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US 4,906,818 AGranted
Heater safety mechanism
AssigneeToastmaster Inc.
InventorsCharles H. Lumpp, William W. Wolkoff
Life of this patent
Estimating the term…
Abstract
A safety mechanism for disabling a portable room heater. A lever which extends from the heating face of the heater is coupled with a shut-off switch. Movement of the lever resulting from draping of an object over the heater opens the switch and shuts off the heater. A buzzer may be wired in parallel with the switch to provide an audible alarm when the switch opens.
Claims10
A portable heater comprising:
- a housing structure;
- means for emitting heat from a face of said structure;
- a switch coupled with said heat emitting means and movable from a normally closed position to an open position to disable said heat emitting means;
- and
- a mechanical lever extending from said structure to detect draping of an article across the heat emitting face, said lever being operably coupled with said switch and being movable between a retracted storage position adjacent said face and an extended operating position spaced outwardly from said face,
- wherein said switch is moved to the open position when the lever is in the retracted storage position, whereby said heat emitting means is disabled when the lever is in the retracted storage position,
- said lever being operable when in said extended operating position to move said switch to the open position and disable said heat emitting means, whereby said lever is operable to detect draping of an article across the face of the housing structure.
4 more elements
A portable heater comprising:
- a housing structure;
- means for emitting heat from a face of said structure;
- a switch coupled with said heat emitting means said movable from a normally closed position to an open position to disable said heat emitting means;
- and
- a mechanical lever extending from said structure to detect draping of an article across the heat emitting face, said lever being operably coupled with said switch and being movable between a retracted storage position and an extended operating position, said lever including a bar portion which extends substantially across said heat emitting face, wherein said bar portion is spaced outwardly from the heat emitting face when the lever is in the extended operating position and is positioned adjacent the heat emitting face when the lever is in the retracted storage position,
- said lever being operable when in said extended operating position to move said switch to the open position and disable said heat emitting means, whereby said lever is operable to detect draping of an article across the face of the housing structure.
3 more elements
Dependencies are inferred from the claim text.