Electrical meter with retractable leads

Details Electrical meter with retractable leads Electrical meter with retractable leads

2007-12-25

2007-12-25

Nguyen, Vinh P. (Department: 2829)

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Plural ranges, scales or registration rates

C324S142000

Reexamination Certificate

active

10898026

ABSTRACT:
An electrical meter10comprises a housing12with a spool14rotatably mounted therein. A first lead cable16and a second lead cable18are wound upon the spool14. A wound spring90is connected to the spool and biases the spool against rotation in a direction that allows the lead cables to be unwound. A first head20and a second head22are respectively included on the end of the first lead cable16and the second lead cable18. The heads abut against the housing and prevent the lead cables from being completely wound upon the spool when the meter is not in use. A circuit board30with electrical measurement circuitry is also mounted within the housing12. The circuit board is electrically connected to a display40positioned on the outside of the housing12.

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