Snag-resistant anchor

US4134355A · kind A · utility

Inventor

• John Carruthers · Newport, GB

Key dates

• Filing date: Apr 29, 1977
• Grant date: Jan 16, 1979
• Expiry date: Apr 29, 1997

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B63B21/38
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

The invention relates to an anchor which includes an anchor head having flukes thereon and a shaft to which at an outer end thereof an anchor warp is connected. The shaft is pivotally mounted with the head of the anchor and is formed having an elongate primary shaft pivotally connected with the head at an inner end and having a recess therewithin which mounts, in normal operation a secondary shaft which has its inner end connected with the anchor head. An adjustable and resettable release mechanism is mounted on an outer end of the primary shaft in such a position that in normal operation an outer end of the secondary shaft may engage with the release mechanism and be held thereby yet upon more than a predetermined strain being applied to the primary shaft such as on the anchor snagging on the sea bed, the primary shaft is moved pivotally, to disengage the primary shaft from the secondary shaft outer end to permit the primary shaft to pivot freely relative to the anchor head and secondary shaft and enable the primary shaft to move substantially above the anchor head and to pull the anchor head and flukes out backwards from snagged position.