Electronic balance with a key for enabling a specific function

Details Electronic balance with a key for enabling a specific function Electronic balance with a key for enabling a specific function

1993-09-10

1996-01-02

Wong, Peter S.

Weighing scales

With lock or seal

177238, 73 1B, 200 4307, G01G 2302, H01H 2700

Patent

active

054810710

ABSTRACT:
An electronic balance includes a switch mounted on a print in the interior of the balance housing for switching on and off a function which is usually locked, for example, the function "calibrating". The switch is actuated by a prong which is mounted on a closing member and is insertable through an opening in the side wall of the balance housing. A guide member guides the prong along an inclined surface for facilitating the pressing down of the switch button. In the normal condition of operation of the balance, the closing member is turned by 180.degree. and reinserted through the opening, such that the prong projects laterally past the switch in the housing. This configuration prevents incorrect manipulations or damage to the print in the housing because it does not require the insertion of a screwdriver or similar tool for actuating the switch.

REFERENCES:
patent: 509591 (1893-11-01), Braley
patent: 3370137 (1968-02-01), O'Connor
patent: 4454392 (1984-06-01), Rapp et al.
patent: 4586575 (1986-05-01), Muerdter et al.
patent: 5086879 (1992-02-01), Latimer et al.

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