Patent ID: 7669816
Filing Date: 2010-03-02
Classification: F16M,G01C

Abstract:
1. A torque limiting rotary driver mechanism comprising a hand grip, a screw, and a torque limiter including a clutch interconnecting the hand grip and the screw, the clutch having a first clutch element operatively connected to the screw for conjoint rotation therewith and a second clutch element mounting the hand grip and supported by the first clutch element for axial translation relative to the first clutch element between a drive position in which the first and second clutch elements are interlocked for conjoint rotation and a non-drive position in which the second clutch element is rotatable relative to the first clutch element, the torque limiting rotary driver mechanism in combination with a geomatics support and a clamp for attaching items to the geomatics support, the clamp being moveable between a secured position wherein the clamp is secured to the geomatics support and an unsecured position wherein the clamp can be moved relative to the geomatics support, the driver mechanism moving said clamp between said secured position and unsecured position and the torque limiter allowing for the driver to be operable up to a threshold torque and rendering the driver inoperable over said threshold torque, the threshold torque being selected to inhibit overtightening of the clamp against the geomatics support to an extent causing deformation of the geomatics support.