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| Number | Title | Issue Date |
| 6079761 | Retractable grappling hook A retractable grappling hook generally comprising a shaft having a longitnal extending axis and a plurality of hooks pivotally attached to the shaft. Each hook has a longitudinally extending axis and is pivotal to a retracted position such that the axis ... | 06/27/2000 |
| 5131347 | Anchor An improved anchor comprising a central longitudinal stem, or flat bar, two cylindrical bars arranged symmetrically near one end of the flat bar and in a transversal sense, two triangular-shaped flukes each with a tubular base for insertion on the cylidnr... | 07/21/1992 |
| 4576521 | Permanent mooring method and arrangement A permanent mooring method and arrangement for embedding a permanent mooring device in the sea bottom calls for the lowering of the permanent mooring device into the sea until the bottom end contacts the sea bottom, the transmission of fluid under high pr... | 03/18/1986 |
| 4543904 | Collapsible arm anchor Self-clearing anchor (10) having one or more arms (13) hinged to the stem (11), in the vicinity of the crown (12) of the anchor (10), cooperating with biassing member (17) to counteract the rotation of the arms (13), the arms being adapted, when subjected... | 10/01/1985 |
| 4250828 | Marine anchor An anchor in which the flukes pivot on the shank about independent axes wh converge toward the anchor chain end of the shank. Lugs at the base of shank provide for mounting the pivots. The anchor is reversible and has support plates on either side of its... | 02/17/1981 |
| 4094265 | Device in collapsible anchors The disclosure relates to a device in collapsible anchors of the type having two shanks each with a sharp-pointed fluke. The ends of the shanks opposite the flukes are provided with inclined portions with through-holes. A bolt, suitably provided with a ri... | 06/13/1978 |
| 4048946 | Anchor with independent pairs of flukes An anchor construction wherein two pairs of independently operating flukes are pivotally mounted at one end of an elongated shank. Each fluke of the primary pair of flukes lies on an opposite side of the shank and each fluke of the secondary pair of fluke... | 09/20/1977 |
