Tensioning apparatus for a lashing strap
US5205020A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 4, 1992 |
| Grant date | Apr 27, 1993 |
| Priority date | — |
| Expiry date | Mar 4, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T24/2175
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A tensioning apparatus for the step-wise tensioning and non-stepped releasing of a lashing strap includes a frame (1; 100), a pivot lever (2) having two pivot arms (16, 16'), and a ratchet mechanism that includes ratchet wheels (3, 3') and locking pawls (5, 5'; 105, 105'). By using a plurality of locking pawls (5, 5'; 105, 105'), the tensioning apparatus is able to absorb a greater lashing force or to tension the lashing strap in locking steps which differ from the tooth pitch t. To release the lashing strap, cams (40) on the pivot arms (16, 16') of the pivot lever (2) move the locking pawls and thus the ratchet mechanism to a disengaged position. The structural height of the tensioning apparatus and the number of components required for it may be reduced by using curved locking pawls (5, 5'; 105, 105'), a curved driving pawl (20), and a leg spring (41) which serves as the sole spring element for biasing the locking pawls.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.