SHIPBOARD ANCHOR FOR DRAWING PENETRATION (VERSION) Russian patent published in 2000 - IPC

FIELD: water transport; manufacture of shipboard anchors for drawing penetration into bottom. SUBSTANCE: anchor has palm and shank. According to first and second versions, shank has two separate points for attachment of first and second anchor chains. Provision is made for orientation of anchor in forming straight lines in first and second directions which form angles (α) and (β) respectively with line of intersection of flat of palm with longitudinal plane of symmetry. Angle (β) is more than angle (α) and area of palm projected in second direction exceeds that in first one to ensure limiting load by anchor embedded in soil at tractive force applied to second anchor chain and point of its attachment. According to second version, anchor chain is secured to palm near or behinds its centroid. Shank has swinging portion with point of attachment of anchor chain. This point may move between straight lines of first and second directions of anchor chain and may lie on these lines at swinging of part of shank around transversal axis of swinging. Anchor chain exerts pulling action on anchor when point of attachment of chain lies on line of first direction used for drawing penetration. Magnitudes and orientation of opening of angles (α) and (β) as well as relationship of areas of palm projected in first and second directions is similar to that in first version, thus ensuring limiting load by anchor. EFFECT: improved service characteristics of anchor. 22 cl, 17 dwg