Universal joint construction for use in anchoring a surface plat

Joints and connections – With distinct fluid or article handling or directing feature – Including port or reservoir communicating with joint

Patent

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Details

403135, 405201, F16C 1100

Patent

active

044227914

ABSTRACT:
The universal joint construction for use at the bottom of a connection between a surface platform and a foundation anchored on the bottom of the sea comprises an outer top ball cup which is adapted to be connected up to the platform and an inner bottom ball cup disposed within the outer top ball cup enclosing the bottom thereof. The inner ball cup has an exterior in slidable engagement with the interior of the outer ball cup and a bell forming an enclosed pressure space is defined between the exterior of the upper cup and the bottom cup. In addition a ring seal bearing is defined between the inner bottom ball cup and the outer top ball cup adjacent the edge of the outer top ball cup. The interior of the bottom ball cup carries a plurality of shoes which bear in sliding engagement with the interior of the top ball cup. The shoes comprise a supporting plate having a substantially trapezoidal contour secured to the inner bottom ball cup and a sliding layer disposed within the contour of the supporting plate which has a border strip edge which extends around the sliding layer. In addition a border sealer is disposed around the exterior of the border strip. A bell is provided which forms an enclosed pressure space between the exterior of the outer top ball cup and the exterior of the inner bottom ball cup. Sliding layers advantageously may be provided with a lubricant by circulating it through passages defined in the inner cup and it advantageously projects higher from the surface of the inner ball cup into sliding engagement with the interior surface of the top ball cup. The shoes are advantageously a plurality of spherical segments of generally trapezoidal form with a smaller one defining almost a triangular configuration disposed between the two adjacent larger sliding layers.

REFERENCES:
patent: 2286122 (1942-06-01), Stapp
patent: 3306636 (1967-02-01), Hereth
patent: 4139221 (1979-02-01), Shotbolt

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