Patent ID: 7719230

Claim:
A kit comprising: (a) a plurality of power tools having power tool housings of substantially similar constructions, power tools in the kit being configured to operate at an operating voltage different from each other; (b) a plurality of receivers having receiver housings of substantially similar constructions, the receivers being configured for providing power to the power tools, the plurality of receivers including (i) a first receiver including a power source configured to provide a first output voltage, (ii) a second receiver including a power source configured to provide a second output voltage greater than the first output voltage, (iii) a third receiver including a power source configured to provide a third output voltage greater than the second output voltage, and wherein the first receiver is configured to engage and provide power to power tools having an operating voltage equal to the first output, second output and third output, wherein the second receiver is configured to engage and provide power to power tools having an operating voltage equal to the second output and third output but not to engage and provide power to power tools having an operating voltage equal to the first output, and wherein the third receiver is configured to engage and provide power to power tools having an operating voltage equal to the third output but not to engage and provide power to power tools having an operating voltage equal to the first output and not to engage and provide power to power tools having an operating voltage equal to the second output.