Marine anchor
US5511506A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 7, 1994 |
| Grant date | Apr 30, 1996 |
| Priority date | — |
| Expiry date | Feb 7, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63B2021/262
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A marine anchor has an anhedral fluke with a shank attached thereto including an anchor line attachment point. A rear plate assembly behind the fluke is inclined at an obtuse angle .alpha. to the fluke and serves to provide a turning moment about the attachment point countering turning moments produced by friction effect on the fluke and the shank and by edge resistance during anchor burial to give improved anchor holding power while soil escapes the passage between the rear assembly and the fluke allows escape of sand and soft mud passing over the fluke. Peripheral edges of the rear assembly are shaped to cause rolling of the anchor to a burial position. An upturned toe portion at the front of the fluke encourages effective anchor operation in clay soils while also facilitating rock gripping by the anchor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.