Pile release mechanism
US4576523A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 25, 1983 |
| Grant date | Mar 18, 1986 |
| Priority date | — |
| Expiry date | Nov 25, 2003 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02B17/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A mechanism for releasing a pre-installed pile attached to a pile guide connected to an offshore platform is supported in the pile and includes pile latch means rotatable from a latch position in which one end extends through an opening in the pile and engages the upper end of the pile guide to a retracted unlatched position in which the entire latch means is located within the pile. The inner end of the latch means is connected to a collapsible compression linkage assembly which when in one position maintains the latch means in its latch position and when moving from the one position to another collapsed position causes the latch means to rotate to its unlatched position within the pile. A slide plate capable of causing the linkage assembly to collapse when moving downwardly from a first position to a second position is releasably held in the first position by shearable means. The linkage assembly includes two pairs of linkage arms, one connecting latch pins to the inner end of the latch means and floating pins and the other connecting the floating pins to pivot pins. The slide plate contains inwardly slanting surfaces which engage the floating pins when the slide plate moves down…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.