Electric meter including a switch cover lockable in an open posi

Details Electric meter including a switch cover lockable in an open posi Electric meter including a switch cover lockable in an open posi

1994-12-27

1996-05-07

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Meter protection or fraud combatting

16334, G01R 100, E05D 1110

Patent

active

055149596

ABSTRACT:
An electric meter includes a housing, a switch positioned within an opening in the housing, a hinge pin having a first cross-sectional shape and being connected to the housing, and a switch cover having a passageway receiving the hinge pin therein and permitting pivotal movement of said switch cover between a closed position and an open position. The passageway has a second cross-sectional shape cooperating with the first cross-sectional shape of the hinge pin for locking the switch cover in the open position. The hinge pin preferably includes a generally cylindrical shaft and a ridge extending longitudinally thereon to define the first cross-sectional shape. Accordingly, the passageway of the switch cover is preferably defined by a generally cylindrical portion with a first longitudinally extending channel in communication therewith to define the second cross-sectional shape. The passageway may also include a second longitudinal channel cooperating with the ridge to lock the switch cover in the closed position.

REFERENCES:
patent: 3000049 (1961-09-01), Terry
patent: 4188575 (1980-02-01), Palmer et al.
patent: 4978816 (1990-12-01), Castonguay et al.

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