Mettler-toledo Ag

Mettler-toldedo Ag

Tadeusz Wojnarski

Peter Kunz

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.

Electronic balance with a key for enabling a specific function

A draft protection device for a precision balance includes a base and a stationary rear wall connected to the base. The top of a front pane is connected through two connecting bars to the rear wall. The draft protection device further includes two sliding doors which are slidably mounted in longitudinal guides in the connecting bars and in the base. Racks are mounted in the areas of the upper edge and of the lower edge of at least one of the sliding doors. Pinions connected to each other through a vertically extending shaft mounted at the rear wall mesh with the racks. The shaft may be driven by an electric drive.

Growing community of inventors

Wallisellen, Switzerland

Tadeusz Wojnarski