Crane Electronics, Inc.

Nicoventures Trading Limited

Daniel Thomas Ahearn

Hendrik Johan Dees

Simon Jelley

Finbarr Charles Ronald Williamson

Peter William Everitt

Neil Andrew McDonald

Adrian James Duffin

Himang Virendra Sharma

Hripsime Gasparyan

Matthew Maurice Homburg

Simon Philip Jelley

Myrto Dimoula

Neil Andrew Mcdonald

An electronic click wrench comprises a handle for applying torque through a shaft to a working head. The shaft includes torque sensing means for calculating the torque applied to a workpiece by the working head, and a trigger mechanism for sending a haptic feedback to a user by triggering a small movement of the handle relative to the working head when a set point torque is reached. The trigger mechanism comprises a permanent magnet that is normally anchored by magnetic attraction to a pole piece so as to resist separation when a force is applied through the handle, and an electromagnetic means actuable to reduce or cancel that magnetic attraction so as to permit separation of the pole piece and permanent magnet, thus generating the haptic feedback. Operation of the electromagnet may oppose the flux of the permanent magnet through the pole piece. Alternatively operation of the electromagnet may divert the flux of the permanent magnet away from the pole piece.

Electronic click wrench

Growing community of inventors

Cambridge, United Kingdom

Daniel Thomas Ahearn