Abstract: The hinge comprises a compression spring, which is adapted to balance the weight of a hinged leaf, such as a flap, lid or door. The compression spring is prestressed and bears at one end on the stationary hinge member and at the other end acts by means of a spring guide on a second hinge member, which is attached to the hinged leaf. The spring guide is supported at one end by two limbs of the stationary hinge member and at the other end by a slidable pin, which is mounted in cam slots, which are respectively provided in the limbs of the stationary hinge member and in a control lever. The latter is pivoted at its other end to the movable hinge member. The cam slots have such a configuration that the excursion of the spring resulting from the pivotal movement of the control lever is minimized.

Abstract: A spring-biased hinge for the weight compensation of two structural members that are to be pivotably interconnected by means of the hinge for pivotal motion about a horizontal axis, particularly for counter-balancing the weight of a lid pivotable with respect to a freezer chest, comprises first and second hinge members pivotally interconnected by a hinge pin and securable one to each of the structural members. A precompressed spring is supported at one end by the first hinge member and at its other end by a guide rod for the spring. The guide rod is axially displaceable and acts on the second hinge member. At its said one end, the spring is supported by means of a cradle member which can rock on a bearing edge provided on the first hinge member, brake shoes for acting on the guide rod being interposed between said one end of the spring and the cradle member.