Safety device
AssigneeJordan Shaw Limited
InventorGary Owen Shaw
Life of this patent
Estimating the term…
Abstract
A safety device for regulating the supply of electricity and/or fuel to an appliance. Electricity and/or fuel may be supplied to an appliance for a period of time responsive to a user operating a user operable control means, such as a button. The safety device will cut off the supply of electricity and/or fuel after a first period of time unless the user operable control means is operated again to extend the period of time for which the regulator means allows the supply of electricity and/or fuel. Thus, the user must periodically operate the user operable control means if the appliance is to continue functioning. The safety device may function differently at different times of the day. The safety device is particularly useful with electric or fuel burning cookers, to reduce the risk of fire when the cooker is inadvertently left unattended.
Claims25
A safety device comprising regulator means for regulating the supply of electricity and/or fuel to an appliance, which regulator means by default cuts off the supply of electricity and/or fuel, and user operable control means which, responsive to a first operation of the user operable control means by a user, causes the regulator means to allow the supply of electricity and/or fuel for a predetermined first period of time, wherein the user operable control means is configured to extend the predetermined first period of time for which the regulator means allows electricity and/or fuel to be supplied responsive to the user operating the user operable control means again, wherein the response of the user operable control means to operation by the user also depends on the time of day such that the predetermined first period of time varies depending upon the time of day that the user operable control means is operated.
A safety device comprising:
- a regulator configured to regulate the supply of electricity to an appliance, and configured to, by default, cut off the supply of electricity;
- and
- a user operable controller configured to:
- cause, responsive to a first operation of the user operable controller by a user, the regulator to allow the supply of electricity for a predetermined first period of time,
- keep track of the time of day,
- extend the period of time for which the regulator allows electricity to be supplied responsive to the user operating the user operable controller again, subsequently to the first operation by the user, and
- respond to operation by the user depending on the time of day such that the predetermined first period of time varies depending upon the time of day that the user operable control controller is operated.
A safety device comprising:
- a regulator configured to regulate the supply of fuel to an appliance, and configured to, by default, cut off the supply of fuel;
- and
- a user operable controller configured to:
- cause, responsive to a first operation of the user operable controller by a user, the regulator to allow the supply of fuel for a first predetermined period of time,
- keep track of the time of day,
- extend the period of time for which the regulator allows fuel to be supplied responsive to the user operating the user operable controller again, subsequently to the first operation by the user, and
- respond to operation by the user depending on the time of day such that the predetermined first period of time varies depending upon the time of day that the user operable controller is operated.
A safety device comprising regulator means for regulating the supply of electricity and/or fuel to an appliance, which regulator means by default cuts off the supply of electricity and/or fuel, and user operable control means which, responsive to a first operation of the user operable control means by a user, causes the regulator means to allow the supply of electricity and/or fuel for a first period of time, wherein the user operable control means is configured to extend the period of time for which the regulator means allows electricity and/or fuel to be supplied responsive to the user operating the user operable control means again, wherein the regulator means allows electricity and/or fuel to be supplied responsive to operation by a user of the user operable control means only at certain times of the day.
Dependencies are inferred from the claim text.