Ortopedia Gmbh

F. Knobel Elektro-apparatebau Ag

Fritz Knobel

Ernst Meili

Gerhard Kuhn

An override lock assembly comprises a driven element and a driving element both rotatably arranged on a common fixed shaft. Between the two elements there is arranged a clamping member engaging into both elements. If the two elements rotate with different speeds one of the elements engages with an entraining member into said clamping element and acts upon said clamping element such that it deforms or gets shifted such to frictionally engage into said fixed shaft thus generating a friction force therebetween which decelerates the rotating element.

Override lock assembly for a driving means

A starterless circuit arrangement for the ignition and the operation of one or a number of series connected, low voltage fluorescent lamps which are connected with a stray field transformer coupled with a voltage source. The stray field transformer produces the no-load voltage needed for firing the lamps and possesses heating coils which are connected with the electrodes of the lamps. A cold conductor having markedly positive resistance characteristic is connected in parallel with at least part of the secondary winding of the stray field transformer in order to maintain the voltage applied to the lamp(s) at a value beneath the firing or ignition voltage for such length of time until the electrodes of the lamps are pre-heated.

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Ennenda, Switzerland

Fritz Knobel