Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Plural inputs
Patent
1993-01-08
1993-12-14
Nguyen, Vinh
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Plural inputs
324103R, G01R 120
Patent
active
052706397
ABSTRACT:
A time of use register for use in an electronic watthour meter is formed of a three piece interlocking construction without the use of separate fasteners or the use of tools for assembly. The TOU register includes a front cover, a rear cover and a resilient clip, each of these components having various features to provide firm containment of a PC board and an LCD within the register. The front cover includes a window within which the LCD is positioned and a connector slot within which a resilient electrical conductor strip is situated. The electrical conductor strip provides communication between the PC board, which has a contact array at one edge of the board, and the LCD array, which also has a complementary contact array at its upper edge. The rear cover encloses the rear and part of the sides of the TOU register and includes a number of stops for providing uniform pressure against the PC board to hold it in position. The front and rear covers include a number of catches upon which the resilient clip, and particularly a number of notches on the resilient clip, is snapped. When the resilient clip is snapped onto the notches of the front and rear covers, a specific amount of pressure is exerted against the components contained within the TOU register. The pressure is calibrated to provide a uniform compression of the resilient connector strip to insure a gas-tight electrical connection between the PC board and the LCD array.
REFERENCES:
patent: 4202588 (1980-05-01), Dalamangas et al.
patent: 4783623 (1988-11-01), Edwards et al.
patent: 5066906 (1991-11-01), Moore
Landis & Gyr Metering Inc.
Nguyen Vinh
LandOfFree
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