Device and method for receiving, and for lifting and lowering a laterally alignable pile board
US5813670A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 10, 1992 |
| Grant date | Sep 29, 1998 |
| Priority date | — |
| Expiry date | Aug 10, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2801/21
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A pile board receiver of a pile lifting device comprising pivotal entrainer hooks having respective pivot points from which the entrainer hooks extend downwardly, the entrainer hooks being vertically guidable and being pivotable in a direction towards a location at which a pile board is receivable in the receiver, each of the entrainer hooks having a hook opening disposed below the respective pivot point and directed towards the location, the respective pivot point being located beyond the location; each of the hooks being formed with a respective prong extending into a region of the receiver wherein a pile board receivable in the receiver is liftable therein; and the method thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.