Log lifting device
US4304394A · kind A · utility
Inventors
Key dates
| Filing date | Sep 2, 1980 |
| Grant date | Dec 8, 1981 |
| Priority date | — |
| Expiry date | Sep 2, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S254/01
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A log lifting device is described that includes an upstanding post with an attached flexible strand. The flexible strand, such as a chain, releasably connects the post to a jack. Guide members on the post cause the flexible strand to extend generally parallel to the post for a substantial portion of the length of the post. The flexible strand may include a thin, rigid extension at one end to enable the strand to be threaded under a log to be lifted. The end passed under the log to be lifted is then attached to a jack. The log is raised upwardly generally parallel the length of the support member in response to an upward force applied by the jack.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.