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Document Number
US Patent 6598555
Issued Date
July 29, 2003
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Abstract
A marine anchoring arrangement is described wherein a marine anchor (1, 23) is drivingly embedded vertically into a mooring bed (10) by an elongate follower (13), especially by its own weight and that of the follower. The follower (13) has a bottom clevis part (103) adapted to hold detachably the anchor (1) via the anchor shank (2) by means of a fulcrum pin (17) whereby the anchor (1) may swing relative to the bottom part (103). For initial penetration, the anchor (1) is held in a position of minimum forward resistance, specifically with the forward direction F of the fluke (3) parallel to the follower axis (20) and this is achieved by a shear pin (109) between the anchor (1) and the bottom part (103). When the anchor (1) is embedded to a preferred depth (d) specifically at least twice the square root of the maximum projected fluke area (as viewed normal to direction F), the anchor (23) is moved to a position for anchor setting by pulling on an attached anchor cable (4/4A) so causing the shear pin (109) to fracture and the anchor (23) to rotate about the fulcrum axis until arrested by a stop (21) on the follower (13). The follower (13) can then be pulled clear and recovered. The above anchoring arrangement provides a considerably improved anchoring performance in comparison with existing direct embedment arrangements.
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Marine anchors - US Patent 6598555 Drawing
Drawing from US Patent 6598555
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Number of Claims:
27
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Owner
Brupat Limited (Douglas,GB)
Published
July 29, 2003
Application Number
09/806,508
Filed
July 16, 2001
US Classification
114/294   114/295
Int'l Classification
B63B   21/24   (20060101)   B63B   21/26   (20060101)   B63B   21/29   (20060101)   B63B   21/32   (20060101)   B63B   21/38   (20060101)   E02D   7/00   (20060101)   E02D   7/08   (20060101)  
Examiner
Attorney/Law Firm
Priority Data
Oct 30, 1998 [GB] 9825363 Nov 04, 1998 [GB] 9824006
USPTO Field of Search
114/293   114/294   114/295   114/301   114/304  
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