Object binding
US10240355B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2017 |
| Grant date | Mar 26, 2019 |
| Priority date | — |
| Expiry date | Feb 2, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04G21/122
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus for tying a wire 46; 52 around one or more objects such as concrete reinforcing bars 2 is disclosed. It comprises means for passing the wire 46; 52 in a loop around the bars and a rotatable head 4 for twisting the ends of the loop together. The head 4 has at least one gripping means such as a variable force clutch 32 for gripping the wire, the gripping means being adapted to provide a variable gripping force so as to apply a predetermined tension to the wire during at least a first phase of twisting.Also disclosed is pre-feeding the wire between tying operations; conditioning the surface of the wire; and using the electrical conductivity of the reinforcing bars to verify that the bars are present before tying.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.