indefinite time period.
Description
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O~TDOOR GAS COOKING APPLIANCE
Background and Summary of the Invention The present invention relates generally to a timed shut off valve to be used in propane or natural gas fueled burners and more particularly to an automatic shut-off valve for timed gas shut-off valve for use in a yas grill.
Conventional valves of outdoor gas grills may be turned on or off by actuating a single valve knob. m ese valves can be easily turned on by children playing around the barbecue. In addition, the ,jconventional valves will remain on if left unattended until the gas runs out or the valve is manually turned off. m us, conventional valves, which are left on are wasteful of gas and may create an over heated grill condition, both of ~hich are undesirable.
¦It is an object of the present invention to provide a valve for a gas grill which requires a two step process for opening of the valve, which discourages use of the valve by children.
It is a further object of the present invention to provide a valve for a gas grill which will shut itself off if left unattended for a predetermined time.
It is a further ohject of the present invention to provide a manual override in an automatic shut-off valve assembly for use of the gas grill for extended periods of time.
-The present invention provides a semiautomatic timed shut-off valve assembly adapted for use in a gas barbecue which comprises closed biased valving means which includes gas inlet and gas outlet means. A
manual valve opening means is provided for opening the closed biased ~3~ 62406-73 valve means into a valve opened operational position. A timed engaging means is provided for engaging and retaining the closed biased valving means in the open position for a variable preset time and thereafter releasing the closed biased valving means upon completion of the variable preset time resulting in shutting the burner assembly off.
According to a broad aspect of the invention there is provided a semiautomatic timed shut-off valve assembly adapted for use in a gas grill, comprising: normally closed valve means including fuel inlet means and fuel outlet means; manual valve opening means for opening said valve means, said normally closed valve means including a valve body and a valve member having a shaft portion extending through said valve body, said shaEt portion being aligned with said manual valve opening means, said manual valve opening means opening said valve means by engagement with said shaft, said manual valve opening means including an activation tang for activating said shaft to open said valve means; and timed means for causing said valve means to remain in said open position for a variable preset time and for thereafter 20 releasing said valve means to permit said valve means to close, said timed means including pivotal arm means for movement in-to and out of alignment with said tang for causing said valve means to remain open when in alignment with said tang for a variable preset time and for permitting said valve means to close when out of alignment with said tang, said timed means including activating means for pivoting said pivotal arm means into alignment with said tang for a preset variable time, said activa-ting means including a ~3~ 240~-73 pin on said arm means and cam means operable by said timed means and engageable with said pin, said cam means including a :Eirst cam : having a first camming surface, a second cam having a second camming surface for operatively connecting said cams to said timed means for movement of said cams in a first timer-setting direction from an off position and in an opposite non-timed direction from the oEf position, said first camming surface being operable to move said pin and arm means into alignment with said tang when said manual valve opening means has activated said valve means to its open position and said timed means is manually activa-ted in said timer-setting direction, said second camming surface being operable to move said pin and arm means into alignment with said tang when said manual valve opening means has activated said valve means to its open position and said timed means is manually activated in said un--timed direction.
According to another broad aspect of the invention there is provided a semiautomatic times shut-off valve assembly adapted for use in a gas grill, comprising: normally closed valve means including fuel inlet means and fuel outlet means, said fuel outlet means being connected to a valve for controlling fuel flow to a gas burner; a flrst manually actuatable actuator for opening said valve means, said first actuator including a tang portion extending transversely therefrom; a second separate manually actuatable actuator spaced from said first actuator; and a timed means being actuatable by said second actuator, said timed means including a pivotal arm, said tang portion including a surface thereon for engagement with said pivotal arm, said pivotal arm 2a ~3~ 62406-73 being pivoted for engaging said surface of said tang por-tion for causing said valve means to remain in said open position for a variable preset time and for thereafter releasing said first actuator to permi.t said valve means to close, said second actuator being actuatable only after the actuation of said first actuator, said second actuator actuating said timed means when actuated in a first direction, and retaining said valve in an open position indefinitely when actuated in a second direction.
Accordi.ng to another broad aspect of the invention there is provided a semiautomatic timed shut-off valve assembly adapted for use in a gas grill, comprising: normally closed valve means including fuel inlet means and Euel outlet means, said fuel outlet means being connected to a valve Eor controlling fuel :Elow to a gas burner; a first manually actuatable actuator for opening said valve means said Eirst manually actuatable actuator including a tang portion extending transversely therefrom, said tang portion having an arcuate surface; a second separate manually actuatable actua-tor spaced from said first actuator; and a timed means being actuatable by said second actuator, said timed means including a pivotal arm being pivoted for engaging said arcuate surface of said first actuator for causing said valve means to remain in said open position for a variable preset time and for thereafter releasing said Eirst actuator to permit said valve means to close, said arcuate surface allowing for easy disengagement of said pivotal arm from said tang, said second actuator being actuatable only after the actuation of said first actua-tor, said second actuator actuating said timed means when actuated in a first B
2b direction, and retaining said valve in an open position indefinitely when actuated in a second direction~
Additional advantages and features of the present invention will become apparent from the subse~uent description and the appended claims taken in conjunction with the accompanying drawings.
BRIEF DESCRI,P,TION OF THE ~RAWINGS
Figure 1 is a perspective view of a gas barbecue incorporating the shut-off valve of the present invention;
Figure 2 is a vertical sec-tional view taken along line 2-2 in Figure l;
Figure 3 is a front elevational view, partially in phantom, oE the shut-off valve oE the present invention;
Figure 4 is a vertical sectional view, partially in phantom, taken along line 4-4 in Flgure 3, and showing the shut-off valve in the valve-opened position;
Figure 5 is a view similar to Figure 4 showing the shut-off valve in the valve-closed position;
Figure 6 is a rear elevational view looking along line 6-6 in Figure 5 showing the timer assembly in the valve-closed position;
Figure 7 is a view similar to Figure 5 showing the timer assembly in the valve-opened position.
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Descrip~ion of the P e'es Referrin~ now to the drawings, a shut-off val~e assembly, generally lndicated at 10, is shcwn adapted for use in ~ conventional gas bar~ecue 12 having a fuel source 14. Shut-off valve assembly 10 has manually controlled flow control valves 29 com~ected resFectively, by orifices 18 to venturi tubes 20 which lead to burner 16, as is normal in ~st gas grills, Shut-off valve 10 includes a unique normally-closed valve 22 for controlling the gas supply to flow control valves 29, As shown in Figures 3 - 5, valve 22 includes a fuel mlet passage 24 which connects to the fuel supply 14 and transverse ~uel outlet passages 26 and 27 which æe connected to control valves 29. A tImer 30 is provided for retainin~ the shut-off valve in an open position and allcwing the valve to retu~n to the closed position after a preset variable time.
Figures 4 and 5 show valve 22 in its respective open and closed positions. Valve 22 includes a valve body 32 and a valve element 34. Valve bcdy 32 includes inlet passage 24 and transverse outlet passages 26 and 27. Valve element 34 is operatively positioned between passage 24 and outlet passages 26 ~nd 27 for operatively shutting off or openLng the flow of ~uel through the latter. A manual valve actuator 28 is provided for actuating valve member 34 into its opened position.
~alve actuator 28 is configured in such a manner that the valv~ } r 34 may be locked in its open position for a predeterm med period of time and thereafter released.
Valve body 32 includes a threaded bore 42 for facilitat mg assembly and maintenance of valve element 34. Bore 42 is capped by cap ne=ber 38 and a sealing gasket 39. A compression spring 36 is positioned between an annular groove 52 in the end face 48 of val~e _ 3 .~
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element 34 and cap 38 to bias valve element 34 into the closed position. Valve element 34 has an actuating shaft 46 which passes through the valve body and is sealed with respect thereto by an O-ring 47. Valve element 34 has an annula:r surface 54 on which is disposed an O-ring adapted to sealingly engage a valve seat 40 in valve body 32~ to block the Flow of gas from passage 24 to passages 26 and 27.
Shut-off valve 22 is manually opened by inward pres-sure from an actuatox 28 having at one end a push button 60 connected by an intermediate stem 62 to a tang 64 having an end surface 66 engaging the free end o~ sha~t 46.
Timer 30 includes a timer mechanism 82 actuated by a manual timer handle 84. Timer mechanism 82 operates such that when push button 60 is moved inwardly to open valve 22 and handle 84 is turned from its off position in a first direction to set ; the timer, a locking arm 70 is moved into a position in alignment with tang 64 thereby holding actuator 28 and valve 22 in the open position. Timer mechanism 82 runs for a preset time until arm 70 is retracted thus releasiny actuator 28 and allowing valve 22 to return to the closed position. The timer mechanism 82 is similar to those disclosed in United States Patent Nos. 3,879,587 and 2,261,989. Other timers readily known to those skilled in the art may also be used in connection with the present invention.
The operation of locking arm 70 is more particularly ~3~6~
shown in Figures 6 and 7. The locking arm 70 is pivoted about a fastener 76 by camming an actuating pin 78 thereon. Arm 70 is normally biased away from tang 64 of actuator 28 by a tension spring 72, and is moved into position for locking valve 22 in the valve-open position by movement of -4a-~ J G
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circular cams 75 and 73 in the follow mg manner. Carn 73 is connected to timer handle 84 ar~ the interval tImer mechani.srn by a shaft 81. C~n 73 is operatively connect~d to cam 75 by a lost motion device including a pLn 85 projecting fr~n cam 73 into a slot 87 Ln c~n 75. Cam 73 includes a camming surface 80 for camming the actuation pin 78 ou~rdly to a valve-holding-open position when handle 84 is tllrned in a ~irst timer ~etting direction. In the valve-closed condition pin 78 is disposed in a slot 79 in cam 75. Movement of carn 73 also moves pin ~5 s~ng slot 87 and provides a corresponding movement of cam 75 aftex p~n 78 has been cammd all the way out of 510t 79. Pin 78 engages t~ the outer surface of cam 75 as cam 73 and then cam 75 begin ti~d ~ation in an opposite direction thereby holding p m 78 and arrn 70 in a~ignment with tang 64 of actuating r~mber 28, to hold valve 22 in ~he apen position.
Thereafter, when pin 78 reaches slot 79 the spring fo~é ~ arm 70 causes it to m~ve out of alignment with tang 64 as pin 78 d~ops lnto slot 79, thereby permitting spring 36 to move valve el~m~* 34 and acutator 28 outwardly and shutting off the supply of gas.
e valve assembly may also be manuall~ act~ated for an indetermir~te period of tIme by actuating push bu~t~n 60 ~nwardly to open valve 22 and th~n rotating handle 84 from its ~ff p~sa~ion in an opposite non-tirmng direction. This rrovement causes pin 78 tQ be ca~med outwardly and into engagement with notch 86, by c~ming sur~ace 88, on cam 75, thus moving and holding anm 70 to a valve-holdi~g-open position.
Valve 22 stays open until handle 84 i~ manually ~c*at0d in an opposite direction back to its off position and mov mg pin 78 o~t of engagement with notch 86. Spxing 72 is then free to ~ve a~m 70 to its valve-closed position, thereby allowing valve ele~ t 34 to cl~se.
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As can be visualized rotation of handle 84 cannot be accomplished unless push button 60 is ma~ually actuated inwardly due to the fact that the side of tang 64 blocks mo~ement of ~rm 70 when actuator 28 is in its valve-off position.
; While it will be apparent that the preferred embodiment the invention disclosed is well calculated to prov:ide the advantages and features abcve stated, it will be appreciated that the invention is suspectible to m~dification, v~riation and change without departing from . the proper scope or fair meaning of the subjoined claims.
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O~TDOOR GAS COOKING APPLIANCE
Background and Summary of the Invention The present invention relates generally to a timed shut off valve to be used in propane or natural gas fueled burners and more particularly to an automatic shut-off valve for timed gas shut-off valve for use in a yas grill.
Conventional valves of outdoor gas grills may be turned on or off by actuating a single valve knob. m ese valves can be easily turned on by children playing around the barbecue. In addition, the ,jconventional valves will remain on if left unattended until the gas runs out or the valve is manually turned off. m us, conventional valves, which are left on are wasteful of gas and may create an over heated grill condition, both of ~hich are undesirable.
¦It is an object of the present invention to provide a valve for a gas grill which requires a two step process for opening of the valve, which discourages use of the valve by children.
It is a further object of the present invention to provide a valve for a gas grill which will shut itself off if left unattended for a predetermined time.
It is a further ohject of the present invention to provide a manual override in an automatic shut-off valve assembly for use of the gas grill for extended periods of time.
-The present invention provides a semiautomatic timed shut-off valve assembly adapted for use in a gas barbecue which comprises closed biased valving means which includes gas inlet and gas outlet means. A
manual valve opening means is provided for opening the closed biased ~3~ 62406-73 valve means into a valve opened operational position. A timed engaging means is provided for engaging and retaining the closed biased valving means in the open position for a variable preset time and thereafter releasing the closed biased valving means upon completion of the variable preset time resulting in shutting the burner assembly off.
According to a broad aspect of the invention there is provided a semiautomatic timed shut-off valve assembly adapted for use in a gas grill, comprising: normally closed valve means including fuel inlet means and fuel outlet means; manual valve opening means for opening said valve means, said normally closed valve means including a valve body and a valve member having a shaft portion extending through said valve body, said shaEt portion being aligned with said manual valve opening means, said manual valve opening means opening said valve means by engagement with said shaft, said manual valve opening means including an activation tang for activating said shaft to open said valve means; and timed means for causing said valve means to remain in said open position for a variable preset time and for thereafter 20 releasing said valve means to permit said valve means to close, said timed means including pivotal arm means for movement in-to and out of alignment with said tang for causing said valve means to remain open when in alignment with said tang for a variable preset time and for permitting said valve means to close when out of alignment with said tang, said timed means including activating means for pivoting said pivotal arm means into alignment with said tang for a preset variable time, said activa-ting means including a ~3~ 240~-73 pin on said arm means and cam means operable by said timed means and engageable with said pin, said cam means including a :Eirst cam : having a first camming surface, a second cam having a second camming surface for operatively connecting said cams to said timed means for movement of said cams in a first timer-setting direction from an off position and in an opposite non-timed direction from the oEf position, said first camming surface being operable to move said pin and arm means into alignment with said tang when said manual valve opening means has activated said valve means to its open position and said timed means is manually activa-ted in said timer-setting direction, said second camming surface being operable to move said pin and arm means into alignment with said tang when said manual valve opening means has activated said valve means to its open position and said timed means is manually activated in said un--timed direction.
According to another broad aspect of the invention there is provided a semiautomatic times shut-off valve assembly adapted for use in a gas grill, comprising: normally closed valve means including fuel inlet means and fuel outlet means, said fuel outlet means being connected to a valve for controlling fuel flow to a gas burner; a flrst manually actuatable actuator for opening said valve means, said first actuator including a tang portion extending transversely therefrom; a second separate manually actuatable actuator spaced from said first actuator; and a timed means being actuatable by said second actuator, said timed means including a pivotal arm, said tang portion including a surface thereon for engagement with said pivotal arm, said pivotal arm 2a ~3~ 62406-73 being pivoted for engaging said surface of said tang por-tion for causing said valve means to remain in said open position for a variable preset time and for thereafter releasing said first actuator to permi.t said valve means to close, said second actuator being actuatable only after the actuation of said first actuator, said second actuator actuating said timed means when actuated in a first direction, and retaining said valve in an open position indefinitely when actuated in a second direction.
Accordi.ng to another broad aspect of the invention there is provided a semiautomatic timed shut-off valve assembly adapted for use in a gas grill, comprising: normally closed valve means including fuel inlet means and Euel outlet means, said fuel outlet means being connected to a valve Eor controlling fuel :Elow to a gas burner; a first manually actuatable actuator for opening said valve means said Eirst manually actuatable actuator including a tang portion extending transversely therefrom, said tang portion having an arcuate surface; a second separate manually actuatable actua-tor spaced from said first actuator; and a timed means being actuatable by said second actuator, said timed means including a pivotal arm being pivoted for engaging said arcuate surface of said first actuator for causing said valve means to remain in said open position for a variable preset time and for thereafter releasing said Eirst actuator to permit said valve means to close, said arcuate surface allowing for easy disengagement of said pivotal arm from said tang, said second actuator being actuatable only after the actuation of said first actua-tor, said second actuator actuating said timed means when actuated in a first B
2b direction, and retaining said valve in an open position indefinitely when actuated in a second direction~
Additional advantages and features of the present invention will become apparent from the subse~uent description and the appended claims taken in conjunction with the accompanying drawings.
BRIEF DESCRI,P,TION OF THE ~RAWINGS
Figure 1 is a perspective view of a gas barbecue incorporating the shut-off valve of the present invention;
Figure 2 is a vertical sec-tional view taken along line 2-2 in Figure l;
Figure 3 is a front elevational view, partially in phantom, oE the shut-off valve oE the present invention;
Figure 4 is a vertical sectional view, partially in phantom, taken along line 4-4 in Flgure 3, and showing the shut-off valve in the valve-opened position;
Figure 5 is a view similar to Figure 4 showing the shut-off valve in the valve-closed position;
Figure 6 is a rear elevational view looking along line 6-6 in Figure 5 showing the timer assembly in the valve-closed position;
Figure 7 is a view similar to Figure 5 showing the timer assembly in the valve-opened position.
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Descrip~ion of the P e'es Referrin~ now to the drawings, a shut-off val~e assembly, generally lndicated at 10, is shcwn adapted for use in ~ conventional gas bar~ecue 12 having a fuel source 14. Shut-off valve assembly 10 has manually controlled flow control valves 29 com~ected resFectively, by orifices 18 to venturi tubes 20 which lead to burner 16, as is normal in ~st gas grills, Shut-off valve 10 includes a unique normally-closed valve 22 for controlling the gas supply to flow control valves 29, As shown in Figures 3 - 5, valve 22 includes a fuel mlet passage 24 which connects to the fuel supply 14 and transverse ~uel outlet passages 26 and 27 which æe connected to control valves 29. A tImer 30 is provided for retainin~ the shut-off valve in an open position and allcwing the valve to retu~n to the closed position after a preset variable time.
Figures 4 and 5 show valve 22 in its respective open and closed positions. Valve 22 includes a valve body 32 and a valve element 34. Valve bcdy 32 includes inlet passage 24 and transverse outlet passages 26 and 27. Valve element 34 is operatively positioned between passage 24 and outlet passages 26 ~nd 27 for operatively shutting off or openLng the flow of ~uel through the latter. A manual valve actuator 28 is provided for actuating valve member 34 into its opened position.
~alve actuator 28 is configured in such a manner that the valv~ } r 34 may be locked in its open position for a predeterm med period of time and thereafter released.
Valve body 32 includes a threaded bore 42 for facilitat mg assembly and maintenance of valve element 34. Bore 42 is capped by cap ne=ber 38 and a sealing gasket 39. A compression spring 36 is positioned between an annular groove 52 in the end face 48 of val~e _ 3 .~
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element 34 and cap 38 to bias valve element 34 into the closed position. Valve element 34 has an actuating shaft 46 which passes through the valve body and is sealed with respect thereto by an O-ring 47. Valve element 34 has an annula:r surface 54 on which is disposed an O-ring adapted to sealingly engage a valve seat 40 in valve body 32~ to block the Flow of gas from passage 24 to passages 26 and 27.
Shut-off valve 22 is manually opened by inward pres-sure from an actuatox 28 having at one end a push button 60 connected by an intermediate stem 62 to a tang 64 having an end surface 66 engaging the free end o~ sha~t 46.
Timer 30 includes a timer mechanism 82 actuated by a manual timer handle 84. Timer mechanism 82 operates such that when push button 60 is moved inwardly to open valve 22 and handle 84 is turned from its off position in a first direction to set ; the timer, a locking arm 70 is moved into a position in alignment with tang 64 thereby holding actuator 28 and valve 22 in the open position. Timer mechanism 82 runs for a preset time until arm 70 is retracted thus releasiny actuator 28 and allowing valve 22 to return to the closed position. The timer mechanism 82 is similar to those disclosed in United States Patent Nos. 3,879,587 and 2,261,989. Other timers readily known to those skilled in the art may also be used in connection with the present invention.
The operation of locking arm 70 is more particularly ~3~6~
shown in Figures 6 and 7. The locking arm 70 is pivoted about a fastener 76 by camming an actuating pin 78 thereon. Arm 70 is normally biased away from tang 64 of actuator 28 by a tension spring 72, and is moved into position for locking valve 22 in the valve-open position by movement of -4a-~ J G
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circular cams 75 and 73 in the follow mg manner. Carn 73 is connected to timer handle 84 ar~ the interval tImer mechani.srn by a shaft 81. C~n 73 is operatively connect~d to cam 75 by a lost motion device including a pLn 85 projecting fr~n cam 73 into a slot 87 Ln c~n 75. Cam 73 includes a camming surface 80 for camming the actuation pin 78 ou~rdly to a valve-holding-open position when handle 84 is tllrned in a ~irst timer ~etting direction. In the valve-closed condition pin 78 is disposed in a slot 79 in cam 75. Movement of carn 73 also moves pin ~5 s~ng slot 87 and provides a corresponding movement of cam 75 aftex p~n 78 has been cammd all the way out of 510t 79. Pin 78 engages t~ the outer surface of cam 75 as cam 73 and then cam 75 begin ti~d ~ation in an opposite direction thereby holding p m 78 and arrn 70 in a~ignment with tang 64 of actuating r~mber 28, to hold valve 22 in ~he apen position.
Thereafter, when pin 78 reaches slot 79 the spring fo~é ~ arm 70 causes it to m~ve out of alignment with tang 64 as pin 78 d~ops lnto slot 79, thereby permitting spring 36 to move valve el~m~* 34 and acutator 28 outwardly and shutting off the supply of gas.
e valve assembly may also be manuall~ act~ated for an indetermir~te period of tIme by actuating push bu~t~n 60 ~nwardly to open valve 22 and th~n rotating handle 84 from its ~ff p~sa~ion in an opposite non-tirmng direction. This rrovement causes pin 78 tQ be ca~med outwardly and into engagement with notch 86, by c~ming sur~ace 88, on cam 75, thus moving and holding anm 70 to a valve-holdi~g-open position.
Valve 22 stays open until handle 84 i~ manually ~c*at0d in an opposite direction back to its off position and mov mg pin 78 o~t of engagement with notch 86. Spxing 72 is then free to ~ve a~m 70 to its valve-closed position, thereby allowing valve ele~ t 34 to cl~se.
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As can be visualized rotation of handle 84 cannot be accomplished unless push button 60 is ma~ually actuated inwardly due to the fact that the side of tang 64 blocks mo~ement of ~rm 70 when actuator 28 is in its valve-off position.
; While it will be apparent that the preferred embodiment the invention disclosed is well calculated to prov:ide the advantages and features abcve stated, it will be appreciated that the invention is suspectible to m~dification, v~riation and change without departing from . the proper scope or fair meaning of the subjoined claims.
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Claims (4)
1. A semiautomatic timed shut-off valve assembly adapted for use in a gas grill, comprising:
normally closed valve means including fuel inlet means and fuel outlet means;
manual valve opening means for opening said valve means, said normally closed valve means including a valve body and a valve member having a shaft portion extending through said valve body, said shaft portion being aligned with said manual valve opening means, said manual valve opening means opening said valve means by engagement with said shaft, said manual valve opening means including an activation tang for activating said shaft to open said valve means; and timed means for causing said valve means to remain in said open position for a variable preset time and for thereafter releasing said valve means to permit said valve means to close, said timed means including pivotal arm means for movement into and out of alignment with said tang for causing said valve means to remain open when in alignment with said tang for a variable preset time and for permitting said valve means to close when out of alignment with said tang, said timed means including activating means for pivoting said pivotal arm means into alignment with said tang for a preset variable time, said activating means including a pin on said arm means and cam means operable by said timed means and engageable with said pin, said cam means including a first cam having a first camming surface, a second cam having a second camming surface for operatively connecting said cams to said timed means for movement of said cams in a first timer-setting direction from an off position and in an opposite non-timed direction from the off position, said first camming surface being operable to move said pin and arm means into alignment with said tang when said manual valve opening means has activated said valve means to its open position and said timed means is manually activated in said timer-setting direction, said second camming surface being operable to move said pin and arm means into alignment with said tang when said manual valve opening means has activated said valve means to its open position and said timed means is manually activated in said un-timed direction.
normally closed valve means including fuel inlet means and fuel outlet means;
manual valve opening means for opening said valve means, said normally closed valve means including a valve body and a valve member having a shaft portion extending through said valve body, said shaft portion being aligned with said manual valve opening means, said manual valve opening means opening said valve means by engagement with said shaft, said manual valve opening means including an activation tang for activating said shaft to open said valve means; and timed means for causing said valve means to remain in said open position for a variable preset time and for thereafter releasing said valve means to permit said valve means to close, said timed means including pivotal arm means for movement into and out of alignment with said tang for causing said valve means to remain open when in alignment with said tang for a variable preset time and for permitting said valve means to close when out of alignment with said tang, said timed means including activating means for pivoting said pivotal arm means into alignment with said tang for a preset variable time, said activating means including a pin on said arm means and cam means operable by said timed means and engageable with said pin, said cam means including a first cam having a first camming surface, a second cam having a second camming surface for operatively connecting said cams to said timed means for movement of said cams in a first timer-setting direction from an off position and in an opposite non-timed direction from the off position, said first camming surface being operable to move said pin and arm means into alignment with said tang when said manual valve opening means has activated said valve means to its open position and said timed means is manually activated in said timer-setting direction, said second camming surface being operable to move said pin and arm means into alignment with said tang when said manual valve opening means has activated said valve means to its open position and said timed means is manually activated in said un-timed direction.
2. A semiautomatic timed shut-off valve assembly adapted for use in a gas grill, comprising:
normally closed valve means including fuel inlet means and fuel outlet means, said fuel outlet means being connected to a valve for controlling fuel flow to a gas burner;
a first manually actuatable actuator for opening said valve means, said first actuator including a tang portion extending transversely therefrom;
a second separate manually actuatable actuator spaced from said first actuator; and a timed means being actuatable by said second actuator, said timed means including a pivotal arm, said tang portion including a surface thereon for engagement with said pivotal arm, said pivotal arm being pivoted for engaging said surface of said tang portion for causing said valve means to remain in said open position for a variable preset time and for thereafter releasing said first actuator to permit said valve means to close, said second actuator being actuatable only after the actuation of said first actuator, said second actuator actuating said timed means when actuated in a first direction, and retaining said valve in an open position indefinitely when actuated in a second direction.
normally closed valve means including fuel inlet means and fuel outlet means, said fuel outlet means being connected to a valve for controlling fuel flow to a gas burner;
a first manually actuatable actuator for opening said valve means, said first actuator including a tang portion extending transversely therefrom;
a second separate manually actuatable actuator spaced from said first actuator; and a timed means being actuatable by said second actuator, said timed means including a pivotal arm, said tang portion including a surface thereon for engagement with said pivotal arm, said pivotal arm being pivoted for engaging said surface of said tang portion for causing said valve means to remain in said open position for a variable preset time and for thereafter releasing said first actuator to permit said valve means to close, said second actuator being actuatable only after the actuation of said first actuator, said second actuator actuating said timed means when actuated in a first direction, and retaining said valve in an open position indefinitely when actuated in a second direction.
3. The semiautomatic shut-off valve of Claim 2 wherein the first manually actuatable actuator actuates said valve in a first direction and said pivotal arm pivots in a plane substantially perpendicular to said first direction for engaging said surface of said first manually actuatable actuator.
4. A semiautomatic timed shut-off valve assembly adapted for use in a gas grill, comprising:
normally closed valve means including fuel inlet means and fuel outlet means r said fuel outlet means being connected to a valve for controlling fuel flow to a gas burner;
a first manually actuatable actuator for opening said valve means said first manually actuatable actuator including a tang portion extending transversely therefrom, said tang portion having an arcuate surface;
a second separate manually actuatable actuator spaced from said first actuator; and a timed means being actuatable by said second actuator, said timed means including a pivotal arm being pivoted for engaging said arcuate surface of said first actuator for causing said valve means to remain in said open position for a variable preset time and for thereafter releasing said first actuator to permit said valve means to close, said arcuate surface allowing for easy disengagement of said pivotal arm from said tang, said second actuator being actuatable only after the actuation of said first actuator, said second actuator actuating said timed means when actuated in a first direction, and retaining said valve in an open position indefinitely when actuated in a second direction.
normally closed valve means including fuel inlet means and fuel outlet means r said fuel outlet means being connected to a valve for controlling fuel flow to a gas burner;
a first manually actuatable actuator for opening said valve means said first manually actuatable actuator including a tang portion extending transversely therefrom, said tang portion having an arcuate surface;
a second separate manually actuatable actuator spaced from said first actuator; and a timed means being actuatable by said second actuator, said timed means including a pivotal arm being pivoted for engaging said arcuate surface of said first actuator for causing said valve means to remain in said open position for a variable preset time and for thereafter releasing said first actuator to permit said valve means to close, said arcuate surface allowing for easy disengagement of said pivotal arm from said tang, said second actuator being actuatable only after the actuation of said first actuator, said second actuator actuating said timed means when actuated in a first direction, and retaining said valve in an open position indefinitely when actuated in a second direction.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US93023386A | 1986-11-13 | 1986-11-13 | |
| US930,233 | 1986-11-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1306180C true CA1306180C (en) | 1992-08-11 |
Family
ID=25459076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000541703A Expired - Lifetime CA1306180C (en) | 1986-11-13 | 1987-07-09 | Outdoor gas cooking appliance |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1306180C (en) |
-
1987
- 1987-07-09 CA CA000541703A patent/CA1306180C/en not_active Expired - Lifetime
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| Date | Code | Title | Description |
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| MKLA | Lapsed |