Pressure medium actuated switch
OwnerWilli Quitoschingerinventor
Life of this patent
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Abstract
A push switch construction with an adjustable switching point which includes a piston or membrane adapted to be pressurized by a pressure medium and to actuate a switching element against an action of a restoring spring when a predetermined switching point is reached. The piston or membrane is operationally linked with a pivotably mounted switch lever which is adapted to actuate the switching element. The switch lever is tensioned by a leaf spring through a counter bearing displaced lengthwise relative to the switch lever in a direction opposite to a torque exerted by the piston or membrane.
Claims34
A pressure medium actuated switch for operating a switch element, the switch including actuating means adapted to be acted upon by a pressure medium and actuating a switch element upon reaching a predetermined switching point, characterized in that the actuating means includes a first lever means operatively connected with the switching element, means pivotally mounting the first lever means for movement about a pivot axis extending transversely with respect to a longitudinal axis of said first lever means, an operating element operatively connected with said first lever means and applying a first force thereto, a leaf spring means applying a second force to said first lever means that acts in a direction opposing said first force when it moves, counter bearing means mounted so as to be displaceable by the leaf spring means and transmitting said second force to said first lever means, and moveable means displaceably mounting said leaf spring means and said counter bearing means so as to be displaceable longitudinally of the first lever means toward and away from said pivot axis and so as to alter the magnitude of a torque produced by said second force relative to an opposite torque produced by said first force.
Dependencies are inferred from the claim text.