Nut and bolt arrangement, has nut mounted in casing via bearings and connected to wrap spring brakes

摘要

The nut (D) is rotatably mounted in a nut casing (E) via two bearings (F1, F2) and two wrap spring brakes (H1, H2) are secured to the nut to provide braking in both the clockwise and anti-clockwise directions. The bolt (C) is supported by two bearings (G1, G2). Rotating the bolt causes the nut to rotate in the same direction due to frictional contact.