The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 14, 2017
Filed:
Oct. 09, 2006
Ian David Coles, West Sussex, GB;
Graham Frank Barnes, Surrey, GB;
Paul Anthony Goater, West Sussex, GB;
Matthew John Wilson, Northamptonshire, GB;
Roger Frank Duckworth, Northants, GB;
Ian David Coles, West Sussex, GB;
Graham Frank Barnes, Surrey, GB;
Paul Anthony Goater, West Sussex, GB;
Matthew John Wilson, Northamptonshire, GB;
Roger Frank Duckworth, Northants, GB;
CONSTRUCTION TOOLS PC AB, Kalmar, SE;
Abstract
An apparatus for tying a wire () around one or more objects such as concrete reinforcing bars () is disclosed. It comprises means for passing the wire () in a loop around the bars and a rotatable headfor twisting the ends of the loop together. The head () has at least one gripping means such as a variable force clutch () 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.