Abstract: A shield for a universal joint having two yokes is disclosed. Each one of a pair of opposed bell elements is journaled upon the yokes and has a hemispherically shaped outer surface. Each one of a pair of frusto-spherically shaped shoes slidably overlaps one of the bell elements so that the shoes are restrained against axial movement but can rotate relative to the bell elements. A boot spans the shoes with each shoe rotatably disposed between its associated bell element and the boot. The shoes float upon the bell elements within the boot to fully enclose the universal joint as the joint is articulated. The small range of motion of the shield makes it especially suited to operate at wide angles in compact spaces.

Abstract: A guard for a universal joint of the type having a yoke pivotally connected by a cross-link to a housing is disclosed. The guard includes a bell element which has a hemispherically shaped outer surface and is mounted coaxially with the yoke. A boot having first and second end portions and a central portion surrounds the housing with the first end portion having a hemispherically shaped inner surface which mates in sliding contact with the hemispherically shaped surface of the bell element. A bearing surface is within the central portion of the boot and the second end portion is opposite from the first end portion. The bearing surface within the central portion is in sliding contact with a spherical surface which is provided on the housing. As the yoke is articulated relative to the housing, the bearing surface slides along the housing spherical surface to allow the boot to tilt relative to the housing.