Patent ID: 7793561

Claim:
A threaded nut device for a linear drive provided with a rotatable spindle, the threaded nut device comprising: a main nut having an internal thread for engagement on the external thread of the rotatable spindle, said main nut for performing a translatory displacing motion during a rotary motion of the spindle; and a safety nut having an internal thread for not engaging the external thread of the spindle during the normal operation of the linear drive and for meshing with the external thread of the spindle in case of failure of said main nut, said main nut having a first part and a second part, said first part and said second part being located at spaced locations from one another, said first part being provided with a threaded section of said main nut internal thread and said second part being provided with a threaded section of said main nut internal thread, said safety nut being arranged between said first part threaded section and said second part threaded section.