Power supply system for battery operated devices
AssigneeS-B Power Tool Company
InventorPeter W. Neumann
Life of this patent
Estimating the term…
Abstract
A power supply converts an AC input voltage to a DC output voltage and supplies the DC output voltage to power devices. The power supply includes a housing, a transformer provided in the housing for reducing a voltage level of the AC input voltage and a thermal protection device thermally connected between the AC input voltage and the transformer for electrically disconnecting the AC input voltage from the transformer when activated responsive to the transformer exceeding a predetermined temperature. A rectifier is electrically connected to the transformer for rectifying the AC input voltage reduced by the transformer into the DC output voltage which is supplied to the power devices.
Claims57
A power supply apparatus for converting an AC input voltage to a DC output voltage and supplying the DC output voltage to a power tool, said apparatus comprising:
- a housing constructed and adapted to be removably coupled to the power tool;
- transforming means provided in said housing and adapted to be electrically connected to the AC input voltage for reducing a voltage level of the AC input voltage;
- first thermal protection means thermally connected to said transforming means for electrically disconnecting the AC input voltage from said transforming means when activated responsive to said transforming means exceeding a predetermined temperature;
- and
- means electrically connected to said transforming means for rectifying the AC input voltage reduced by said transforming means into the DC output voltage which is adapted to be supplied to the power tool.
A power supply apparatus for converting an AC input voltage to a DC output voltage and supplying the DC output voltage to a power tool, said apparatus comprising:
- a housing;
- transforming means provided in said housing and adapted to be electrically connected to the AC input voltage for reducing a voltage level of the input voltage;
- first thermal protection means thermally connected to said transforming means for electrically disconnecting the AC input voltage from said transforming means when activated responsive to said transforming means exceeding a predetermined temperature;
- means electrically connected to said transforming means for rectifying the AC input voltage reduced by said transforming means into the DC output voltage which is supplied to the power tool;
- and
- an adapter electrically connected to said housing and constructed and adapted to be removably coupled to a battery compartment of the power tool for supplying the DC output voltage produced by said rectifying means to the power tool.
A power supply apparatus for converting an AC input voltage to a DC output voltage and supplying the DC output voltage to a power tool, said apparatus comprising:
- a housing constructed and adapted to be removably coupled to the power tool;
- transforming means provided in said housing and adapted to be electrically connected to the AC input voltage for reducing a voltage level of the AC input voltage;
- first thermal protection means thermally connected to said transforming means for electrically disconnecting the AC input voltage from said transforming means when activated responsive to said transforming means exceeding a predetermined temperature;
- latching means connected between said AC input voltage and said transforming means for allowing said AC input voltage to be applied to said transforming means when said latching means is activated after said first thermal protection means has been deactivated;
- and
- means electrically connected to said transforming means for rectifying the AC input voltage reduced by said transforming means into the DC output voltage which is adapted to be supplied to the power tool.
A power supply apparatus for converting an AC input voltage to a DC output voltage and supplying the DC output voltage to a power tool, said apparatus comprising:
- a housing;
- transforming means provided in said housing and adapted to be electrically connected to the AC input voltage for reducing a voltage level of the input voltage;
- first thermal protection means thermally connected to said transforming means for electrically disconnecting the AC input voltage from said transforming means when activated responsive to said transforming means exceeding a predetermined temperature;
- latching means connected between said AC input voltage and said transforming means for allowing said input voltage to be applied to said transforming means when said latching means is activated after said first thermal protection means has been deactivated;
- means electrically connected to said transforming means for rectifying the AC input voltage reduced by said transforming means into the DC output voltage which is supplied to the power tool;
- and
- an adapter electrically connected to said housing and constructed and adapted to be removably coupled to a battery compartment of the power tool for supplying the DC output voltage produced by said rectifying means to the power tool.
Dependencies are inferred from the claim text.