Tamper resistant temperature controller for a gas-fired heating device
AssigneeRobertshaw Controls Company
InventorDavid Michael Firestine
Life of this patent
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Abstract
A device for preventing the inadvertent rotation of a temperature selection dial associated with the temperature controller of a water heater. The device includes a spring-loaded prong that extends across the face of a rotatable dial so as to prevent rotation of thereof. The force required to pry the prong off of the dial is selected to be greater than what a small child is typically capable of exerting.
Claims17
A set temperature adjustment device associated with a gas controller for a gas-fired heating device, comprising:
- a rotatable dial having raised nubs formed on its face;
- and
- a spring-loaded prong is attached to a gas controller for a gas-fired heating device and for releasably applying pressure against said face of said dial so as to inhibit rotation thereof and to prevent removal thereof.
A safety device for preventing inadvertent rotation of a rotatable dial with which a set temperature in a gas-fired heating device is selected, comprising a rotatable dial positioned on a gas controller valve housing for a gas-fired hearing device and further including a prong element that is attached to said gas controller valve housing for a gas-fired heating device and said prong element extends across a face of said rotatable dial and is biased against said rotatable dial.
Dependencies are inferred from the claim text.